Catalog / arcaege.dev
71

SEO audit for arcaege.dev

Arca's site

other

Health 71/100 (fair) · 23 pages crawled · generated 2026-08-26

Download Markdown report (feed to ChatGPT / Claude / Cursor)
23
pages crawled
19
indexable pages
0
errors
75
warnings
219
notices
0
orphan pages
0
broken links
Category breakdown
CategoryScoreErrorsWarningsNotices
Duplicate 74 0 20 0
Canonical 75 0 19 0
Meta Description 75 0 19 0
Content 78 0 17 1
Agent Readiness 100 0 0 13
Cache 100 0 0 19
Headings 100 0 0 1
Images 100 0 0 19
Links 100 0 0 13
Performance 100 0 0 57
Security 100 0 0 19
Social 100 0 0 38
Structured Data 100 0 0 19
Titles 100 0 0 19
URL 100 0 0 1
Findings

Warnings (5 rules)

warning Missing canonical tag

Rule canonical.missing · Canonical · 19 occurrence(s)

warning Thin content (low word count)

Rule content.thin · Content · 17 occurrence(s)

warning Homepage duplicated across protocol/host variants (no redirect)

Rule duplicate.protocol_host · Duplicate · 1 occurrence(s)

  • https://arcaege.dev/ — http://arcaege.dev/ serves the same homepage content with a 200 and no redirect — Google sees a duplicate. Pick one canonical host/scheme and 301-redirect the others.

warning Duplicate <title> across pages

Rule duplicate.title · Duplicate · 19 occurrence(s)

warning Missing meta description

Rule meta_desc.missing · Meta Description · 19 occurrence(s)

Notices (16 rules)

notice Heading levels skip a level

Rule agent.heading_skip · Agent Readiness · 12 occurrence(s)

notice No llms.txt for AI agents

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

  • https://arcaege.dev/ — no llms.txt found at the site root — add one so AI agents get a curated site summary

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

Rule cache.not_cacheable · Cache · 19 occurrence(s)

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

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

  • https://arcaege.dev/projects/2025-08-15-ESP32-CNC.html — this page reads as difficult (Flesch Reading Ease 47, 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 · 1 occurrence(s)

notice Likely hero image lacks fetchpriority=high

Rule images.hero_no_fetchpriority · Performance · 19 occurrence(s)

  • https://arcaege.dev/ — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/about.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/interesting.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/posts.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2020-03-17-coronavirus-counter.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2023-10-1-pen-plotter.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2025-06-30-day-progress.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2025-06-30-flappy.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2025-08-07-picobug.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2025-08-15-ESP32-CNC.html — the likely hero/LCP image (esp32-cnc.webp) 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://arcaege.dev/projects/2025-09-10-embedded-engine.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2025-09-20-website.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2025-10-05-coin3d.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2025-11-30-construct.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2026-01-16-zvs-flyback.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/projects/2026-05-13-capacitor-450v.html — the likely hero/LCP image (capacitor-250v.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://arcaege.dev/projects/2026-06-12-capacitor-alarm-clock.html — the likely hero/LCP image (penguin.gif) 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://arcaege.dev/readinglist.html — the likely hero/LCP image (penguin.gif) 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 · 19 occurrence(s)

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

Rule links.single_inlink · Links · 13 occurrence(s)

notice Missing Open Graph tags

Rule og.missing · Social · 19 occurrence(s)

notice Legacy image format (jpg/png/gif) with no next-gen fallback

Rule perf.images_legacy_format · Performance · 19 occurrence(s)

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

Rule perf.no_etag · Performance · 19 occurrence(s)

  • https://arcaege.dev/ — 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://arcaege.dev/about.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/interesting.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/posts.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2020-03-17-coronavirus-counter.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2023-10-1-pen-plotter.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2025-06-30-day-progress.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2025-06-30-flappy.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2025-08-07-picobug.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2025-08-15-ESP32-CNC.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2025-09-10-embedded-engine.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2025-09-20-website.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2025-10-05-coin3d.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2025-11-30-construct.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2026-01-16-zvs-flyback.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2026-05-13-capacitor-450v.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/projects/2026-06-12-capacitor-alarm-clock.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
  • https://arcaege.dev/readinglist.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.

notice No structured data detected

Rule schema.none · Structured Data · 19 occurrence(s)

notice Missing recommended security headers

Rule security.missing_headers · Security · 19 occurrence(s)

notice Title is very short

Rule title.too_short · Titles · 19 occurrence(s)

notice Missing Twitter Card tag

Rule twitter.missing · Social · 19 occurrence(s)

notice Uppercase letters in URL path

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

Pages (showing 23 of 23)
URLStatusIndexableWordsIn-links
https://arcaege.dev/projects.html
Arca's site		 200 yes 316 18
https://arcaege.dev/
Arca's site		 200 yes 78 18
https://arcaege.dev/about.html
Arca's site		 200 yes 118 18
https://arcaege.dev/interesting.html
Arca's site		 200 yes 708 18
https://arcaege.dev/posts.html
Arca's site		 200 yes 56 18
https://arcaege.dev/readinglist.html
Arca's site		 200 yes 72 18
https://arcaege.dev/projects/2020-03-17-coronavirus-counter.html
Arca's site		 200 yes 74 1
https://arcaege.dev/projects/2023-10-1-pen-plotter.html
Arca's site		 200 yes 151 1
https://arcaege.dev/projects/2025-06-30-day-progress.html
Arca's site		 200 yes 82 1
https://arcaege.dev/projects/2025-06-30-flappy.html
Arca's site		 200 yes 82 1
https://arcaege.dev/projects/2025-08-07-picobug.html
Arca's site		 200 yes 103 1
https://arcaege.dev/projects/2025-08-15-ESP32-CNC.html
Arca's site		 200 yes 186 1
https://arcaege.dev/projects/2025-09-10-embedded-engine.html
Arca's site		 200 yes 128 1
https://arcaege.dev/projects/2025-09-20-website.html
Arca's site		 200 yes 102 1
https://arcaege.dev/projects/2025-10-05-coin3d.html
Arca's site		 200 yes 69 1
https://arcaege.dev/projects/2025-11-30-construct.html
Arca's site		 200 yes 114 1
https://arcaege.dev/projects/2026-01-16-zvs-flyback.html
Arca's site		 200 yes 104 1
https://arcaege.dev/projects/2026-05-13-capacitor-450v.html
Arca's site		 200 yes 100 1
https://arcaege.dev/projects/2026-06-12-capacitor-alarm-clock.html
Arca's site		 200 yes 111 1
https://arcaege.dev/feed.xml 200 no 0 1
https://arcaege.dev/feed/interesting.xml 200 no 0 1
https://arcaege.dev/feed/projects.xml 200 no 0 1
https://arcaege.dev/feed/readinglist.xml 200 no 0 1

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