Catalog / 9coma.com
61

SEO audit for 9coma.com

私を構成する9つのマンガ | 9コマ（9coma / 9koma）

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

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

9コマ（9koma / 9coma）は、私を構成する9つのマンガを3×3のタイル状のページにして共有できるサービスです。人生のバイブルや最近の推しを整理して、あなただけの「マンガ棚」をSNSでシェアしませんか？

Screenshot of 9coma.com
50
pages crawled
48
indexable pages
4
errors
144
warnings
442
notices
0
orphan pages
2
broken links
Category breakdown
CategoryScoreErrorsWarningsNotices
Crawlability 96 2 0 0
Links 96 2 0 0
Canonical 71 0 48 0
Content 72 0 46 46
Duplicate 83 0 29 29
Performance 89 0 19 147
Indexability 99 0 2 0
Agent Readiness 100 0 0 1
Cache 100 0 0 27
Images 100 0 0 45
Meta Description 100 0 0 19
Robots 100 0 0 1
Security 100 0 0 50
Structured Data 100 0 0 48
URL 100 0 0 29
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 (5 rules)

warning Missing canonical tag

Rule canonical.missing · Canonical · 48 occurrence(s)

warning Thin content (low word count)

Rule content.thin · Content · 46 occurrence(s)

warning Duplicate <title> across pages

Rule duplicate.title · Duplicate · 29 occurrence(s)

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

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

  • https://9coma.com/ — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=3CBoLg8OdVHkxsTBaGMJ — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=4E0P2LYwvW7rQrDQleXk — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=8Av4LYqbTOui1DngvjCN — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=ATu6E4cPpCPpHn2nnzoN — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=DlwJOKfB89g9Pv07V6rW — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=FwULC5ICxX1U1AjzApKV — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=IOoG1K8r17Lsrp99soaR — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=P0uln8zkWUrOCOGqUN6K — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=QC9zvIG6wfFy3cOb0dYP — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=Z0U8qLZfmlrp71oVT8cr — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=bBAb22yQWEgChTN0pvCA — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=dvmhb9ooX8Z0y1u32Jyl — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=liKUY7FBRJDTRhjmVsp9 — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=pONMMKfujpeQWAHdfmqO — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=xKYsXdNVwdBnUax91fHY — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=ywpyBLVkvko35ZzrIlty — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/?clone=zQHLJ2aJglbJ1cpKMUHT — the likely hero/LCP image (9784091336217.gif) 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://9coma.com/lists — the likely hero/LCP image (9784091336217.gif) 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 · 2 occurrence(s)

Notices (17 rules)

notice No llms.txt for AI agents

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

  • https://9coma.com/ — 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 · 27 occurrence(s)

notice Low text-to-HTML ratio

Rule content.low_ratio · Content · 46 occurrence(s)

notice Duplicate meta description across pages

Rule duplicate.meta_desc · Duplicate · 29 occurrence(s)

notice Likely hero image lacks fetchpriority=high

Rule images.hero_no_fetchpriority · Performance · 26 occurrence(s)

  • https://9coma.com/author/%E3%81%82%E3%82%8A%E3%81%84%E3%82%81%E3%82%81%E3%81%93 — the likely hero/LCP image (9784758072069.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://9coma.com/author/%E3%81%8A%E3%81%8A%E3%81%B0%E3%82%84%E3%81%97%E3%81%BF%E3%82%86%E3%81%8D — the likely hero/LCP image (09138373.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://9coma.com/author/%E5%A4%A7%E9%AB%98%20%E5%BF%8D — the likely hero/LCP image (9784065374177_1_2.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://9coma.com/author/%E5%B0%9A%E6%9C%88%E5%9C%B0 — the likely hero/LCP image (noimage_01.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://9coma.com/author/%E6%9D%89%E5%B4%8E%E3%80%80%E3%82%86%E3%81%8D%E3%82%8B — the likely hero/LCP image (9784041205136.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://9coma.com/author/%E7%94%B0%E6%9D%91%E7%94%B1%E7%BE%8E — the likely hero/LCP image (9784088440903.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://9coma.com/author/%E7%A8%AE%E6%9D%91%E6%9C%89%E8%8F%9C — the likely hero/LCP image (9784086194303_1_2.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://9coma.com/author/%E7%AF%A0%E5%8E%9F%E5%8D%83%E7%B5%B5 — the likely hero/LCP image (9784091394354_1_5.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://9coma.com/author/CLAMP — the likely hero/LCP image (9784041116890_1_3.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://9coma.com/list/3CBoLg8OdVHkxsTBaGMJ — the likely hero/LCP image (9784757529298_1_3.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://9coma.com/list/8Av4LYqbTOui1DngvjCN — the likely hero/LCP image (9784063132489_1_9.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://9coma.com/list/ATu6E4cPpCPpHn2nnzoN — the likely hero/LCP image (9784061744806.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://9coma.com/list/DlwJOKfB89g9Pv07V6rW — the likely hero/LCP image (9784063524857.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://9coma.com/list/FwULC5ICxX1U1AjzApKV — the likely hero/LCP image (9784063132489_1_9.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://9coma.com/list/IOoG1K8r17Lsrp99soaR — the likely hero/LCP image (9784088537917.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://9coma.com/list/P0uln8zkWUrOCOGqUN6K — the likely hero/LCP image (9784063132489_1_9.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://9coma.com/list/QC9zvIG6wfFy3cOb0dYP — the likely hero/LCP image (9784061744806.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://9coma.com/list/Z0U8qLZfmlrp71oVT8cr — the likely hero/LCP image (9784088814957.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://9coma.com/list/bBAb22yQWEgChTN0pvCA — the likely hero/LCP image (9784091336217.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://9coma.com/list/dvmhb9ooX8Z0y1u32Jyl — the likely hero/LCP image (9784757542266.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://9coma.com/list/liKUY7FBRJDTRhjmVsp9 — the likely hero/LCP image (9784061744806.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://9coma.com/list/pONMMKfujpeQWAHdfmqO — the likely hero/LCP image (9784063132489_1_9.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://9coma.com/list/xKYsXdNVwdBnUax91fHY — the likely hero/LCP image (9784088727172_1_3.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://9coma.com/list/ywpyBLVkvko35ZzrIlty — the likely hero/LCP image (9784063132489_1_9.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://9coma.com/list/zQHLJ2aJglbJ1cpKMUHT — the likely hero/LCP image (9784088537917.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 · 45 occurrence(s)

notice Meta description too short

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

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

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

  • https://9coma.com/lists — the page has 3355 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)

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

Rule perf.no_etag · Performance · 27 occurrence(s)

  • https://9coma.com/author/%E3%81%82%E3%82%8A%E3%81%84%E3%82%81%E3%82%81%E3%81%93 — 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://9coma.com/author/%E3%81%8A%E3%81%8A%E3%81%B0%E3%82%84%E3%81%97%E3%81%BF%E3%82%86%E3%81%8D — 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://9coma.com/author/%E5%A4%A7%E9%AB%98%20%E5%BF%8D — 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://9coma.com/author/%E5%B0%9A%E6%9C%88%E5%9C%B0 — 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://9coma.com/author/%E6%9D%89%E5%B4%8E%E3%80%80%E3%82%86%E3%81%8D%E3%82%8B — 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://9coma.com/author/%E7%94%B0%E6%9D%91%E7%94%B1%E7%BE%8E — 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://9coma.com/author/%E7%A8%AE%E6%9D%91%E6%9C%89%E8%8F%9C — 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://9coma.com/author/%E7%AF%A0%E5%8E%9F%E5%8D%83%E7%B5%B5 — 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://9coma.com/author/CLAMP — 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://9coma.com/list/3CBoLg8OdVHkxsTBaGMJ — 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://9coma.com/list/8Av4LYqbTOui1DngvjCN — 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://9coma.com/list/ATu6E4cPpCPpHn2nnzoN — 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://9coma.com/list/DlwJOKfB89g9Pv07V6rW — 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://9coma.com/list/FwULC5ICxX1U1AjzApKV — 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://9coma.com/list/IOoG1K8r17Lsrp99soaR — 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://9coma.com/list/P0uln8zkWUrOCOGqUN6K — 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://9coma.com/list/QC9zvIG6wfFy3cOb0dYP — 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://9coma.com/list/bBAb22yQWEgChTN0pvCA — 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://9coma.com/list/dvmhb9ooX8Z0y1u32Jyl — 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://9coma.com/list/liKUY7FBRJDTRhjmVsp9 — 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://9coma.com/list/pONMMKfujpeQWAHdfmqO — 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://9coma.com/list/xKYsXdNVwdBnUax91fHY — 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://9coma.com/list/ywpyBLVkvko35ZzrIlty — 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://9coma.com/list/zQHLJ2aJglbJ1cpKMUHT — 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://9coma.com/lists — 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 · 48 occurrence(s)

  • https://9coma.com/ — 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://9coma.com/9tube — 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://9coma.com/?clone=FwULC5ICxX1U1AjzApKV — 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://9coma.com/?clone=IOoG1K8r17Lsrp99soaR — 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://9coma.com/?clone=bBAb22yQWEgChTN0pvCA — 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://9coma.com/?clone=dvmhb9ooX8Z0y1u32Jyl — 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://9coma.com/?clone=pONMMKfujpeQWAHdfmqO — 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://9coma.com/?clone=zQHLJ2aJglbJ1cpKMUHT — 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://9coma.com/about — 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://9coma.com/author/%E3%81%82%E3%82%8A%E3%81%84%E3%82%81%E3%82%81%E3%81%93 — 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://9coma.com/author/%E3%81%8A%E3%81%8A%E3%81%B0%E3%82%84%E3%81%97%E3%81%BF%E3%82%86%E3%81%8D — 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://9coma.com/author/%E5%A4%A7%E9%AB%98%20%E5%BF%8D — 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://9coma.com/author/%E6%9D%89%E5%B4%8E%E3%80%80%E3%82%86%E3%81%8D%E3%82%8B — 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://9coma.com/author/%E7%94%B0%E6%9D%91%E7%94%B1%E7%BE%8E — 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://9coma.com/author/%E7%A8%AE%E6%9D%91%E6%9C%89%E8%8F%9C — 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://9coma.com/author/%E7%AF%A0%E5%8E%9F%E5%8D%83%E7%B5%B5 — 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://9coma.com/author/CLAMP — 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://9coma.com/list/FwULC5ICxX1U1AjzApKV — 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://9coma.com/list/IOoG1K8r17Lsrp99soaR — 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://9coma.com/list/bBAb22yQWEgChTN0pvCA — 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://9coma.com/list/dvmhb9ooX8Z0y1u32Jyl — 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://9coma.com/list/pONMMKfujpeQWAHdfmqO — 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://9coma.com/list/zQHLJ2aJglbJ1cpKMUHT — 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://9coma.com/lists — 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://9coma.com/privacy — 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://9coma.com/ — 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 · 48 occurrence(s)

notice Missing recommended security headers

Rule security.missing_headers · Security · 50 occurrence(s)

notice Non-ASCII characters in URL path

Rule url.non_ascii · URL · 10 occurrence(s)

notice URL is very long

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

notice Uppercase letters in URL path

Rule url.uppercase · URL · 18 occurrence(s)

Pages (showing 50 of 50)
URLStatusIndexableWordsIn-links
https://9coma.com/about
このサイトについて | 9コマ		 200 yes 13 50
https://9coma.com/privacy
プライバシーポリシー・免責事項 | 9コマ		 200 yes 36 49
https://9coma.com/
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 29
https://9coma.com/9tube
私を構成する9つのYouTube | 9TUBE (9coma)		 200 yes 44 17
https://9coma.com/?clone=FwULC5ICxX1U1AjzApKV
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 20
https://9coma.com/?clone=IOoG1K8r17Lsrp99soaR
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 20
https://9coma.com/?clone=dvmhb9ooX8Z0y1u32Jyl
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 20
https://9coma.com/?clone=pONMMKfujpeQWAHdfmqO
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 20
https://9coma.com/?clone=zQHLJ2aJglbJ1cpKMUHT
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 20
https://9coma.com/?clone=bBAb22yQWEgChTN0pvCA
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 23
https://9coma.com/list/bBAb22yQWEgChTN0pvCA
私を構成する9つのマンガ | 9コマ		 200 yes 96 22
https://9coma.com/list/FwULC5ICxX1U1AjzApKV
inexistentmaを構成する9つのマンガ | 9コマ		 200 yes 103 19
https://9coma.com/list/IOoG1K8r17Lsrp99soaR
私を構成する9つのマンガ | 9コマ		 200 yes 105 19
https://9coma.com/list/dvmhb9ooX8Z0y1u32Jyl
現人神を構成する9つのマンガ | 9コマ		 200 yes 106 19
https://9coma.com/list/pONMMKfujpeQWAHdfmqO
丧失神力之人を構成する9つのマンガ | 9コマ		 200 yes 103 19
https://9coma.com/list/zQHLJ2aJglbJ1cpKMUHT
私を構成する9つのマンガ | 9コマ		 200 yes 105 19
https://9coma.com/lists
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 494 18
https://9coma.com/author/CLAMP
CLAMP先生の作品とみんなの9コマ | 9コマ		 200 yes 352 2
https://9coma.com/author/%E3%81%82%E3%82%8A%E3%81%84%E3%82%81%E3%82%81%E3%81%93
ありいめめこ先生の作品とみんなの9コマ | 9コマ		 200 yes 55 1
https://9coma.com/author/%E3%81%8A%E3%81%8A%E3%81%B0%E3%82%84%E3%81%97%E3%81%BF%E3%82%86%E3%81%8D
おおばやしみゆき先生の作品とみんなの9コマ | 9コマ		 200 yes 117 1
https://9coma.com/author/%E5%A4%A7%E9%AB%98%20%E5%BF%8D
大高 忍先生の作品とみんなの9コマ | 9コマ		 200 yes 111 1
https://9coma.com/author/%E5%B0%9A%E6%9C%88%E5%9C%B0
尚月地先生の作品とみんなの9コマ | 9コマ		 200 yes 68 1
https://9coma.com/author/%E6%9D%89%E5%B4%8E%E3%80%80%E3%82%86%E3%81%8D%E3%82%8B
杉崎　ゆきる先生の作品とみんなの9コマ | 9コマ		 200 yes 122 1
https://9coma.com/author/%E7%94%B0%E6%9D%91%E7%94%B1%E7%BE%8E
田村由美先生の作品とみんなの9コマ | 9コマ		 200 yes 134 1
https://9coma.com/author/%E7%A8%AE%E6%9D%91%E6%9C%89%E8%8F%9C
種村有菜先生の作品とみんなの9コマ | 9コマ		 200 yes 127 1
https://9coma.com/author/%E7%AF%A0%E5%8E%9F%E5%8D%83%E7%B5%B5
篠原千絵先生の作品とみんなの9コマ | 9コマ		 200 yes 123 1
https://9coma.com/?clone=3CBoLg8OdVHkxsTBaGMJ
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/?clone=8Av4LYqbTOui1DngvjCN
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/?clone=ATu6E4cPpCPpHn2nnzoN
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/?clone=DlwJOKfB89g9Pv07V6rW
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/?clone=P0uln8zkWUrOCOGqUN6K
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/?clone=QC9zvIG6wfFy3cOb0dYP
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/?clone=Z0U8qLZfmlrp71oVT8cr
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/?clone=liKUY7FBRJDTRhjmVsp9
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/?clone=xKYsXdNVwdBnUax91fHY
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/?clone=ywpyBLVkvko35ZzrIlty
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/?clone=4E0P2LYwvW7rQrDQleXk
私を構成する9つのマンガ | 9コマ（9coma / 9koma）		 200 yes 70 2
https://9coma.com/list/3CBoLg8OdVHkxsTBaGMJ
きゅてらを構成する9つのマンガ | 9コマ		 200 yes 105 1
https://9coma.com/list/4E0P2LYwvW7rQrDQleXk
オレを構成する9つのマンガ | 9コマ		 200 yes 111 1
https://9coma.com/list/8Av4LYqbTOui1DngvjCN
私を構成する9つのマンガ | 9コマ		 200 yes 103 1
https://9coma.com/list/ATu6E4cPpCPpHn2nnzoN
私を構成する9つのマンガ | 9コマ		 200 yes 83 1
https://9coma.com/list/DlwJOKfB89g9Pv07V6rW
しっぽを構成する9つのマンガ | 9コマ		 200 yes 101 1
https://9coma.com/list/P0uln8zkWUrOCOGqUN6K
inexistentmaを構成する9つのマンガ | 9コマ		 200 yes 103 1
https://9coma.com/list/QC9zvIG6wfFy3cOb0dYP
私を構成する9つのマンガ | 9コマ		 200 yes 62 1
https://9coma.com/list/Z0U8qLZfmlrp71oVT8cr
おはようを構成する9つのマンガ | 9コマ		 200 yes 107 1
https://9coma.com/list/liKUY7FBRJDTRhjmVsp9
私を構成する9つのマンガ | 9コマ		 200 yes 62 1
https://9coma.com/list/xKYsXdNVwdBnUax91fHY
すだちを構成する9つのマンガ | 9コマ		 200 yes 99 1
https://9coma.com/list/ywpyBLVkvko35ZzrIlty
inexistentmaを構成する9つのマンガ | 9コマ		 200 yes 103 1
https://9coma.com/author/%E5%AF%8C%E5%A3%AB%E9%98%B2%E4%BA%BA/%E5%A4%96%E5%B2%A1%E9%A6%AC%E9%AA%A8
404: This page could not be found.		 404 no 13 1
https://9coma.com/author/%E5%B0%BE%E7%BE%8A%20%E8%8B%B1/%E4%B8%AD%E6%9D%91%20%E9%A2%AF%E5%B8%8C/%E3%82%86%E3%81%8D%20%E5%93%89
404: This page could not be found.		 404 no 13 1

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