SEO audit for onkowissen.tv
Onkowissen TV: www.onkowissen.tv
Health 59/100 (fair) · 50 pages crawled · generated 2026-08-26
Download Markdown report (feed to ChatGPT / Claude / Cursor)
| Category | Score | Errors | Warnings | Notices |
|---|---|---|---|---|
| Crawlability | 92 | 4 | 0 | 0 |
| Links | 92 | 4 | 0 | 45 |
| Agent Readiness | 46 | 0 | 90 | 46 |
| Images | 73 | 0 | 45 | 45 |
| Meta Description | 73 | 0 | 45 | 0 |
| Performance | 73 | 0 | 45 | 200 |
| Duplicate | 96 | 0 | 6 | 0 |
| Indexability | 98 | 0 | 4 | 0 |
| URL | 99 | 0 | 1 | 2 |
| Canonical | 100 | 0 | 0 | 1 |
| Content | 100 | 0 | 0 | 32 |
| Mobile | 100 | 0 | 0 | 45 |
| Robots | 100 | 0 | 0 | 1 |
| Security | 100 | 0 | 0 | 94 |
| Social | 100 | 0 | 0 | 45 |
| Structured Data | 100 | 0 | 0 | 45 |
Errors (2 rules)
error Broken internal link (target 4xx/5xx)
Rule links.broken_internal · Links · 4 occurrence(s)
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — https://www.onkowissen.tv/asco-2021/ (HTTP 404)
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — https://www.onkowissen.tv/en/esmo-2021/ (HTTP 404)
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — https://www.onkowissen.tv/sabcs-2020/ (HTTP 404)
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — https://www.onkowissen.tv/sabcs-2021/ (HTTP 404)
error Client error (4xx) response
Rule status.4xx · Crawlability · 4 occurrence(s)
- https://www.onkowissen.tv/asco-2021/ — HTTP 404
- https://www.onkowissen.tv/en/esmo-2021/ — HTTP 404
- https://www.onkowissen.tv/sabcs-2020/ — HTTP 404
- https://www.onkowissen.tv/sabcs-2021/ — HTTP 404
Warnings (8 rules)
warning Control has no accessible name
Rule agent.control_no_name · Agent Readiness · 45 occurrence(s)
- https://www.onkowissen.tv/ — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — 21 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/archiv/archiv-2022 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/archiv/archiv-2023 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/archiv/archiv-2024 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/archiv/archiv-2025 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/abc-8-consensus — 7 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/asco-2025 — 20 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/asco-2026 — 16 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — 11 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/ash-2025 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025 — 6 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/eha-2025 — 8 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/eha-2026 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/esgo-2026 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/esmo-2025 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/rb-hematology-2026 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/sabcs-2025 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026 — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/datenschutzerklaerung — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/educationals — 6 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/footer-menu/kontakt — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/livestream — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/unsere-experten — 5 button/link(s) with no text or aria-label — an agent can't target them
- https://www.onkowissen.tv/unsere-sponsoren — 5 button/link(s) with no text or aria-label — an agent can't target them
warning Dialog has no accessible name
Rule agent.dialog_no_name · Agent Readiness · 45 occurrence(s)
- https://www.onkowissen.tv/ — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/archiv/archiv-2022 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/archiv/archiv-2023 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/archiv/archiv-2024 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/archiv/archiv-2025 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/abc-8-consensus — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/asco-2025 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/asco-2026 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/ash-2025 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/eha-2025 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/eha-2026 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/esgo-2026 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/esmo-2025 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/rb-hematology-2026 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/sabcs-2025 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026 — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/datenschutzerklaerung — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/educationals — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/footer-menu/kontakt — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/livestream — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/unsere-experten — 1 dialog(s) without aria-label / aria-labelledby
- https://www.onkowissen.tv/unsere-sponsoren — 1 dialog(s) without aria-label / aria-labelledby
warning Near-duplicate page content
Rule duplicate.near · Duplicate · 6 occurrence(s)
- https://www.onkowissen.tv/archiv/archiv-2018 — near-duplicate of 3 page(s): https://www.onkowissen.tv/unsere-sponsoren, https://www.onkowissen.tv/footer-menu/kontakt, https://www.onkowissen.tv/beitraege/rb-hematology-2026
- https://www.onkowissen.tv/archiv/archiv-2019 — near-duplicate of 1 page(s): https://www.onkowissen.tv/archiv/archiv-2023
- https://www.onkowissen.tv/archiv/archiv-2023 — near-duplicate of 1 page(s): https://www.onkowissen.tv/archiv/archiv-2019
- https://www.onkowissen.tv/beitraege/rb-hematology-2026 — near-duplicate of 3 page(s): https://www.onkowissen.tv/unsere-sponsoren, https://www.onkowissen.tv/footer-menu/kontakt, https://www.onkowissen.tv/archiv/archiv-2018
- https://www.onkowissen.tv/footer-menu/kontakt — near-duplicate of 3 page(s): https://www.onkowissen.tv/unsere-sponsoren, https://www.onkowissen.tv/beitraege/rb-hematology-2026, https://www.onkowissen.tv/archiv/archiv-2018
- https://www.onkowissen.tv/unsere-sponsoren — near-duplicate of 3 page(s): https://www.onkowissen.tv/footer-menu/kontakt, https://www.onkowissen.tv/beitraege/rb-hematology-2026, https://www.onkowissen.tv/archiv/archiv-2018
warning Images missing alt text
Rule images.missing_alt · Images · 45 occurrence(s)
- https://www.onkowissen.tv/ — 4 of 85 images missing alt
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — 271 of 292 images missing alt
- https://www.onkowissen.tv/archiv/archiv-2022 — 4 of 18 images missing alt
- https://www.onkowissen.tv/archiv/archiv-2023 — 4 of 19 images missing alt
- https://www.onkowissen.tv/archiv/archiv-2024 — 4 of 18 images missing alt
- https://www.onkowissen.tv/archiv/archiv-2025 — 4 of 20 images missing alt
- https://www.onkowissen.tv/beitraege/abc-8-consensus — 37 of 44 images missing alt
- https://www.onkowissen.tv/beitraege/asco-2025 — 1084 of 1104 images missing alt
- https://www.onkowissen.tv/beitraege/asco-2026 — 1047 of 1064 images missing alt
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — 183 of 194 images missing alt
- https://www.onkowissen.tv/beitraege/ash-2025 — 287 of 297 images missing alt
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025 — 83 of 89 images missing alt
- https://www.onkowissen.tv/beitraege/eha-2025 — 235 of 243 images missing alt
- https://www.onkowissen.tv/beitraege/eha-2026 — 209 of 216 images missing alt
- https://www.onkowissen.tv/beitraege/esgo-2026 — 79 of 86 images missing alt
- https://www.onkowissen.tv/beitraege/esmo-2025 — 1146 of 1170 images missing alt
- https://www.onkowissen.tv/beitraege/rb-hematology-2026 — 3 of 8 images missing alt
- https://www.onkowissen.tv/beitraege/sabcs-2025 — 363 of 378 images missing alt
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026 — 41 of 46 images missing alt
- https://www.onkowissen.tv/datenschutzerklaerung — 3 of 8 images missing alt
- https://www.onkowissen.tv/educationals — 9 of 14 images missing alt
- https://www.onkowissen.tv/footer-menu/kontakt — 3 of 8 images missing alt
- https://www.onkowissen.tv/livestream — 3 of 23 images missing alt
- https://www.onkowissen.tv/unsere-experten — 4 of 173 images missing alt
- https://www.onkowissen.tv/unsere-sponsoren — 4 of 34 images missing alt
warning Page is noindex
Rule index.noindex · Indexability · 4 occurrence(s)
- https://www.onkowissen.tv/asco-2021/ — meta/X-Robots: meta=noindex, follow
- https://www.onkowissen.tv/en/esmo-2021/ — meta/X-Robots: meta=noindex, follow
- https://www.onkowissen.tv/sabcs-2020/ — meta/X-Robots: meta=noindex, follow
- https://www.onkowissen.tv/sabcs-2021/ — meta/X-Robots: meta=noindex, follow
warning Missing meta description
Rule meta_desc.missing · Meta Description · 45 occurrence(s)
- https://www.onkowissen.tv/
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021
- https://www.onkowissen.tv/archiv/archiv-2022
- https://www.onkowissen.tv/archiv/archiv-2023
- https://www.onkowissen.tv/archiv/archiv-2024
- https://www.onkowissen.tv/archiv/archiv-2025
- https://www.onkowissen.tv/beitraege/abc-8-consensus
- https://www.onkowissen.tv/beitraege/asco-2025
- https://www.onkowissen.tv/beitraege/asco-2026
- https://www.onkowissen.tv/beitraege/asco-gu-2026
- https://www.onkowissen.tv/beitraege/ash-2025
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025
- https://www.onkowissen.tv/beitraege/eha-2025
- https://www.onkowissen.tv/beitraege/eha-2026
- https://www.onkowissen.tv/beitraege/esgo-2026
- https://www.onkowissen.tv/beitraege/esmo-2025
- https://www.onkowissen.tv/beitraege/rb-hematology-2026
- https://www.onkowissen.tv/beitraege/sabcs-2025
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026
- https://www.onkowissen.tv/datenschutzerklaerung
- https://www.onkowissen.tv/educationals
- https://www.onkowissen.tv/footer-menu/kontakt
- https://www.onkowissen.tv/livestream
- https://www.onkowissen.tv/unsere-experten
- https://www.onkowissen.tv/unsere-sponsoren
warning Render-blocking script in <head> (no defer/async)
Rule perf.render_blocking · Performance · 45 occurrence(s)
- https://www.onkowissen.tv/ — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/archiv/archiv-2022 — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/archiv/archiv-2023 — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/archiv/archiv-2024 — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/archiv/archiv-2025 — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/abc-8-consensus — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/asco-2025 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/asco-2026 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/ash-2025 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/eha-2025 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/eha-2026 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/esgo-2026 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/esmo-2025 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/rb-hematology-2026 — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/sabcs-2025 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026 — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/datenschutzerklaerung — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/educationals — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/footer-menu/kontakt — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/livestream — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/unsere-experten — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.onkowissen.tv/unsere-sponsoren — 1 render-blocking <script> in <head> (add defer/async or use type=module)
warning Double slash in URL path (duplicate-content risk)
Rule url.double_slash · URL · 1 occurrence(s)
Notices (19 rules)
notice Heading levels skip a level
Rule agent.heading_skip · Agent Readiness · 45 occurrence(s)
- https://www.onkowissen.tv/ — h4 follows h2 — skips h3
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/archiv/archiv-2022 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/archiv/archiv-2023 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/archiv/archiv-2024 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/archiv/archiv-2025 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/abc-8-consensus — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/asco-2025 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/asco-2026 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/ash-2025 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/eha-2025 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/eha-2026 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/esgo-2026 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/esmo-2025 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/rb-hematology-2026 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/sabcs-2025 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026 — h4 follows h2 — skips h3
- https://www.onkowissen.tv/datenschutzerklaerung — h4 follows h2 — skips h3
- https://www.onkowissen.tv/educationals — h4 follows h2 — skips h3
- https://www.onkowissen.tv/footer-menu/kontakt — h4 follows h2 — skips h3
- https://www.onkowissen.tv/livestream — h4 follows h2 — skips h3
- https://www.onkowissen.tv/unsere-experten — h4 follows h2 — skips h3
- https://www.onkowissen.tv/unsere-sponsoren — h3 follows h1 — skips h2
notice No llms.txt for AI agents
Rule agent.llms_txt_missing · Agent Readiness · 1 occurrence(s)
- https://www.onkowissen.tv/ — no llms.txt found at the site root — add one so AI agents get a curated site summary
notice Canonical points to a different URL
Rule canonical.non_self · Canonical · 1 occurrence(s)
- https://www.onkowissen.tv/beitraege/eha-2026 — canonical=https://www.onkowissen.tv/beitraege/eha-2026?mtm_content=eha26_twitter_all&mtm_kwd=eha26_twitter_all&mtm_medium=paid_socialmedia&mtm_source=twitter&twclid=21j9fb57og5xd67xwhg11g4ns5&cHash=2581e253837a99a8fffa7ccd79f981b6
notice Main text is hard to read (low Flesch Reading Ease)
Rule content.readability_poor · Content · 32 occurrence(s)
- https://www.onkowissen.tv/ — this page reads as very difficult (Flesch Reading Ease 21, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/archiv/archiv-2018 — this page reads as very difficult (Flesch Reading Ease 11, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/archiv/archiv-2019 — this page reads as very difficult (Flesch Reading Ease 11, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/archiv/archiv-2020 — this page reads as very difficult (Flesch Reading Ease 12, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/archiv/archiv-2021 — this page reads as very difficult (Flesch Reading Ease 12, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/archiv/archiv-2022 — this page reads as very difficult (Flesch Reading Ease 12, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/archiv/archiv-2023 — this page reads as very difficult (Flesch Reading Ease 12, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/archiv/archiv-2024 — this page reads as very difficult (Flesch Reading Ease 11, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/archiv/archiv-2025 — this page reads as very difficult (Flesch Reading Ease 11, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/abc-8-consensus — this page reads as very difficult (Flesch Reading Ease 29, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/asco-2026 — this page reads as very difficult (Flesch Reading Ease 19, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — this page reads as difficult (Flesch Reading Ease 49, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/eau-2025 — this page reads as very difficult (Flesch Reading Ease 24, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025 — this page reads as difficult (Flesch Reading Ease 39, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/eha-2025 — this page reads as difficult (Flesch Reading Ease 48, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/eha-2026 — this page reads as difficult (Flesch Reading Ease 44, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/elcc-2025 — this page reads as difficult (Flesch Reading Ease 32, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/esgo-2026 — this page reads as difficult (Flesch Reading Ease 30, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/rb-hematology-2026 — this page reads as very difficult (Flesch Reading Ease 11, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026 — this page reads as very difficult (Flesch Reading Ease 10, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/datenschutzerklaerung — this page reads as very difficult (Flesch Reading Ease 28, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/educationals — this page reads as very difficult (Flesch Reading Ease 13, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/footer-menu/kontakt — this page reads as very difficult (Flesch Reading Ease 12, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/livestream — this page reads as very difficult (Flesch Reading Ease 17, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- https://www.onkowissen.tv/unsere-sponsoren — this page reads as very difficult (Flesch Reading Ease 10, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
notice Missing html lang attribute
Rule i18n.lang_missing · Mobile · 45 occurrence(s)
- https://www.onkowissen.tv/
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021
- https://www.onkowissen.tv/archiv/archiv-2022
- https://www.onkowissen.tv/archiv/archiv-2023
- https://www.onkowissen.tv/archiv/archiv-2024
- https://www.onkowissen.tv/archiv/archiv-2025
- https://www.onkowissen.tv/beitraege/abc-8-consensus
- https://www.onkowissen.tv/beitraege/asco-2025
- https://www.onkowissen.tv/beitraege/asco-2026
- https://www.onkowissen.tv/beitraege/asco-gu-2026
- https://www.onkowissen.tv/beitraege/ash-2025
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025
- https://www.onkowissen.tv/beitraege/eha-2025
- https://www.onkowissen.tv/beitraege/eha-2026
- https://www.onkowissen.tv/beitraege/esgo-2026
- https://www.onkowissen.tv/beitraege/esmo-2025
- https://www.onkowissen.tv/beitraege/rb-hematology-2026
- https://www.onkowissen.tv/beitraege/sabcs-2025
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026
- https://www.onkowissen.tv/datenschutzerklaerung
- https://www.onkowissen.tv/educationals
- https://www.onkowissen.tv/footer-menu/kontakt
- https://www.onkowissen.tv/livestream
- https://www.onkowissen.tv/unsere-experten
- https://www.onkowissen.tv/unsere-sponsoren
notice Likely hero image lacks fetchpriority=high
Rule images.hero_no_fetchpriority · Performance · 45 occurrence(s)
- https://www.onkowissen.tv/ — the likely hero/LCP image (play_button.svg) 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.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/archiv/archiv-2022 — the likely hero/LCP image (icon_archiv.svg) 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.onkowissen.tv/archiv/archiv-2023 — the likely hero/LCP image (icon_archiv.svg) 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.onkowissen.tv/archiv/archiv-2024 — the likely hero/LCP image (icon_archiv.svg) 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.onkowissen.tv/archiv/archiv-2025 — the likely hero/LCP image (icon_archiv.svg) 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.onkowissen.tv/beitraege/abc-8-consensus — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/asco-2025 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/asco-2026 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/asco-gu-2026 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/ash-2025 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/eau-2025/wclc-2025 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/eha-2025 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/eha-2026 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/esgo-2026 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/esmo-2025 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/rb-hematology-2026 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/sabcs-2025 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/beitraege/thoraxonkologie-2026 — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/datenschutzerklaerung — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/educationals — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/footer-menu/kontakt — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/livestream — the likely hero/LCP image (placeholder_.jpg) 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.onkowissen.tv/unsere-experten — the likely hero/LCP image (screenshot_2023-09-06_154107.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.onkowissen.tv/unsere-sponsoren — the likely hero/LCP image (screenshot_2023-09-06_154107.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.
notice Images without width/height (layout shift / CLS)
Rule images.missing_dimensions · Images · 45 occurrence(s)
- https://www.onkowissen.tv/ — 84 of 85 images without width/height
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — 275 of 292 images without width/height
- https://www.onkowissen.tv/archiv/archiv-2022 — 17 of 18 images without width/height
- https://www.onkowissen.tv/archiv/archiv-2023 — 18 of 19 images without width/height
- https://www.onkowissen.tv/archiv/archiv-2024 — 17 of 18 images without width/height
- https://www.onkowissen.tv/archiv/archiv-2025 — 19 of 20 images without width/height
- https://www.onkowissen.tv/beitraege/abc-8-consensus — 43 of 44 images without width/height
- https://www.onkowissen.tv/beitraege/asco-2025 — 1103 of 1104 images without width/height
- https://www.onkowissen.tv/beitraege/asco-2026 — 1063 of 1064 images without width/height
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — 193 of 194 images without width/height
- https://www.onkowissen.tv/beitraege/ash-2025 — 296 of 297 images without width/height
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025 — 88 of 89 images without width/height
- https://www.onkowissen.tv/beitraege/eha-2025 — 242 of 243 images without width/height
- https://www.onkowissen.tv/beitraege/eha-2026 — 215 of 216 images without width/height
- https://www.onkowissen.tv/beitraege/esgo-2026 — 85 of 86 images without width/height
- https://www.onkowissen.tv/beitraege/esmo-2025 — 1169 of 1170 images without width/height
- https://www.onkowissen.tv/beitraege/rb-hematology-2026 — 7 of 8 images without width/height
- https://www.onkowissen.tv/beitraege/sabcs-2025 — 377 of 378 images without width/height
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026 — 45 of 46 images without width/height
- https://www.onkowissen.tv/datenschutzerklaerung — 7 of 8 images without width/height
- https://www.onkowissen.tv/educationals — 13 of 14 images without width/height
- https://www.onkowissen.tv/footer-menu/kontakt — 7 of 8 images without width/height
- https://www.onkowissen.tv/livestream — 22 of 23 images without width/height
- https://www.onkowissen.tv/unsere-experten — 8 of 173 images without width/height
- https://www.onkowissen.tv/unsere-sponsoren — 33 of 34 images without width/height
notice Internal link has no anchor text / accessible name
Rule links.no_anchor_text · Links · 45 occurrence(s)
- https://www.onkowissen.tv/ — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/archiv/archiv-2022 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/archiv/archiv-2023 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/archiv/archiv-2024 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/archiv/archiv-2025 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/abc-8-consensus — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/asco-2025 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/asco-2026 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/ash-2025 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/eha-2025 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/eha-2026 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/esgo-2026 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/esmo-2025 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/rb-hematology-2026 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/sabcs-2025 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026 — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/datenschutzerklaerung — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/educationals — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/footer-menu/kontakt — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/livestream — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/unsere-experten — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.onkowissen.tv/unsere-sponsoren — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
notice Missing Open Graph tags
Rule og.missing · Social · 45 occurrence(s)
- https://www.onkowissen.tv/ — og:title, og:description, og:image
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — og:title, og:description, og:image
- https://www.onkowissen.tv/archiv/archiv-2022 — og:title, og:description, og:image
- https://www.onkowissen.tv/archiv/archiv-2023 — og:title, og:description, og:image
- https://www.onkowissen.tv/archiv/archiv-2024 — og:title, og:description, og:image
- https://www.onkowissen.tv/archiv/archiv-2025 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/abc-8-consensus — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/asco-2025 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/asco-2026 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/ash-2025 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/eha-2025 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/eha-2026 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/esgo-2026 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/esmo-2025 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/rb-hematology-2026 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/sabcs-2025 — og:title, og:description, og:image
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026 — og:title, og:description, og:image
- https://www.onkowissen.tv/datenschutzerklaerung — og:title, og:description, og:image
- https://www.onkowissen.tv/educationals — og:title, og:description, og:image
- https://www.onkowissen.tv/footer-menu/kontakt — og:title, og:description, og:image
- https://www.onkowissen.tv/livestream — og:title, og:description, og:image
- https://www.onkowissen.tv/unsere-experten — og:title, og:description, og:image
- https://www.onkowissen.tv/unsere-sponsoren — og:title, og:description, og:image
notice Large DOM (over 1500 elements) slows rendering & interaction
Rule perf.dom_size_large · Performance · 20 occurrence(s)
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — the page has 3536 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/asco-2024 — the page has 7587 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/asco-2025 — the page has 8170 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/asco-2026 — the page has 9241 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/asco-gu-2024 — the page has 2540 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/asco-gu-2025 — the page has 2427 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — the page has 2208 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/ash-2023 — the page has 2930 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/ash-2024 — the page has 3390 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/ash-2025 — the page has 3525 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/eha-2024 — the page has 2351 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/eha-2025 — the page has 2957 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/eha-2026 — the page has 2599 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/esmo-2024 — the page has 7677 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/esmo-2025 — the page has 8830 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/sabcs-2023 — the page has 2732 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/sabcs-2023/rb-asco-gi-2024 — the page has 1700 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/sabcs-2024 — the page has 2707 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/beitraege/sabcs-2025 — the page has 2899 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- https://www.onkowissen.tv/unsere-experten — the page has 2003 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
notice Legacy image format (jpg/png/gif) with no next-gen fallback
Rule perf.images_legacy_format · Performance · 45 occurrence(s)
- https://www.onkowissen.tv/ — 77 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.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — 288 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.onkowissen.tv/archiv/archiv-2022 — 13 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.onkowissen.tv/archiv/archiv-2023 — 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.onkowissen.tv/archiv/archiv-2024 — 13 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.onkowissen.tv/archiv/archiv-2025 — 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.onkowissen.tv/beitraege/abc-8-consensus — 40 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.onkowissen.tv/beitraege/asco-2025 — 743 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.onkowissen.tv/beitraege/asco-2026 — 728 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.onkowissen.tv/beitraege/asco-gu-2026 — 190 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.onkowissen.tv/beitraege/ash-2025 — 293 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.onkowissen.tv/beitraege/eau-2025/wclc-2025 — 85 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.onkowissen.tv/beitraege/eha-2025 — 239 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.onkowissen.tv/beitraege/eha-2026 — 212 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.onkowissen.tv/beitraege/esgo-2026 — 82 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.onkowissen.tv/beitraege/esmo-2025 — 785 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.onkowissen.tv/beitraege/rb-hematology-2026 — 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.onkowissen.tv/beitraege/sabcs-2025 — 254 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.onkowissen.tv/beitraege/thoraxonkologie-2026 — 42 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.onkowissen.tv/datenschutzerklaerung — 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.onkowissen.tv/educationals — 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.onkowissen.tv/footer-menu/kontakt — 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.onkowissen.tv/livestream — 16 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.onkowissen.tv/unsere-experten — 169 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.onkowissen.tv/unsere-sponsoren — 5 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.
notice No ETag header (no conditional GET for unchanged pages)
Rule perf.no_etag · Performance · 45 occurrence(s)
- https://www.onkowissen.tv/ — 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.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — 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.onkowissen.tv/archiv/archiv-2022 — 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.onkowissen.tv/archiv/archiv-2023 — 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.onkowissen.tv/archiv/archiv-2024 — 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.onkowissen.tv/archiv/archiv-2025 — 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.onkowissen.tv/beitraege/abc-8-consensus — 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.onkowissen.tv/beitraege/asco-2025 — 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.onkowissen.tv/beitraege/asco-2026 — 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.onkowissen.tv/beitraege/asco-gu-2026 — 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.onkowissen.tv/beitraege/ash-2025 — 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.onkowissen.tv/beitraege/eau-2025/wclc-2025 — 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.onkowissen.tv/beitraege/eha-2025 — 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.onkowissen.tv/beitraege/eha-2026 — 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.onkowissen.tv/beitraege/esgo-2026 — 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.onkowissen.tv/beitraege/esmo-2025 — 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.onkowissen.tv/beitraege/rb-hematology-2026 — 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.onkowissen.tv/beitraege/sabcs-2025 — 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.onkowissen.tv/beitraege/thoraxonkologie-2026 — 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.onkowissen.tv/datenschutzerklaerung — 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.onkowissen.tv/educationals — 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.onkowissen.tv/footer-menu/kontakt — 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.onkowissen.tv/livestream — 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.onkowissen.tv/unsere-experten — 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.onkowissen.tv/unsere-sponsoren — 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.
notice No Last-Modified header (no conditional GET for unchanged pages)
Rule perf.no_last_modified · Performance · 45 occurrence(s)
- https://www.onkowissen.tv/ — 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.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — 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.onkowissen.tv/archiv/archiv-2022 — 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.onkowissen.tv/archiv/archiv-2023 — 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.onkowissen.tv/archiv/archiv-2024 — 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.onkowissen.tv/archiv/archiv-2025 — 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.onkowissen.tv/beitraege/abc-8-consensus — 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.onkowissen.tv/beitraege/asco-2025 — 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.onkowissen.tv/beitraege/asco-2026 — 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.onkowissen.tv/beitraege/asco-gu-2026 — 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.onkowissen.tv/beitraege/ash-2025 — 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.onkowissen.tv/beitraege/eau-2025/wclc-2025 — 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.onkowissen.tv/beitraege/eha-2025 — 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.onkowissen.tv/beitraege/eha-2026 — 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.onkowissen.tv/beitraege/esgo-2026 — 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.onkowissen.tv/beitraege/esmo-2025 — 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.onkowissen.tv/beitraege/rb-hematology-2026 — 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.onkowissen.tv/beitraege/sabcs-2025 — 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.onkowissen.tv/beitraege/thoraxonkologie-2026 — 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.onkowissen.tv/datenschutzerklaerung — 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.onkowissen.tv/educationals — 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.onkowissen.tv/footer-menu/kontakt — 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.onkowissen.tv/livestream — 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.onkowissen.tv/unsere-experten — 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.onkowissen.tv/unsere-sponsoren — 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.
notice robots.txt missing (root returns 404/none)
Rule robots.txt_missing · Robots · 1 occurrence(s)
- https://www.onkowissen.tv/ — 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)
notice No structured data detected
Rule schema.none · Structured Data · 45 occurrence(s)
- https://www.onkowissen.tv/
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021
- https://www.onkowissen.tv/archiv/archiv-2022
- https://www.onkowissen.tv/archiv/archiv-2023
- https://www.onkowissen.tv/archiv/archiv-2024
- https://www.onkowissen.tv/archiv/archiv-2025
- https://www.onkowissen.tv/beitraege/abc-8-consensus
- https://www.onkowissen.tv/beitraege/asco-2025
- https://www.onkowissen.tv/beitraege/asco-2026
- https://www.onkowissen.tv/beitraege/asco-gu-2026
- https://www.onkowissen.tv/beitraege/ash-2025
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025
- https://www.onkowissen.tv/beitraege/eha-2025
- https://www.onkowissen.tv/beitraege/eha-2026
- https://www.onkowissen.tv/beitraege/esgo-2026
- https://www.onkowissen.tv/beitraege/esmo-2025
- https://www.onkowissen.tv/beitraege/rb-hematology-2026
- https://www.onkowissen.tv/beitraege/sabcs-2025
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026
- https://www.onkowissen.tv/datenschutzerklaerung
- https://www.onkowissen.tv/educationals
- https://www.onkowissen.tv/footer-menu/kontakt
- https://www.onkowissen.tv/livestream
- https://www.onkowissen.tv/unsere-experten
- https://www.onkowissen.tv/unsere-sponsoren
notice Missing recommended security headers
Rule security.missing_headers · Security · 49 occurrence(s)
- https://www.onkowissen.tv/ — CSP, HSTS
- https://www.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — HSTS, CSP
- https://www.onkowissen.tv/archiv/archiv-2025 — CSP, HSTS
- https://www.onkowissen.tv/asco-2021/ — CSP, HSTS
- https://www.onkowissen.tv/beitraege/abc-8-consensus — HSTS, CSP
- https://www.onkowissen.tv/beitraege/asco-2025 — HSTS, CSP
- https://www.onkowissen.tv/beitraege/asco-2026 — HSTS, CSP
- https://www.onkowissen.tv/beitraege/asco-gu-2026 — CSP, HSTS
- https://www.onkowissen.tv/beitraege/ash-2025 — HSTS, CSP
- https://www.onkowissen.tv/beitraege/eau-2025/wclc-2025 — HSTS, CSP
- https://www.onkowissen.tv/beitraege/eha-2025 — CSP, HSTS
- https://www.onkowissen.tv/beitraege/eha-2026 — HSTS, CSP
- https://www.onkowissen.tv/beitraege/esgo-2026 — HSTS, CSP
- https://www.onkowissen.tv/beitraege/esmo-2025 — HSTS, CSP
- https://www.onkowissen.tv/beitraege/sabcs-2025 — CSP, HSTS
- https://www.onkowissen.tv/beitraege/thoraxonkologie-2026 — HSTS, CSP
- https://www.onkowissen.tv/datenschutzerklaerung — HSTS, CSP
- https://www.onkowissen.tv/educationals — HSTS, CSP
- https://www.onkowissen.tv/en/esmo-2021/ — HSTS, CSP
- https://www.onkowissen.tv/footer-menu/kontakt — HSTS, CSP
- https://www.onkowissen.tv/livestream — HSTS, CSP
- https://www.onkowissen.tv/sabcs-2020/ — CSP, HSTS
- https://www.onkowissen.tv/sabcs-2021/ — HSTS, CSP
- https://www.onkowissen.tv/unsere-experten — HSTS, CSP
- https://www.onkowissen.tv/unsere-sponsoren — CSP, HSTS
notice target=_blank link without rel=noopener (tab-napping)
Rule security.unsafe_cross_origin_links · Security · 45 occurrence(s)
- https://www.onkowissen.tv/ — 17 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.onkowissen.tv/archiv/archiv-2021/year-in-review-2021 — 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.onkowissen.tv/archiv/archiv-2022 — 15 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.onkowissen.tv/archiv/archiv-2023 — 15 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.onkowissen.tv/archiv/archiv-2024 — 15 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.onkowissen.tv/archiv/archiv-2025 — 15 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.onkowissen.tv/beitraege/abc-8-consensus — 17 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.onkowissen.tv/beitraege/asco-2025 — 30 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.onkowissen.tv/beitraege/asco-2026 — 27 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.onkowissen.tv/beitraege/asco-gu-2026 — 21 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.onkowissen.tv/beitraege/ash-2025 — 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.onkowissen.tv/beitraege/eau-2025/wclc-2025 — 16 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.onkowissen.tv/beitraege/eha-2025 — 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.onkowissen.tv/beitraege/eha-2026 — 17 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.onkowissen.tv/beitraege/esgo-2026 — 17 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.onkowissen.tv/beitraege/esmo-2025 — 34 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.onkowissen.tv/beitraege/rb-hematology-2026 — 15 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.onkowissen.tv/beitraege/sabcs-2025 — 25 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.onkowissen.tv/beitraege/thoraxonkologie-2026 — 15 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.onkowissen.tv/datenschutzerklaerung — 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.onkowissen.tv/educationals — 15 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.onkowissen.tv/footer-menu/kontakt — 15 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.onkowissen.tv/livestream — 26 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.onkowissen.tv/unsere-experten — 15 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.onkowissen.tv/unsere-sponsoren — 15 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
notice Underscores in URL path (prefer hyphens)
Rule url.underscores · URL · 1 occurrence(s)
notice Uppercase letters in URL path
Rule url.uppercase · URL · 1 occurrence(s)
Audit your own site — free
157 checks, internal PageRank, render-diff. No signup, results in ~30s.