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SEO audit for acero.co.jp

株式会社アチェロ

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Health 65/100 (fair) · 5 pages crawled · generated 2026-08-26

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株式会社アチェロ

Screenshot of acero.co.jp
5
pages crawled
5
indexable pages
0
errors
32
warnings
54
notices
0
orphan pages
0
broken links
Category breakdown
CategoryScoreErrorsWarningsNotices
Canonical 70 0 5 0
Content 70 0 5 5
Performance 70 0 5 13
Security 70 0 5 2
Duplicate 76 0 4 3
Headings 82 0 3 0
Meta Description 88 0 2 5
Mobile 88 0 2 0
Images 94 0 1 4
Agent Readiness 100 0 0 1
Links 100 0 0 2
Robots 100 0 0 1
Social 100 0 0 10
Structured Data 100 0 0 5
Titles 100 0 0 2
URL 100 0 0 1
Findings

Warnings (10 rules)

warning Missing canonical tag

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

warning Thin content (low word count)

Rule content.thin · Content · 5 occurrence(s)

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

Rule duplicate.protocol_host · Duplicate · 2 occurrence(s)

  • https://acero.co.jp/ — http://acero.co.jp/ 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.
  • https://acero.co.jp/ — http://www.acero.co.jp/ 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 · 2 occurrence(s)

warning Missing <h1>

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

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

Rule headers.content_type_mismatch · Security · 5 occurrence(s)

  • http://www.acero.co.jp/ — 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".
  • http://www.acero.co.jp/kaedekarin/kaedekarin_home.html — 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".
  • http://www.acero.co.jp/kaedekarin/pr.html — 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".
  • https://acero.co.jp/ — 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".
  • https://acero.co.jp/about.html — 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 Images missing alt text

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

warning Missing meta description

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

warning Missing viewport meta tag

Rule mobile.viewport_missing · Mobile · 2 occurrence(s)

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

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

Notices (17 rules)

notice No llms.txt for AI agents

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

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

notice Title tag and meta description are identical

Rule content.title_meta_same · Meta Description · 2 occurrence(s)

  • http://www.acero.co.jp/ — the meta description is identical to the <title> — write a distinct description to control the SERP snippet
  • https://acero.co.jp/ — the meta description is identical to the <title> — write a distinct description to control the SERP snippet

notice Duplicate meta description across pages

Rule duplicate.meta_desc · Duplicate · 3 occurrence(s)

notice Likely hero image lacks fetchpriority=high

Rule images.hero_no_fetchpriority · Performance · 4 occurrence(s)

  • http://www.acero.co.jp/ — the likely hero/LCP image (tree_karin.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.
  • http://www.acero.co.jp/kaedekarin/kaedekarin_home.html — the likely hero/LCP image (company_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
  • http://www.acero.co.jp/kaedekarin/pr.html — the likely hero/LCP image (company_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
  • https://acero.co.jp/ — the likely hero/LCP image (tree_karin.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.

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

Rule images.missing_dimensions · Images · 4 occurrence(s)

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

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

  • http://www.acero.co.jp/kaedekarin/pr.html — only one internal link points here — if that source changes, this page becomes an orphan. Add more contextual internal links to strengthen the crawl path.
  • https://acero.co.jp/about.html — only one internal link points here — if that source changes, this page becomes an orphan. Add more contextual internal links to strengthen the crawl path.

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

Rule meta.keywords_present · Content · 5 occurrence(s)

notice Meta description too short

Rule meta_desc.too_short · Meta Description · 3 occurrence(s)

notice Missing Open Graph tags

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

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

Rule perf.images_legacy_format · Performance · 4 occurrence(s)

  • http://www.acero.co.jp/ — 7 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.
  • http://www.acero.co.jp/kaedekarin/kaedekarin_home.html — 3 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.
  • http://www.acero.co.jp/kaedekarin/pr.html — 3 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://acero.co.jp/ — 7 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 · 5 occurrence(s)

  • http://www.acero.co.jp/ — 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.
  • http://www.acero.co.jp/kaedekarin/kaedekarin_home.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.
  • http://www.acero.co.jp/kaedekarin/pr.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://acero.co.jp/ — 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://acero.co.jp/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.

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

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

  • https://acero.co.jp/ — 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 · 2 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)

notice Underscores in URL path (prefer hyphens)

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

Pages (showing 5 of 5)
URLStatusIndexableWordsIn-links
http://www.acero.co.jp/kaedekarin/kaedekarin_home.html
花楓かりん　かりんとう｜株式会社アチェロ		 200 yes 2 2
http://www.acero.co.jp/
株式会社アチェロ		 200 yes 0 2
http://www.acero.co.jp/kaedekarin/pr.html
花楓かりんについて｜花楓かりん　かりんとう｜株式会社アチェロ		 200 yes 9 1
https://acero.co.jp/about.html
About Us｜株式会社アチェロ		 200 yes 23 1
https://acero.co.jp/
株式会社アチェロ		 200 yes 0 0

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