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61

SEO audit for cartaonline.nl

Homepage - Carta Online

blogWordPress

Health 61/100 (fair) · 50 pages crawled · generated 2026-08-26

Download Markdown report (feed to ChatGPT / Claude / Cursor)

Ontdek wat de opleidingssoftware van Carta Online voor u kan betekenen! Onze complete en gebruiksvriendelijke cursusadministratie software staat bekend om

Screenshot of cartaonline.nl
50
pages crawled
46
indexable pages
4
errors
195
warnings
527
notices
0
orphan pages
2
broken links
Category breakdown
CategoryScoreErrorsWarningsNotices
Crawlability 96 2 0 0
Links 96 2 0 46
Structured Data 45 0 91 33
Agent Readiness 72 0 46 65
Performance 72 0 46 147
Content 98 0 4 4
Meta Description 98 0 4 5
Indexability 99 0 2 0
Images 99 0 1 46
Titles 99 0 1 0
Cache 100 0 0 46
Headings 100 0 0 2
Security 100 0 0 94
Social 100 0 0 36
URL 100 0 0 3
Findings

Errors (2 rules)

error Broken internal link (target 4xx/5xx)

Rule links.broken_internal · Links · 2 occurrence(s)

error Client error (4xx) response

Rule status.4xx · Crawlability · 2 occurrence(s)

Warnings (10 rules)

warning Control has no accessible name

Rule agent.control_no_name · Agent Readiness · 46 occurrence(s)

warning Thin content (low word count)

Rule content.thin · Content · 4 occurrence(s)

warning Images missing alt text

Rule images.missing_alt · Images · 1 occurrence(s)

warning Page is noindex

Rule index.noindex · Indexability · 2 occurrence(s)

warning Missing meta description

Rule meta_desc.missing · Meta Description · 4 occurrence(s)

warning Render-blocking script in <head> (no defer/async)

Rule perf.render_blocking · Performance · 46 occurrence(s)

warning BreadcrumbList present but structurally incomplete

Rule schema.breadcrumb_incomplete · Structured Data · 45 occurrence(s)

  • https://www.cartaonline.nl/blended-learning/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/blog/ — a BreadcrumbList is present but structurally incomplete — missing required itemListElement. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/carta-online-gebruikers/wendy-bosboom-van-stichting-ooi-carta-online-biedt-veel-mogelijkheden/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/cursistenadministratie-online/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/cursus-administratie-software/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/cursusadministratie-demo/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/cursusadministratie-voor-opleiders/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/cursusadministratie/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/cursusplanning-en-roostering/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/de-juiste-gegevens-op-leeroverzicht-met-carta/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/gebruiksvriendelijke-opleidingssoftware/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/keuzehulp/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/koppelingen/leeroverzicht/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/nieuwe-features-in-carta-online/20-jaar-internationale-dag-rsi/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/nieuws/chatgpt-voor-opleiders/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/ondersteuning/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/onderwijs-en-ict/een-leven-lang-leren/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/ontwikkelingen-in-het-onderwijs/stap-budget-geautomatiseerd-in-carta-online/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/onze-service/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/organisatie-van-evenementen/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/quick-support/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/start-test/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/vergelijk/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/vergelijk/op-maat/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
  • https://www.cartaonline.nl/vraag-en-antwoord/een-creditnota-aanmaken/ — a BreadcrumbList is present but structurally incomplete — missing required name. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.

warning Schema describes content not visible on the page

Rule schema.hidden_content · Structured Data · 1 occurrence(s)

  • https://www.cartaonline.nl/koppelingen/leeroverzicht/ — a schema name/headline ("Uitlegvideo Leeroverzicht.nl") does not appear in the page's visible text — Google's policies prohibit marking up content not visible to readers. This is a heuristic (a static-HTML substring check): JS-rendered or abbreviated names can be false positives, so verify before removing.

warning Rich-result schema missing required properties

Rule schema.invalid · Structured Data · 45 occurrence(s)

warning Title likely truncated in SERP (too wide)

Rule title.too_long · Titles · 1 occurrence(s)

Notices (22 rules)

notice Heading levels skip a level

Rule agent.heading_skip · Agent Readiness · 19 occurrence(s)

notice No main landmark for AI agents

Rule agent.no_main_landmark · Agent Readiness · 46 occurrence(s)

notice Page served uncached (no-store/private or CDN bypass)

Rule cache.not_cacheable · Cache · 46 occurrence(s)

notice Low text-to-HTML ratio

Rule content.low_ratio · Content · 4 occurrence(s)

notice Multiple <h1> elements

Rule h1.multiple · Headings · 2 occurrence(s)

notice Likely hero image lacks fetchpriority=high

Rule images.hero_no_fetchpriority · Performance · 46 occurrence(s)

  • https://www.cartaonline.nl/ — the likely hero/LCP image (logo.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.cartaonline.nl/blended-learning/ — the likely hero/LCP image (logo.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.cartaonline.nl/blog/ — the likely hero/LCP image (logo.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.cartaonline.nl/carta-online-gebruikers/wendy-bosboom-van-stichting-ooi-carta-online-biedt-veel-mogelijkheden/ — the likely hero/LCP image (logo.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.cartaonline.nl/cursistenadministratie-online/ — the likely hero/LCP image (logo.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.cartaonline.nl/cursus-administratie-software/ — the likely hero/LCP image (logo.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.cartaonline.nl/cursusadministratie-demo/ — the likely hero/LCP image (logo.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.cartaonline.nl/cursusadministratie/ — the likely hero/LCP image (logo.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.cartaonline.nl/cursusplanning-en-roostering/ — the likely hero/LCP image (logo.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.cartaonline.nl/de-juiste-gegevens-op-leeroverzicht-met-carta/ — the likely hero/LCP image (logo.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.cartaonline.nl/gebruiksvriendelijke-opleidingssoftware/ — the likely hero/LCP image (logo.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.cartaonline.nl/keuzehulp/ — the likely hero/LCP image (logo.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.cartaonline.nl/koppelingen/leeroverzicht/ — the likely hero/LCP image (logo.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.cartaonline.nl/nieuwe-features-in-carta-online/20-jaar-internationale-dag-rsi/ — the likely hero/LCP image (logo.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.cartaonline.nl/nieuws/chatgpt-voor-opleiders/ — the likely hero/LCP image (logo.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.cartaonline.nl/ondersteuning/ — the likely hero/LCP image (logo.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.cartaonline.nl/onderwijs-en-ict/een-leven-lang-leren/ — the likely hero/LCP image (logo.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.cartaonline.nl/ontwikkelingen-in-het-onderwijs/stap-budget-geautomatiseerd-in-carta-online/ — the likely hero/LCP image (logo.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.cartaonline.nl/onze-service/ — the likely hero/LCP image (logo.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.cartaonline.nl/organisatie-van-evenementen/ — the likely hero/LCP image (logo.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.cartaonline.nl/quick-support/ — the likely hero/LCP image (logo.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.cartaonline.nl/start-test/ — the likely hero/LCP image (logo.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.cartaonline.nl/vergelijk/ — the likely hero/LCP image (logo.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.cartaonline.nl/vergelijk/op-maat/ — the likely hero/LCP image (logo.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.cartaonline.nl/vraag-en-antwoord/een-creditnota-aanmaken/ — the likely hero/LCP image (logo.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.

notice Images without width/height (layout shift / CLS)

Rule images.missing_dimensions · Images · 46 occurrence(s)

notice Internal link has no anchor text / accessible name

Rule links.no_anchor_text · Links · 46 occurrence(s)

notice Meta description too long

Rule meta_desc.too_long · Meta Description · 1 occurrence(s)

notice Meta description too short

Rule meta_desc.too_short · Meta Description · 4 occurrence(s)

notice Missing Open Graph tags

Rule og.missing · Social · 36 occurrence(s)

notice Large DOM (over 1500 elements) slows rendering & interaction

Rule perf.dom_size_large · Performance · 1 occurrence(s)

  • https://www.cartaonline.nl/releasenotes/ — the page has 10582 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 · 8 occurrence(s)

notice No ETag header (no conditional GET for unchanged pages)

Rule perf.no_etag · Performance · 46 occurrence(s)

  • https://www.cartaonline.nl/ — 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.cartaonline.nl/blended-learning/ — 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.cartaonline.nl/blog/ — 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.cartaonline.nl/carta-online-gebruikers/wendy-bosboom-van-stichting-ooi-carta-online-biedt-veel-mogelijkheden/ — 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.cartaonline.nl/cursistenadministratie-online/ — 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.cartaonline.nl/cursus-administratie-software/ — 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.cartaonline.nl/cursusadministratie-demo/ — 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.cartaonline.nl/cursusadministratie/ — 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.cartaonline.nl/cursusplanning-en-roostering/ — 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.cartaonline.nl/de-juiste-gegevens-op-leeroverzicht-met-carta/ — 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.cartaonline.nl/gebruiksvriendelijke-opleidingssoftware/ — 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.cartaonline.nl/keuzehulp/ — 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.cartaonline.nl/koppelingen/leeroverzicht/ — 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.cartaonline.nl/nieuwe-features-in-carta-online/20-jaar-internationale-dag-rsi/ — 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.cartaonline.nl/nieuws/chatgpt-voor-opleiders/ — 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.cartaonline.nl/ondersteuning/ — 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.cartaonline.nl/onderwijs-en-ict/een-leven-lang-leren/ — 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.cartaonline.nl/ontwikkelingen-in-het-onderwijs/stap-budget-geautomatiseerd-in-carta-online/ — 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.cartaonline.nl/onze-service/ — 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.cartaonline.nl/organisatie-van-evenementen/ — 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.cartaonline.nl/quick-support/ — 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.cartaonline.nl/start-test/ — 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.cartaonline.nl/vergelijk/ — 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.cartaonline.nl/vergelijk/op-maat/ — 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.cartaonline.nl/vraag-en-antwoord/een-creditnota-aanmaken/ — 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 · 46 occurrence(s)

  • https://www.cartaonline.nl/ — 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.cartaonline.nl/blended-learning/ — 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.cartaonline.nl/blog/ — 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.cartaonline.nl/carta-online-gebruikers/wendy-bosboom-van-stichting-ooi-carta-online-biedt-veel-mogelijkheden/ — 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.cartaonline.nl/cursistenadministratie-online/ — 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.cartaonline.nl/cursus-administratie-software/ — 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.cartaonline.nl/cursusadministratie-demo/ — 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.cartaonline.nl/cursusadministratie/ — 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.cartaonline.nl/cursusplanning-en-roostering/ — 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.cartaonline.nl/de-juiste-gegevens-op-leeroverzicht-met-carta/ — 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.cartaonline.nl/gebruiksvriendelijke-opleidingssoftware/ — 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.cartaonline.nl/keuzehulp/ — 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.cartaonline.nl/koppelingen/leeroverzicht/ — 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.cartaonline.nl/nieuwe-features-in-carta-online/20-jaar-internationale-dag-rsi/ — 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.cartaonline.nl/nieuws/chatgpt-voor-opleiders/ — 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.cartaonline.nl/ondersteuning/ — 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.cartaonline.nl/onderwijs-en-ict/een-leven-lang-leren/ — 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.cartaonline.nl/ontwikkelingen-in-het-onderwijs/stap-budget-geautomatiseerd-in-carta-online/ — 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.cartaonline.nl/onze-service/ — 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.cartaonline.nl/organisatie-van-evenementen/ — 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.cartaonline.nl/quick-support/ — 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.cartaonline.nl/start-test/ — 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.cartaonline.nl/vergelijk/ — 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.cartaonline.nl/vergelijk/op-maat/ — 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.cartaonline.nl/vraag-en-antwoord/een-creditnota-aanmaken/ — 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 Article schema missing recommended properties (Top Stories / image carousel)

Rule schema.article_incomplete · Structured Data · 32 occurrence(s)

  • https://www.cartaonline.nl/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/blended-learning/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/cloudoplossing/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/cursistenadministratie-online/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/cursistenadministratie-software/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/cursus-administratie-software/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/cursusadministratie-demo/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/cursusadministratie-voor-opleiders/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/cursusadministratie/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/cursusadministratie/koppelingen/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/cursusplanning-en-roostering/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/cursussen/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/de-juiste-gegevens-op-leeroverzicht-met-carta/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/gebruiksvriendelijke-opleidingssoftware/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/keuzehulp/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/learning-management-systeem/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/ondersteuning/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/onze-service/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/opleidingsadministratie/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/opleidingssoftware/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/organisatie-van-evenementen/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/quick-support/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/releasenotes/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/vergelijk/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.
  • https://www.cartaonline.nl/vergelijk/op-maat/ — Article structured data is missing recommended property (image) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.

notice Deprecated schema type with no Google rich result

Rule schema.deprecated_type · Structured Data · 1 occurrence(s)

  • https://www.cartaonline.nl/ — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.

notice Missing recommended security headers

Rule security.missing_headers · Security · 48 occurrence(s)

notice target=_blank link without rel=noopener (tab-napping)

Rule security.unsafe_cross_origin_links · Security · 46 occurrence(s)

notice URL is very long

Rule url.too_long · URL · 1 occurrence(s)

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)

Pages (showing 50 of 50)
URLStatusIndexableWordsIn-links
https://www.cartaonline.nl/
Homepage - Carta Online		 200 yes 421 48
https://www.cartaonline.nl/algemene-voorwaarden/
Algemene voorwaarden - Carta Online		 200 yes 164 48
https://www.cartaonline.nl/blog/
Blog - Carta Online		 200 yes 716 48
https://www.cartaonline.nl/contact/
Contact | Carta Online		 200 yes 242 48
https://www.cartaonline.nl/cursusadministratie/
Cursusadministratie - Carta Online		 200 yes 742 48
https://www.cartaonline.nl/cursussen/
Cursussen | Carta Online		 200 yes 424 48
https://www.cartaonline.nl/demo-aanvragen/
Demo aanvragen - Carta Online		 200 yes 338 48
https://www.cartaonline.nl/keuzehulp/
Keuzehulp - Carta Online		 200 yes 268 48
https://www.cartaonline.nl/ondersteuning/
Uw vragen | Carta online		 200 yes 667 48
https://www.cartaonline.nl/onze-service/
Onze service | Carta Online		 200 yes 591 48
https://www.cartaonline.nl/quick-support/
Quick Support | Carta Online		 200 yes 205 48
https://www.cartaonline.nl/vacatures/
Vacatures - Carta Online		 200 yes 145 48
https://www.cartaonline.nl/vergelijk/
Oplossingen - Carta Online		 200 yes 545 48
https://www.cartaonline.nl/vergelijk/op-maat/
Op maat - Carta Online		 200 yes 417 48
https://www.cartaonline.nl/wij-zijn-carta-online/
Over ons | Carta Online		 200 yes 720 48
https://www.cartaonline.nl/blended-learning/
Blended learning | Carta Online		 200 yes 490 2
https://www.cartaonline.nl/cursusadministratie/koppelingen/
Koppelingen | Carta Online		 200 yes 523 2
https://www.cartaonline.nl/help-ik-weet-niet-wat-ik-moet-kiezen/
Wat heb ik nodig? | Carta Online		 200 yes 558 2
https://www.cartaonline.nl/organisatie-van-evenementen/
Organisatie van evenementen | Carta Online		 200 yes 590 2
https://www.cartaonline.nl/categorie/carta-online-gebruikers/
Carta Online gebruikers - Carta Online		 200 yes 669 3
https://www.cartaonline.nl/vacatures/vacature-projectmanager/
Vacature Projectmanager | Carta Online		 200 yes 496 1
https://www.cartaonline.nl/koppelingen/leeroverzicht/
Leeroverzicht - Carta Online		 200 yes 659 2
https://www.cartaonline.nl/vraag-en-antwoord/een-creditnota-aanmaken/
Een creditnota aanmaken - Carta Online		 200 yes 453 1
https://www.cartaonline.nl/cursusplanning-en-roostering/
Cursusplanning en roostering | Carta Online		 200 yes 515 1
https://www.cartaonline.nl/learning-management-systeem/
Learning management systeem | Carta Online		 200 yes 539 1
https://www.cartaonline.nl/projecten/
Projecten - Carta Online		 200 yes 165 2
https://www.cartaonline.nl/de-juiste-gegevens-op-leeroverzicht-met-carta/
Leeroverzicht.nl en gegevens van Carta | Carta Online		 200 yes 1034 1
https://www.cartaonline.nl/carta-online-gebruikers/wendy-bosboom-van-stichting-ooi-carta-online-biedt-veel-mogelijkheden/
Wendy Bosboom van Stichting OOI: “ Carta Online biedt veel mogelijkheden” - Carta Online		 200 yes 693 1
https://www.cartaonline.nl/projecten/project-11/
Project 11 - Carta Online		 200 yes 149 1
https://www.cartaonline.nl/bedankt/
Bedankt - Carta Online		 200 yes 202 0
https://www.cartaonline.nl/cloudoplossing/
Cloudoplossing | Carta Online		 200 yes 411 0
https://www.cartaonline.nl/congresregistratie/
Congresregistratie | Carta Online		 200 yes 567 0
https://www.cartaonline.nl/cursistenadministratie-online/
Cursistenadministratie online | Carta Online		 200 yes 451 0
https://www.cartaonline.nl/cursistenadministratie-software/
Cursistenadministratie software | Carta Online		 200 yes 604 0
https://www.cartaonline.nl/cursus-administratie-software/
Cursusadministratie software | Carta Online		 200 yes 521 0
https://www.cartaonline.nl/cursusadministratie-demo/
Cursusadministratie demo - Carta Online		 200 yes 691 0
https://www.cartaonline.nl/cursusadministratie-voor-opleiders/
Cursusadministratie voor opleiders | Carta Online		 200 yes 1090 0
https://www.cartaonline.nl/gebruiksvriendelijke-opleidingssoftware/
Gebruiksvriendelijke opleidingssoftware | Carta Online		 200 yes 614 0
https://www.cartaonline.nl/nieuwe-features-in-carta-online/20-jaar-internationale-dag-rsi/
20 jaar Internationale dag van de RSI - Carta Online		 200 yes 650 0
https://www.cartaonline.nl/nieuws/chatgpt-voor-opleiders/
ChatGPT voor opleiders - Carta Online		 200 yes 1201 0
https://www.cartaonline.nl/onderwijs-en-ict/een-leven-lang-leren/
Een leven lang leren | Carta Online		 200 yes 589 0
https://www.cartaonline.nl/ontwikkelingen-in-het-onderwijs/stap-budget-geautomatiseerd-in-carta-online/
Automatisering STAP-budget | Carta Online		 200 yes 599 0
https://www.cartaonline.nl/opleidingsadministratie/
Opleidingsadministratie | Carta Online		 200 yes 530 0
https://www.cartaonline.nl/opleidingssoftware/
Opleidingssoftware | Carta Online		 200 yes 705 0
https://www.cartaonline.nl/releasenotes/
Releasenotes - Carta Online		 200 yes 18979 0
https://www.cartaonline.nl/start-test/
start test - Carta Online		 200 yes 214 0
https://www.cartaonline.nl/functies
Page Not Found - Carta Online		 404 no 158 1
https://www.cartaonline.nl/oplossingen/
Page Not Found - Carta Online		 404 no 158 1
https://www.cartaonline.nl/sitemap_index.xml 200 no 0 48
https://www.cartaonline.nl/wp-content/uploads/Privacyverklaring-Carta-Online.pdf 200 no 0 48

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