Catalog / wouterdebruijn.nl
45

SEO audit for wouterdebruijn.nl

Wouter de Bruijn

other

Health 45/100 (poor) · 6 pages crawled · generated 2026-07-29

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

Personal website of Wouter de Bruijn

Screenshot of wouterdebruijn.nl
6
pages crawled
5
indexable pages
2
errors
14
warnings
63
notices
0
orphan pages
1
broken links
Category breakdown
CategoryScoreErrorsWarningsNotices
Crawlability 83 1 0 0
Links 83 1 0 3
Canonical 75 0 5 0
Performance 85 0 3 16
Content 95 0 1 6
Headings 95 0 1 3
Indexability 95 0 1 0
Meta Description 95 0 1 2
Rendering 95 0 1 0
Security 95 0 1 6
Agent Readiness 100 0 0 5
Cache 100 0 0 4
Robots 100 0 0 1
Social 100 0 0 10
Structured Data 100 0 0 5
Titles 100 0 0 2
Findings

Errors (2 rules)

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

Rule links.broken_internal · Links · 1 occurrence(s)

error Client error (4xx) response

Rule status.4xx · Crawlability · 1 occurrence(s)

Warnings (8 rules)

warning Missing canonical tag

Rule canonical.missing · Canonical · 5 occurrence(s)

warning Thin content (low word count)

Rule content.thin · Content · 1 occurrence(s)

warning Missing <h1>

Rule h1.missing · Headings · 1 occurrence(s)

warning Content-Type header doesn't match the actual content

Rule headers.content_type_mismatch · Security · 1 occurrence(s)

  • https://wouterdebruijn.nl/api/auth/signin — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".

warning Hero/LCP image is lazy-loaded (loading=lazy delays LCP)

Rule images.no_lazy_lcp_candidate · Performance · 3 occurrence(s)

  • https://wouterdebruijn.nl/projects/legacy-website-posts — the likely hero/LCP image (image) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
  • https://wouterdebruijn.nl/projects/new-website — the likely hero/LCP image (image) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
  • https://wouterdebruijn.nl/projects/toolenburgerplas — the likely hero/LCP image (image) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.

warning Page is noindex

Rule index.noindex · Indexability · 1 occurrence(s)

warning Missing meta description

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

warning Content only rendered by JavaScript (invisible to non-JS crawlers & AI)

Rule rendering.js_shell · Rendering · 1 occurrence(s)

  • https://wouterdebruijn.nl/api/auth/signin — Raw HTML has 6 words and 0 links — this page is built by JavaScript in the browser. Googlebot renders JS but delays it, and most crawlers and AI assistants (ChatGPT, Perplexity, Claude) don't run JavaScript at all, so to them the page looks empty. Server-render or pre-render your main content and navigation.

Notices (18 rules)

notice No llms.txt for AI agents

Rule agent.llms_txt_missing · Agent Readiness · 1 occurrence(s)

notice No main landmark for AI agents

Rule agent.no_main_landmark · Agent Readiness · 4 occurrence(s)

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

Rule cache.not_cacheable · Cache · 4 occurrence(s)

notice Low text-to-HTML ratio

Rule content.low_ratio · Content · 2 occurrence(s)

notice Main text is hard to read (low Flesch Reading Ease)

Rule content.readability_poor · Content · 1 occurrence(s)

  • https://wouterdebruijn.nl/ — 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.

notice Multiple <h1> elements

Rule h1.multiple · Headings · 3 occurrence(s)

notice Page has only one internal inlink (fragile crawl path)

Rule links.single_inlink · Links · 3 occurrence(s)

notice Legacy <meta name=keywords> tag present (Google ignores it)

Rule meta.keywords_present · Content · 3 occurrence(s)

notice Meta description too short

Rule meta_desc.too_short · Meta Description · 2 occurrence(s)

notice Missing Open Graph tags

Rule og.missing · Social · 5 occurrence(s)

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

Rule perf.no_etag · Performance · 5 occurrence(s)

  • https://wouterdebruijn.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://wouterdebruijn.nl/api/auth/signin — 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://wouterdebruijn.nl/projects/legacy-website-posts — 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://wouterdebruijn.nl/projects/new-website — 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://wouterdebruijn.nl/projects/toolenburgerplas — 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 · 5 occurrence(s)

  • https://wouterdebruijn.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://wouterdebruijn.nl/api/auth/signin — 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://wouterdebruijn.nl/projects/legacy-website-posts — 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://wouterdebruijn.nl/projects/new-website — 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://wouterdebruijn.nl/projects/toolenburgerplas — 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 Slow server response

Rule perf.slow_response · Performance · 6 occurrence(s)

notice robots.txt missing (root returns 404/none)

Rule robots.txt_missing · Robots · 1 occurrence(s)

  • https://wouterdebruijn.nl/ — 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 · 5 occurrence(s)

notice Missing recommended security headers

Rule security.missing_headers · Security · 6 occurrence(s)

notice Title is very short

Rule title.too_short · Titles · 2 occurrence(s)

notice Missing Twitter Card tag

Rule twitter.missing · Social · 5 occurrence(s)

Pages (showing 6 of 6)
URLStatusIndexableWordsIn-links
https://wouterdebruijn.nl/
Wouter de Bruijn		 200 yes 317 3
https://wouterdebruijn.nl/projects/legacy-website-posts
Legacy website posts		 200 yes 3119 2
https://wouterdebruijn.nl/api/auth/signin
Sign In		 200 yes 6 1
https://wouterdebruijn.nl/projects/new-website
New Website		 200 yes 831 1
https://wouterdebruijn.nl/projects/toolenburgerplas
Toolenburgerplas.nl		 200 yes 1263 1
https://wouterdebruijn.nl/sjors.html
Wouter de Bruijn		 404 no 7 1

Audit your own site — free

157 checks, internal PageRank, render-diff. No signup, results in ~30s.

Scan your site →