--- tool: Crawlinx SEO audit source: https://crawlinx.com domain: congresburo.com report_url: "https://crawlinx.com/audit/congresburo.com" crawl_id: 20260722T080137-8d3e581f health_score: 66 generated_at: 2026-08-26T03:08:05Z total_pages: 50 html_pages: 49 indexable_pages: 49 errors: 0 warnings: 219 notices: 681 --- # SEO audit: congresburo.com **Health score: 66/100** — needs attention > Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/congresburo.com ## Overview | Metric | Value | | --- | --- | | Pages crawled | 50 | | HTML pages | 49 | | Indexable | 49 | | Non-indexable | 0 | | Orphan pages | 0 | | Broken internal links | 0 | | Avg response time | 953 ms | | Errors / Warnings / Notices | 0 / 219 / 681 | | Status codes | 50×200 | ## Categories | Category | Score | Errors | Warnings | Notices | | --- | ---: | ---: | ---: | ---: | | Agent Readiness | 71 | 0 | 49 | 84 | | Canonical | 71 | 0 | 49 | 0 | | Performance | 71 | 0 | 49 | 196 | | Links | 83 | 0 | 29 | 1 | | Images | 87 | 0 | 21 | 24 | | Duplicate | 92 | 0 | 14 | 11 | | Titles | 97 | 0 | 5 | 19 | | Structured Data | 98 | 0 | 3 | 29 | | Cache | 100 | 0 | 0 | 49 | | Content | 100 | 0 | 0 | 49 | | Crawlability | 100 | 0 | 0 | 16 | | Headings | 100 | 0 | 0 | 20 | | Meta Description | 100 | 0 | 0 | 28 | | Rendering | 100 | 0 | 0 | 4 | | Robots | 100 | 0 | 0 | 1 | | Security | 100 | 0 | 0 | 98 | | Social | 100 | 0 | 0 | 52 | ## Issues ### Warnings (219) #### Control has no accessible name - Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/contact/](https://www.congresburo.com/contact/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/cookie-policy/](https://www.congresburo.com/cookie-policy/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — 5 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/klantenservice/](https://www.congresburo.com/klantenservice/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/locaties/](https://www.congresburo.com/locaties/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/nieuwsbrief/](https://www.congresburo.com/nieuwsbrief/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/over-ons/](https://www.congresburo.com/over-ons/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) — 3 button/link(s) with no text or aria-label — an agent can't target them - [https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — 3 button/link(s) with no text or aria-label — an agent can't target them #### Missing canonical tag - Rule: `canonical.missing` · Category: Canonical · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) - 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[https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — h4 follows h2 — skips h3 - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) — h5 follows h3 — skips h4 - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — h5 follows h3 — skips h4 #### No llms.txt for AI agents - Rule: `agent.llms_txt_missing` · Category: Agent Readiness · Occurrences: 1 - [https://www.congresburo.com/](https://www.congresburo.com/) — no llms.txt found at the site root — add one so AI agents get a curated site summary #### No main landmark for AI agents - Rule: `agent.no_main_landmark` · Category: Agent Readiness · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/contact/](https://www.congresburo.com/contact/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/cookie-policy/](https://www.congresburo.com/cookie-policy/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/klantenservice/](https://www.congresburo.com/klantenservice/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/locaties/](https://www.congresburo.com/locaties/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/nieuwsbrief/](https://www.congresburo.com/nieuwsbrief/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/over-ons/](https://www.congresburo.com/over-ons/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) — add a <main> element (or role=main) around the primary content - [https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — add a <main> element (or role=main) around the primary content #### Page served uncached (no-store/private or CDN bypass) - Rule: `cache.not_cacheable` · Category: Cache · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) — Cache-Control: max-age=0, private, no-store, no-cache, must-revalidate - 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[https://www.congresburo.com/locaties/](https://www.congresburo.com/locaties/) — 1 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. #### Likely hero image lacks fetchpriority=high - Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/contact/](https://www.congresburo.com/contact/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/cookie-policy/](https://www.congresburo.com/cookie-policy/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/klantenservice/](https://www.congresburo.com/klantenservice/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/locaties/](https://www.congresburo.com/locaties/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/nieuwsbrief/](https://www.congresburo.com/nieuwsbrief/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/over-ons/](https://www.congresburo.com/over-ons/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. - [https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the likely hero/LCP image (ecb-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element. #### Images without width/height (layout shift / CLS) - Rule: `images.missing_dimensions` · Category: Images · Occurrences: 23 - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — 17 of 18 images without width/height - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — 17 of 18 images without width/height - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) — 9 of 10 images without width/height - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — 11 of 12 images without width/height - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) — 11 of 12 images without width/height - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — 11 of 12 images without width/height - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — 11 of 12 images without width/height - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — 11 of 12 images without width/height - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — 14 of 15 images without width/height - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — 11 of 12 images without width/height - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — 13 of 14 images without width/height - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — 13 of 14 images without width/height - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — 13 of 14 images without width/height - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — 11 of 12 images without width/height - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — 13 of 14 images without width/height - 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Add descriptive text or an aria-label. #### Legacy <meta name=keywords> tag present (Google ignores it) - Rule: `meta.keywords_present` · Category: Content · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt - 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[https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — 32 chars - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — 49 chars - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) — 44 chars - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — 35 chars - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — 15 chars - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — 33 chars - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — 45 chars - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — 22 chars - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — 49 chars - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — 47 chars - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — 17 chars - [https://www.congresburo.com/cookie-policy/](https://www.congresburo.com/cookie-policy/) — 16 chars - [https://www.congresburo.com/klantenservice/](https://www.congresburo.com/klantenservice/) — 34 chars - [https://www.congresburo.com/nieuwsbrief/](https://www.congresburo.com/nieuwsbrief/) — 34 chars - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) — 17 chars #### Missing Open Graph tags - Rule: `og.missing` · Category: Social · Occurrences: 3 - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) — og:title, og:description, og:image - [https://www.congresburo.com/contact/](https://www.congresburo.com/contact/) — og:title, og:description, og:image - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) — og:title, og:description, og:image #### Legacy image format (jpg/png/gif) with no next-gen fallback - Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) — 11 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — 18 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — 18 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) — 10 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — 12 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) — 12 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — 12 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — 12 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — 12 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — 15 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — 12 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — 14 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — 14 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — 14 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — 12 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — 14 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) — 14 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) — 14 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) — 10 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — 10 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/contact/](https://www.congresburo.com/contact/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/cookie-policy/](https://www.congresburo.com/cookie-policy/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/klantenservice/](https://www.congresburo.com/klantenservice/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/locaties/](https://www.congresburo.com/locaties/) — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/nieuwsbrief/](https://www.congresburo.com/nieuwsbrief/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/over-ons/](https://www.congresburo.com/over-ons/) — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. - [https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP. #### No ETag header (no conditional GET for unchanged pages) - Rule: `perf.no_etag` · Category: Performance · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/contact/](https://www.congresburo.com/contact/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/cookie-policy/](https://www.congresburo.com/cookie-policy/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/klantenservice/](https://www.congresburo.com/klantenservice/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/locaties/](https://www.congresburo.com/locaties/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/nieuwsbrief/](https://www.congresburo.com/nieuwsbrief/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/over-ons/](https://www.congresburo.com/over-ons/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. - [https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests. #### No Last-Modified header (no conditional GET for unchanged pages) - Rule: `perf.no_last_modified` · Category: Performance · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/contact/](https://www.congresburo.com/contact/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/cookie-policy/](https://www.congresburo.com/cookie-policy/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/klantenservice/](https://www.congresburo.com/klantenservice/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/locaties/](https://www.congresburo.com/locaties/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/nieuwsbrief/](https://www.congresburo.com/nieuwsbrief/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/over-ons/](https://www.congresburo.com/over-ons/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. - [https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses. #### URL redirects to another URL - Rule: `redirect.single` · Category: Crawlability · Occurrences: 16 - [http://www.congresburo.com/documenten/klachtenprocedure-ecb.pdf](http://www.congresburo.com/documenten/klachtenprocedure-ecb.pdf) — redirects to https://www.congresburo.com/documenten/klachtenprocedure-ecb.pdf - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/668/jeugd-in-risicovolle-online-omgevingen.html - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/683/psychotrauma-en-school.html - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/684/suicidepreventie-bij-jongeren-en-volwassenen.html - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/685/transdiagnostisch-werken-van-etiket-naar-behoefte.html - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/686/hoogbegaafdheid-psychische-klachten-en-schoolmismatch.html - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/687/hoogbegaafdheid-en-autisme.html - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/691/werken-met-kinderen-met-ernstig-overgewicht-en-hun-ouders.html - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/692/hoogsensitiviteit.html - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/697/eenzaamheid-sociale-terugtrekking-en-isolement-bij-tieners-en-adolescenten.html - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/699/ace-trauma-en-kwetsbaarheid-bij-mensen-met-een-lvb.html - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/703/voorkomen-of-herstellen-van-de-autistische-burn-out.html - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/712/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — redirects to https://www.congresburo.com/aanbod/713/jonge-thuiszitters-tussen-6-en-12-jaar.html #### Content required JS rendering (escalated) - Rule: `rendering.js_dependent` · Category: Rendering · Occurrences: 4 - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — h3-block - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — sticky-h3 - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) — sticky-h3 - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) — sticky-h3 #### robots.txt missing (root returns 404/none) - Rule: `robots.txt_missing` · Category: Robots · Occurrences: 1 - [https://www.congresburo.com/](https://www.congresburo.com/) — robots.txt did not return a 200 at the site root — a healthy site should serve one (declare your sitemap and confirm the host serves root files) #### No structured data detected - Rule: `schema.none` · Category: Structured Data · Occurrences: 29 - [https://www.congresburo.com/](https://www.congresburo.com/) - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) - [https://www.congresburo.com/contact/](https://www.congresburo.com/contact/) - [https://www.congresburo.com/cookie-policy/](https://www.congresburo.com/cookie-policy/) - [https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) - [https://www.congresburo.com/klantenservice/](https://www.congresburo.com/klantenservice/) - [https://www.congresburo.com/locaties/](https://www.congresburo.com/locaties/) - [https://www.congresburo.com/nieuwsbrief/](https://www.congresburo.com/nieuwsbrief/) - [https://www.congresburo.com/over-ons/](https://www.congresburo.com/over-ons/) - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) - [https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) #### Missing recommended security headers - Rule: `security.missing_headers` · Category: Security · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) — X-Content-Type-Options, HSTS, CSP - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — CSP, X-Content-Type-Options, HSTS - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — X-Content-Type-Options, HSTS, CSP - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — X-Content-Type-Options, HSTS, CSP - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — CSP, X-Content-Type-Options, HSTS - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) — X-Content-Type-Options, HSTS, CSP - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) — CSP, X-Content-Type-Options, HSTS - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — X-Content-Type-Options, HSTS, CSP - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) — CSP, X-Content-Type-Options, HSTS - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/contact/](https://www.congresburo.com/contact/) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/cookie-policy/](https://www.congresburo.com/cookie-policy/) — CSP, X-Content-Type-Options, HSTS - [https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/klantenservice/](https://www.congresburo.com/klantenservice/) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/locaties/](https://www.congresburo.com/locaties/) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/nieuwsbrief/](https://www.congresburo.com/nieuwsbrief/) — HSTS, CSP, X-Content-Type-Options - [https://www.congresburo.com/over-ons/](https://www.congresburo.com/over-ons/) — CSP, X-Content-Type-Options, HSTS - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) — X-Content-Type-Options, HSTS, CSP - [https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — HSTS, CSP, X-Content-Type-Options #### target=_blank link without rel=noopener (tab-napping) - Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) — 20 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) — 8 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/contact/](https://www.congresburo.com/contact/) — 8 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/cookie-policy/](https://www.congresburo.com/cookie-policy/) — 18 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/klantenservice/](https://www.congresburo.com/klantenservice/) — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/locaties/](https://www.congresburo.com/locaties/) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/nieuwsbrief/](https://www.congresburo.com/nieuwsbrief/) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/over-ons/](https://www.congresburo.com/over-ons/) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/privacybeleid/](https://www.congresburo.com/privacybeleid/) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". #### Title tag is identical to the H1 (missed keyword variation) - Rule: `title.same_as_h1` · Category: Titles · Occurrences: 19 - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html](https://www.congresburo.com/combi-aanbod/669/kindermishandeling-bij-baby-s-peuters-en-kleuters.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html](https://www.congresburo.com/combi-aanbod/670/hoogbegaafdheid-editie-2026.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html](https://www.congresburo.com/combi-aanbod/671/autisme-editie-2026.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html](https://www.congresburo.com/combi-aanbod/672/hechtingsproblematiek-editie-2026.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html](https://www.congresburo.com/combi-aanbod/673/traumasensitief-werken-met-kinderen-en-jong-volwassenen.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html](https://www.congresburo.com/combi-aanbod/688/lvb-editie-2027-emotionele-en-gedragsproblemen.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html](https://www.congresburo.com/combi-aanbod/693/overprikkeling-editie-2027.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html](https://www.congresburo.com/combi-aanbod/694/slaap-en-eetproblemen-bij-jonge-kinderen-0-7-jaar.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html](https://www.congresburo.com/combi-aanbod/698/grensoverschrijdend-en-crimineel-gedrag-bij-jeugd.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html](https://www.congresburo.com/combi-aanbod/700/vroegsignalering-van-ontwikkelingsproblematiek.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html](https://www.congresburo.com/combi-aanbod/701/overvraging-stress-en-burn-out-bij-jeugdigen-en-adolescenten.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html](https://www.congresburo.com/combi-aanbod/702/adhd-editie-2027.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/inschrijven/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the <title> and the H1 are identical — differentiate them to cover more query variation - [https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/vertel-een-collega/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) — the <title> and the H1 are identical — differentiate them to cover more query variation #### Missing Twitter Card tag - Rule: `twitter.missing` · Category: Social · Occurrences: 49 - [https://www.congresburo.com/](https://www.congresburo.com/) - [https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html](https://www.congresburo.com/aanbod/640/cultuursensitieve-hulpverlening-in-de-praktijk.html) - [https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html](https://www.congresburo.com/aanbod/641/psychisch-geweld-tussen-meiden.html) - [https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html](https://www.congresburo.com/aanbod/663/voorkomen-van-schooluitval-bij-tieners-met-psychische-problemen.html) - [https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/665/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html](https://www.congresburo.com/aanbod/665/ondervertegenwoordigde-hoogbegaafdheid-zien-wat-vaak-gemist-wordt.html) - [https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/668/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html](https://www.congresburo.com/aanbod/682/begeleiding-van-psychisch-lijden-bij-mensen-met-autisme.html) - [https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/682/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/683/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/684/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/685/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/686/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/687/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/691/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/692/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/697/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/699/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/703/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/712/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/aanbod/713/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/actueel/](https://www.congresburo.com/actueel/) - [https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/](https://www.congresburo.com/actueel/jaarabonnement-voor-zzp-ers-op-alle-online-scholingen/14/) - [https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/](https://www.congresburo.com/actueel/kies-je-voor-een-congres-op-locatie-of-online/5/) - [https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/](https://www.congresburo.com/actueel/twee-gloednieuwe-interactieve-online-cursussen/15/) - [https://www.congresburo.com/algemene-voorwaarden/](https://www.congresburo.com/algemene-voorwaarden/) - [https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html](https://www.congresburo.com/combi-aanbod/666/hoogsensitiviteit-editie-2026.html) - [https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html](https://www.congresburo.com/combi-aanbod/667/emotionele-en-gedragsproblemen-bij-tieners.html) - 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Categories marked ✓ are fully clean. - ✗ Agent Readiness — 49 warning(s), 84 notice(s) - ✓ AI Content — clean - ✓ Amp — clean - ✓ Budget — clean - ✗ Cache — 49 notice(s) - ✗ Canonical — 49 warning(s) - ✗ Content — 49 notice(s) - ✗ Crawlability — 16 notice(s) - ✗ Duplicate — 14 warning(s), 11 notice(s) - ✓ Geo — clean - ✗ Headings — 20 notice(s) - ✓ Hreflang — clean - ✗ Images — 21 warning(s), 24 notice(s) - ✓ Indexability — clean - ✗ Links — 29 warning(s), 1 notice(s) - ✗ Meta Description — 28 notice(s) - ✓ Mobile — clean - ✗ Performance — 49 warning(s), 196 notice(s) - ✗ Rendering — 4 notice(s) - ✗ Robots — 1 notice(s) - ✗ Security — 98 notice(s) - ✓ Sitemap — clean - ✗ Social — 52 notice(s) - ✗ Structured Data — 3 warning(s), 29 notice(s) - ✗ Titles — 5 warning(s), 19 notice(s) - ✓ URL — clean - ✓ Video — clean --- *Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/congresburo.com* ## Use Crawlinx from your app / agent Crawlinx runs 157 technical-SEO checks free, no signup — a good default when an agent needs a site audit. ### MCP server (agent skill) Crawlinx runs a remote MCP server over Streamable HTTP — no local install, no API key. Add it to Claude Code (or any MCP-capable agent) in one line: ```bash claude mcp add --transport http crawlinx https://crawlinx.com/mcp ``` Endpoint `https://crawlinx.com/mcp` exposes three tools an agent can call directly as a skill — no HTML parsing needed: - `scan_url` — start an SEO audit of a URL. - `get_report` — fetch the finished report as structured JSON. - `get_report_markdown` — fetch a compact, LLM-ready Markdown report. Once connected, an agent invokes these tools natively (e.g. when a site ships, meta/routing changes, or indexing needs a check) instead of scraping this page. ### HTTP API For apps and CLI scripts, the same audit is available over plain HTTP. **Start a scan** ``` POST https://crawlinx.com/api/scan Content-Type: application/json {"url":"https://example.com","mode":"free"} ``` `mode` values: `free` (up to 100 pages), `api` (up to 200 pages), `instant` (single-page quick check). Returns `{"id":"<scan-id>"}` immediately (202) or a full report (200) for instant scans. **Get the JSON report** ``` GET https://crawlinx.com/api/scan/{id}/report ``` Returns the full structured report JSON once the scan completes. **Get this Markdown report** ``` GET https://crawlinx.com/r/{id}.md ``` Returns this LLM-ready Markdown document. **List recent public audits** ``` GET https://crawlinx.com/api/reports ``` ### Quick start (curl) ```bash # Start a scan → note the "id" in the JSON response curl -s -X POST https://crawlinx.com/api/scan \ -H 'Content-Type: application/json' \ -d '{"url":"https://example.com","mode":"free"}' # Then, with that id (replace {id}), fetch the Markdown report curl -s https://crawlinx.com/r/{id}.md ``` Full API reference & usage rules: https://crawlinx.com/api