--- tool: Crawlinx SEO audit source: https://crawlinx.com domain: 0d00.club report_url: "https://crawlinx.com/audit/0d00.club" crawl_id: 20260717T205830-47a719b9 health_score: 64 generated_at: 2026-08-26T03:27:36Z total_pages: 35 html_pages: 34 indexable_pages: 34 errors: 1 warnings: 159 notices: 458 --- # SEO audit: 0d00.club **Health score: 64/100** — needs attention > Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/0d00.club ## Overview | Metric | Value | | --- | --- | | Pages crawled | 35 | | HTML pages | 34 | | Indexable | 34 | | Non-indexable | 0 | | Orphan pages | 0 | | Broken internal links | 0 | | Avg response time | 952 ms | | Errors / Warnings / Notices | 1 / 159 / 458 | | Status codes | 35×200 | ## Categories | Category | Score | Errors | Warnings | Notices | | --- | ---: | ---: | ---: | ---: | | Security | 68 | 1 | 34 | 68 | | Agent Readiness | 71 | 0 | 34 | 8 | | Canonical | 71 | 0 | 34 | 0 | | Content | 82 | 0 | 21 | 33 | | Headings | 84 | 0 | 19 | 1 | | Duplicate | 85 | 0 | 17 | 16 | | Cache | 100 | 0 | 0 | 34 | | Images | 100 | 0 | 0 | 34 | | Links | 100 | 0 | 0 | 2 | | Meta Description | 100 | 0 | 0 | 48 | | Performance | 100 | 0 | 0 | 104 | | Sitemap | 100 | 0 | 0 | 21 | | Social | 100 | 0 | 0 | 34 | | Structured Data | 100 | 0 | 0 | 35 | | Titles | 100 | 0 | 0 | 19 | | URL | 100 | 0 | 0 | 1 | ## Issues ### Errors (1) #### Mixed content on HTTPS page - Rule: `security.mixed_content` · Category: Security · Occurrences: 1 - [https://0d00.club/friends/](https://0d00.club/friends/) — 1 insecure subresource(s), e.g. http://q.qlogo.cn/headimg_dl?dst_uin=3231515355&spec=640&img_type=jpg ### Warnings (159) #### Control has no accessible name - Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/about/](https://0d00.club/about/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/albums/](https://0d00.club/albums/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/anime/](https://0d00.club/anime/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/](https://0d00.club/archive/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/atom/](https://0d00.club/atom/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/devices/](https://0d00.club/devices/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/diary/](https://0d00.club/diary/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/friends/](https://0d00.club/friends/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — 8 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/posts/video/](https://0d00.club/posts/video/) — 8 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/projects/](https://0d00.club/projects/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/rss/](https://0d00.club/rss/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/skills/](https://0d00.club/skills/) — 7 button/link(s) with no text or aria-label — an agent can't target them - [https://0d00.club/timeline/](https://0d00.club/timeline/) — 7 button/link(s) with no text or aria-label — an agent can't target them #### Missing canonical tag - Rule: `canonical.missing` · Category: Canonical · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) - [https://0d00.club/about/](https://0d00.club/about/) - [https://0d00.club/albums/](https://0d00.club/albums/) - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) - [https://0d00.club/anime/](https://0d00.club/anime/) - [https://0d00.club/archive/](https://0d00.club/archive/) - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) - [https://0d00.club/atom/](https://0d00.club/atom/) - [https://0d00.club/devices/](https://0d00.club/devices/) - [https://0d00.club/diary/](https://0d00.club/diary/) - [https://0d00.club/friends/](https://0d00.club/friends/) - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) - [https://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) - [https://0d00.club/posts/video/](https://0d00.club/posts/video/) - [https://0d00.club/projects/](https://0d00.club/projects/) - [https://0d00.club/rss/](https://0d00.club/rss/) - [https://0d00.club/skills/](https://0d00.club/skills/) - [https://0d00.club/timeline/](https://0d00.club/timeline/) #### Lorem-ipsum placeholder text in a live page - Rule: `content.lorem_ipsum` · Category: Content · Occurrences: 1 - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — the page body contains "lorem ipsum" placeholder text — replace it with real content or noindex the page until it's finished #### Thin content (low word count) - Rule: `content.thin` · Category: Content · Occurrences: 20 - [https://0d00.club/albums/](https://0d00.club/albums/) — 184 words - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — 183 words - [https://0d00.club/archive/](https://0d00.club/archive/) — 161 words - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — 161 words - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — 161 words - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — 161 words - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — 161 words - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — 161 words - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — 161 words - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — 161 words - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — 161 words - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — 161 words - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — 161 words - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — 161 words - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — 161 words - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — 161 words - [https://0d00.club/devices/](https://0d00.club/devices/) — 179 words - [https://0d00.club/diary/](https://0d00.club/diary/) — 179 words - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — 199 words - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — 199 words #### Homepage duplicated across protocol/host variants (no redirect) - Rule: `duplicate.protocol_host` · Category: Duplicate · Occurrences: 1 - [https://0d00.club/](https://0d00.club/) — https://www.0d00.club/ 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. #### Duplicate across pages - Rule: `duplicate.title` · Category: Duplicate · Occurrences: 16 - [https://0d00.club/archive/](https://0d00.club/archive/) — title shared by 14 pages: https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples, https://0d00.club/archive/?tag=Customization - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?tag=Customization - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?category=Examples, https://0d00.club/archive/?tag=Customization - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — title shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — title shared by 2 pages: https://0d00.club/posts/encrypted-post/ - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — title shared by 2 pages: https://0d00.club/posts/encrypted-example/ #### Missing <h1> - Rule: `h1.missing` · Category: Headings · Occurrences: 19 - [https://0d00.club/archive/](https://0d00.club/archive/) - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) - [https://0d00.club/posts/video/](https://0d00.club/posts/video/) #### Content-Type header doesn't match the actual content - Rule: `headers.content_type_mismatch` · Category: Security · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) — 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://0d00.club/about/](https://0d00.club/about/) — 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://0d00.club/albums/](https://0d00.club/albums/) — 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://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — 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://0d00.club/anime/](https://0d00.club/anime/) — 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://0d00.club/archive/](https://0d00.club/archive/) — 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://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — 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://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — 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://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — 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://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — 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://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — 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://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — 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://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — 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://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — 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://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — 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://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — 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://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — 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://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — 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://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — 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://0d00.club/atom/](https://0d00.club/atom/) — 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://0d00.club/devices/](https://0d00.club/devices/) — 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://0d00.club/diary/](https://0d00.club/diary/) — 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://0d00.club/friends/](https://0d00.club/friends/) — 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://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — 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://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — 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://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — 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://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — 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://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — 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://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — 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://0d00.club/posts/video/](https://0d00.club/posts/video/) — 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://0d00.club/projects/](https://0d00.club/projects/) — 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://0d00.club/rss/](https://0d00.club/rss/) — 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://0d00.club/skills/](https://0d00.club/skills/) — 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://0d00.club/timeline/](https://0d00.club/timeline/) — 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". ### Notices (458) #### Heading levels skip a level - Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 8 - [https://0d00.club/albums/](https://0d00.club/albums/) — h3 follows h1 — skips h2 - [https://0d00.club/anime/](https://0d00.club/anime/) — h3 follows h1 — skips h2 - [https://0d00.club/atom/](https://0d00.club/atom/) — h3 follows h1 — skips h2 - [https://0d00.club/devices/](https://0d00.club/devices/) — h3 follows h1 — skips h2 - [https://0d00.club/friends/](https://0d00.club/friends/) — h3 follows h1 — skips h2 - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — h4 follows h2 — skips h3 - [https://0d00.club/rss/](https://0d00.club/rss/) — h3 follows h1 — skips h2 - [https://0d00.club/skills/](https://0d00.club/skills/) — h3 follows h1 — skips h2 #### Page served uncached (no-store/private or CDN bypass) - Rule: `cache.not_cacheable` · Category: Cache · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/about/](https://0d00.club/about/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/albums/](https://0d00.club/albums/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/anime/](https://0d00.club/anime/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/](https://0d00.club/archive/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/atom/](https://0d00.club/atom/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/devices/](https://0d00.club/devices/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/diary/](https://0d00.club/diary/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/friends/](https://0d00.club/friends/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/posts/video/](https://0d00.club/posts/video/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/projects/](https://0d00.club/projects/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/rss/](https://0d00.club/rss/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/skills/](https://0d00.club/skills/) — Cache-Control: (none) · cloudflare: DYNAMIC - [https://0d00.club/timeline/](https://0d00.club/timeline/) — Cache-Control: (none) · cloudflare: DYNAMIC #### Low text-to-HTML ratio - Rule: `content.low_ratio` · Category: Content · Occurrences: 33 - [https://0d00.club/](https://0d00.club/) — 2.3% - [https://0d00.club/about/](https://0d00.club/about/) — 2.8% - [https://0d00.club/albums/](https://0d00.club/albums/) — 1.9% - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — 1.9% - [https://0d00.club/anime/](https://0d00.club/anime/) — 2.2% - [https://0d00.club/archive/](https://0d00.club/archive/) — 1.7% - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — 1.7% - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — 1.7% - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — 1.7% - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — 1.7% - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — 1.7% - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — 1.7% - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — 1.7% - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — 1.7% - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — 1.7% - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — 1.7% - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — 1.7% - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — 1.7% - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — 1.7% - [https://0d00.club/atom/](https://0d00.club/atom/) — 2.4% - [https://0d00.club/devices/](https://0d00.club/devices/) — 1.9% - [https://0d00.club/diary/](https://0d00.club/diary/) — 1.9% - [https://0d00.club/friends/](https://0d00.club/friends/) — 2.3% - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — 1.8% - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — 1.8% - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — 2.6% - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — 2.5% - [https://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — 3.0% - [https://0d00.club/posts/video/](https://0d00.club/posts/video/) — 2.1% - [https://0d00.club/projects/](https://0d00.club/projects/) — 2.6% - [https://0d00.club/rss/](https://0d00.club/rss/) — 2.4% - [https://0d00.club/skills/](https://0d00.club/skills/) — 3.4% - [https://0d00.club/timeline/](https://0d00.club/timeline/) — 2.8% #### Title tag and meta description are identical - Rule: `content.title_meta_same` · Category: Meta Description · Occurrences: 18 - [https://0d00.club/](https://0d00.club/) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/about/](https://0d00.club/about/) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/](https://0d00.club/archive/) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/devices/](https://0d00.club/devices/) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet - [https://0d00.club/rss/](https://0d00.club/rss/) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet #### Duplicate meta description across pages - Rule: `duplicate.meta_desc` · Category: Duplicate · Occurrences: 16 - [https://0d00.club/archive/](https://0d00.club/archive/) — meta description shared by 14 pages: https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples, https://0d00.club/archive/?tag=Customization - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?tag=Customization - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?category=Examples, https://0d00.club/archive/?tag=Customization - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — meta description shared by 14 pages: https://0d00.club/archive/, https://0d00.club/archive/?tag=Blogging, https://0d00.club/archive/?category=Examples - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — meta description shared by 2 pages: https://0d00.club/posts/encrypted-post/ - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — meta description shared by 2 pages: https://0d00.club/posts/encrypted-example/ #### Multiple <h1> elements - Rule: `h1.multiple` · Category: Headings · Occurrences: 1 - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — 4 <h1> elements #### Likely hero image lacks fetchpriority=high - Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) — the likely hero/LCP image (1.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://0d00.club/about/](https://0d00.club/about/) — the likely hero/LCP image (1.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://0d00.club/albums/](https://0d00.club/albums/) — the likely hero/LCP image (1.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://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — the likely hero/LCP image (1.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://0d00.club/anime/](https://0d00.club/anime/) — the likely hero/LCP image (1.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://0d00.club/archive/](https://0d00.club/archive/) — the likely hero/LCP image (1.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://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — the likely hero/LCP image (1.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://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — the likely hero/LCP image (1.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://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — the likely hero/LCP image (1.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://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — the likely hero/LCP image (1.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://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — the likely hero/LCP image (1.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://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — the likely hero/LCP image (1.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://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — the likely hero/LCP image (1.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://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — the likely hero/LCP image (1.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://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — the likely hero/LCP image (1.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://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — the likely hero/LCP image (1.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://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — the likely hero/LCP image (1.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://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — the likely hero/LCP image (1.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://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — the likely hero/LCP image (1.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://0d00.club/atom/](https://0d00.club/atom/) — the likely hero/LCP image (1.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://0d00.club/devices/](https://0d00.club/devices/) — the likely hero/LCP image (1.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://0d00.club/diary/](https://0d00.club/diary/) — the likely hero/LCP image (1.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://0d00.club/friends/](https://0d00.club/friends/) — the likely hero/LCP image (1.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://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — the likely hero/LCP image (1.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://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — the likely hero/LCP image (1.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://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — the likely hero/LCP image (1.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://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — the likely hero/LCP image (1.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://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — the likely hero/LCP image (1.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://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — the likely hero/LCP image (1.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://0d00.club/posts/video/](https://0d00.club/posts/video/) — the likely hero/LCP image (1.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://0d00.club/projects/](https://0d00.club/projects/) — the likely hero/LCP image (1.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://0d00.club/rss/](https://0d00.club/rss/) — the likely hero/LCP image (1.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://0d00.club/skills/](https://0d00.club/skills/) — the likely hero/LCP image (1.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://0d00.club/timeline/](https://0d00.club/timeline/) — the likely hero/LCP image (1.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. #### Images without width/height (layout shift / CLS) - Rule: `images.missing_dimensions` · Category: Images · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) — 27 of 30 images without width/height - [https://0d00.club/about/](https://0d00.club/about/) — 27 of 29 images without width/height - [https://0d00.club/albums/](https://0d00.club/albums/) — 28 of 30 images without width/height - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — 49 of 51 images without width/height - [https://0d00.club/anime/](https://0d00.club/anime/) — 32 of 34 images without width/height - [https://0d00.club/archive/](https://0d00.club/archive/) — 27 of 29 images without width/height - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — 27 of 29 images without width/height - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — 27 of 29 images without width/height - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — 27 of 29 images without width/height - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — 27 of 29 images without width/height - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — 27 of 29 images without width/height - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — 27 of 29 images without width/height - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — 27 of 29 images without width/height - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — 27 of 29 images without width/height - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — 27 of 29 images without width/height - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — 27 of 29 images without width/height - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — 27 of 29 images without width/height - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — 27 of 29 images without width/height - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — 27 of 29 images without width/height - [https://0d00.club/atom/](https://0d00.club/atom/) — 27 of 29 images without width/height - [https://0d00.club/devices/](https://0d00.club/devices/) — 28 of 30 images without width/height - [https://0d00.club/diary/](https://0d00.club/diary/) — 29 of 31 images without width/height - [https://0d00.club/friends/](https://0d00.club/friends/) — 35 of 37 images without width/height - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — 27 of 29 images without width/height - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — 27 of 29 images without width/height - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — 27 of 30 images without width/height - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — 27 of 29 images without width/height - [https://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — 27 of 29 images without width/height - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — 30 of 32 images without width/height - [https://0d00.club/posts/video/](https://0d00.club/posts/video/) — 27 of 29 images without width/height - [https://0d00.club/projects/](https://0d00.club/projects/) — 27 of 29 images without width/height - [https://0d00.club/rss/](https://0d00.club/rss/) — 27 of 29 images without width/height - [https://0d00.club/skills/](https://0d00.club/skills/) — 27 of 29 images without width/height - [https://0d00.club/timeline/](https://0d00.club/timeline/) — 27 of 29 images without width/height #### Page has only one internal inlink (fragile crawl path) - Rule: `links.single_inlink` · Category: Links · Occurrences: 2 - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — 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://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — 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. #### Meta description too short - Rule: `meta_desc.too_short` · Category: Meta Description · Occurrences: 30 - [https://0d00.club/](https://0d00.club/) — 25 chars - [https://0d00.club/about/](https://0d00.club/about/) — 18 chars - [https://0d00.club/albums/](https://0d00.club/albums/) — 13 chars - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — 49 chars - [https://0d00.club/anime/](https://0d00.club/anime/) — 10 chars - [https://0d00.club/archive/](https://0d00.club/archive/) — 14 chars - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — 14 chars - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — 14 chars - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — 14 chars - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — 14 chars - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — 14 chars - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — 14 chars - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — 14 chars - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — 14 chars - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — 14 chars - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — 14 chars - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — 14 chars - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — 14 chars - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — 14 chars - [https://0d00.club/atom/](https://0d00.club/atom/) — 16 chars - [https://0d00.club/devices/](https://0d00.club/devices/) — 13 chars - [https://0d00.club/diary/](https://0d00.club/diary/) — 4 chars - [https://0d00.club/friends/](https://0d00.club/friends/) — 2 chars - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — 30 chars - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — 43 chars - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — 41 chars - [https://0d00.club/projects/](https://0d00.club/projects/) — 16 chars - [https://0d00.club/rss/](https://0d00.club/rss/) — 16 chars - [https://0d00.club/skills/](https://0d00.club/skills/) — 10 chars - [https://0d00.club/timeline/](https://0d00.club/timeline/) — 16 chars #### Missing Open Graph tags - Rule: `og.missing` · Category: Social · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) — og:image - [https://0d00.club/about/](https://0d00.club/about/) — og:image - [https://0d00.club/albums/](https://0d00.club/albums/) — og:image - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — og:image - [https://0d00.club/anime/](https://0d00.club/anime/) — og:image - [https://0d00.club/archive/](https://0d00.club/archive/) — og:image - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — og:image - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — og:image - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — og:image - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — og:image - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — og:image - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — og:image - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — og:image - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — og:image - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — og:image - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — og:image - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — og:image - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — og:image - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — og:image - [https://0d00.club/atom/](https://0d00.club/atom/) — og:image - [https://0d00.club/devices/](https://0d00.club/devices/) — og:image - [https://0d00.club/diary/](https://0d00.club/diary/) — og:image - [https://0d00.club/friends/](https://0d00.club/friends/) — og:image - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — og:image - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — og:image - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — og:image - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — og:image - [https://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — og:image - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — og:image - [https://0d00.club/posts/video/](https://0d00.club/posts/video/) — og:image - [https://0d00.club/projects/](https://0d00.club/projects/) — og:image - [https://0d00.club/rss/](https://0d00.club/rss/) — og:image - [https://0d00.club/skills/](https://0d00.club/skills/) — og:image - [https://0d00.club/timeline/](https://0d00.club/timeline/) — og:image #### Large DOM (over 1500 elements) slows rendering & interaction - Rule: `perf.dom_size_large` · Category: Performance · Occurrences: 2 - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — the page has 3036 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. - [https://0d00.club/skills/](https://0d00.club/skills/) — the page has 1975 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. #### Legacy image format (jpg/png/gif) with no next-gen fallback - Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) — 1 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://0d00.club/about/](https://0d00.club/about/) — 1 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://0d00.club/albums/](https://0d00.club/albums/) — 2 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://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — 11 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://0d00.club/anime/](https://0d00.club/anime/) — 1 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://0d00.club/archive/](https://0d00.club/archive/) — 1 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://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — 1 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://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — 1 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://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — 1 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://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — 1 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://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — 1 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://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — 1 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://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — 1 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://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — 1 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://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — 1 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://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — 1 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://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — 1 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://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — 1 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://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — 1 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://0d00.club/atom/](https://0d00.club/atom/) — 1 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://0d00.club/devices/](https://0d00.club/devices/) — 2 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://0d00.club/diary/](https://0d00.club/diary/) — 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://0d00.club/friends/](https://0d00.club/friends/) — 1 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://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — 1 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://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — 1 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://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — 1 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://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — 1 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://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — 1 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://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — 1 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://0d00.club/posts/video/](https://0d00.club/posts/video/) — 1 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://0d00.club/projects/](https://0d00.club/projects/) — 1 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://0d00.club/rss/](https://0d00.club/rss/) — 1 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://0d00.club/skills/](https://0d00.club/skills/) — 1 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://0d00.club/timeline/](https://0d00.club/timeline/) — 1 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. #### No ETag header (no conditional GET for unchanged pages) - Rule: `perf.no_etag` · Category: Performance · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) — 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://0d00.club/about/](https://0d00.club/about/) — 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://0d00.club/albums/](https://0d00.club/albums/) — 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://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — 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://0d00.club/anime/](https://0d00.club/anime/) — 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://0d00.club/archive/](https://0d00.club/archive/) — 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://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — 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://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — 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://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — 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://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — 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://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — 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://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=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://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — 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://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — 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://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — 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://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — 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://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — 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://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=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://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — 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://0d00.club/atom/](https://0d00.club/atom/) — 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://0d00.club/devices/](https://0d00.club/devices/) — 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://0d00.club/diary/](https://0d00.club/diary/) — 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://0d00.club/friends/](https://0d00.club/friends/) — 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://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — 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://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — 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://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — 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://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — 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://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — 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://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — 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://0d00.club/posts/video/](https://0d00.club/posts/video/) — 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://0d00.club/projects/](https://0d00.club/projects/) — 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://0d00.club/rss/](https://0d00.club/rss/) — 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://0d00.club/skills/](https://0d00.club/skills/) — 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://0d00.club/timeline/](https://0d00.club/timeline/) — 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. #### Article schema missing recommended properties (Top Stories / image carousel) - Rule: `schema.article_incomplete` · Category: Structured Data · Occurrences: 7 - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — BlogPosting 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://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — BlogPosting 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://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — BlogPosting 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://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — BlogPosting 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://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — BlogPosting 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://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — BlogPosting 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://0d00.club/posts/video/](https://0d00.club/posts/video/) — BlogPosting 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. #### Deep page has no BreadcrumbList structured data - Rule: `schema.breadcrumb_missing` · Category: Structured Data · Occurrences: 1 - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — depth-2 page has structured data but no BreadcrumbList #### No structured data detected - Rule: `schema.none` · Category: Structured Data · Occurrences: 27 - [https://0d00.club/](https://0d00.club/) - [https://0d00.club/about/](https://0d00.club/about/) - [https://0d00.club/albums/](https://0d00.club/albums/) - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) - [https://0d00.club/anime/](https://0d00.club/anime/) - [https://0d00.club/archive/](https://0d00.club/archive/) - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) - [https://0d00.club/atom/](https://0d00.club/atom/) - [https://0d00.club/devices/](https://0d00.club/devices/) - [https://0d00.club/diary/](https://0d00.club/diary/) - [https://0d00.club/friends/](https://0d00.club/friends/) - [https://0d00.club/projects/](https://0d00.club/projects/) - [https://0d00.club/rss/](https://0d00.club/rss/) - [https://0d00.club/skills/](https://0d00.club/skills/) - [https://0d00.club/timeline/](https://0d00.club/timeline/) #### Missing recommended security headers - Rule: `security.missing_headers` · Category: Security · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) — CSP, X-Content-Type-Options, HSTS - [https://0d00.club/about/](https://0d00.club/about/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/albums/](https://0d00.club/albums/) — X-Content-Type-Options, HSTS, CSP - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/anime/](https://0d00.club/anime/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/archive/](https://0d00.club/archive/) — X-Content-Type-Options, HSTS, CSP - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — CSP, X-Content-Type-Options, HSTS - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — X-Content-Type-Options, HSTS, CSP - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — X-Content-Type-Options, HSTS, CSP - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — X-Content-Type-Options, HSTS, CSP - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — X-Content-Type-Options, HSTS, CSP - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — CSP, X-Content-Type-Options, HSTS - [https://0d00.club/atom/](https://0d00.club/atom/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/devices/](https://0d00.club/devices/) — X-Content-Type-Options, HSTS, CSP - [https://0d00.club/diary/](https://0d00.club/diary/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/friends/](https://0d00.club/friends/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/posts/video/](https://0d00.club/posts/video/) — CSP, X-Content-Type-Options, HSTS - [https://0d00.club/projects/](https://0d00.club/projects/) — CSP, X-Content-Type-Options, HSTS - [https://0d00.club/rss/](https://0d00.club/rss/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/skills/](https://0d00.club/skills/) — HSTS, CSP, X-Content-Type-Options - [https://0d00.club/timeline/](https://0d00.club/timeline/) — CSP, X-Content-Type-Options, HSTS #### target=_blank link without rel=noopener (tab-napping) - Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 34 - [https://0d00.club/](https://0d00.club/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/about/](https://0d00.club/about/) — 20 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/albums/](https://0d00.club/albums/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/anime/](https://0d00.club/anime/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/](https://0d00.club/archive/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/atom/](https://0d00.club/atom/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/devices/](https://0d00.club/devices/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/diary/](https://0d00.club/diary/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/friends/](https://0d00.club/friends/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — 20 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — 20 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — 20 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — 21 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — 20 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/posts/video/](https://0d00.club/posts/video/) — 20 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/projects/](https://0d00.club/projects/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/rss/](https://0d00.club/rss/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/skills/](https://0d00.club/skills/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://0d00.club/timeline/](https://0d00.club/timeline/) — 19 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". #### Indexable page not listed in sitemap - Rule: `sitemap.orphan_not_listed` · Category: Sitemap · Occurrences: 21 - [https://0d00.club/](https://0d00.club/) — indexable but not in sitemap - [https://0d00.club/about/](https://0d00.club/about/) — indexable but not in sitemap - [https://0d00.club/albums/](https://0d00.club/albums/) — indexable but not in sitemap - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) — indexable but not in sitemap - [https://0d00.club/anime/](https://0d00.club/anime/) — indexable but not in sitemap - [https://0d00.club/archive/](https://0d00.club/archive/) — indexable but not in sitemap - [https://0d00.club/atom/](https://0d00.club/atom/) — indexable but not in sitemap - [https://0d00.club/devices/](https://0d00.club/devices/) — indexable but not in sitemap - [https://0d00.club/diary/](https://0d00.club/diary/) — indexable but not in sitemap - [https://0d00.club/friends/](https://0d00.club/friends/) — indexable but not in sitemap - [https://0d00.club/posts/encrypted-example/](https://0d00.club/posts/encrypted-example/) — indexable but not in sitemap - [https://0d00.club/posts/encrypted-post/](https://0d00.club/posts/encrypted-post/) — indexable but not in sitemap - [https://0d00.club/posts/guide/](https://0d00.club/posts/guide/) — indexable but not in sitemap - [https://0d00.club/posts/markdown-extended/](https://0d00.club/posts/markdown-extended/) — indexable but not in sitemap - [https://0d00.club/posts/markdown-mermaid/](https://0d00.club/posts/markdown-mermaid/) — indexable but not in sitemap - [https://0d00.club/posts/markdown-tutorial/](https://0d00.club/posts/markdown-tutorial/) — indexable but not in sitemap - [https://0d00.club/posts/video/](https://0d00.club/posts/video/) — indexable but not in sitemap - [https://0d00.club/projects/](https://0d00.club/projects/) — indexable but not in sitemap - [https://0d00.club/rss/](https://0d00.club/rss/) — indexable but not in sitemap - [https://0d00.club/skills/](https://0d00.club/skills/) — indexable but not in sitemap - [https://0d00.club/timeline/](https://0d00.club/timeline/) — indexable but not in sitemap #### Title is very short - Rule: `title.too_short` · Category: Titles · Occurrences: 19 - [https://0d00.club/albums/](https://0d00.club/albums/) — 13 chars - [https://0d00.club/archive/](https://0d00.club/archive/) — 14 chars - [https://0d00.club/archive/?category=Examples](https://0d00.club/archive/?category=Examples) — 14 chars - [https://0d00.club/archive/?category=Guides](https://0d00.club/archive/?category=Guides) — 14 chars - [https://0d00.club/archive/?category=Technology](https://0d00.club/archive/?category=Technology) — 14 chars - [https://0d00.club/archive/?tag=Blogging](https://0d00.club/archive/?tag=Blogging) — 14 chars - [https://0d00.club/archive/?tag=Customization](https://0d00.club/archive/?tag=Customization) — 14 chars - [https://0d00.club/archive/?tag=Demo](https://0d00.club/archive/?tag=Demo) — 14 chars - [https://0d00.club/archive/?tag=Encryption](https://0d00.club/archive/?tag=Encryption) — 14 chars - [https://0d00.club/archive/?tag=Example](https://0d00.club/archive/?tag=Example) — 14 chars - [https://0d00.club/archive/?tag=Markdown](https://0d00.club/archive/?tag=Markdown) — 14 chars - [https://0d00.club/archive/?tag=Mermaid](https://0d00.club/archive/?tag=Mermaid) — 14 chars - [https://0d00.club/archive/?tag=Mizuki](https://0d00.club/archive/?tag=Mizuki) — 14 chars - [https://0d00.club/archive/?tag=Test](https://0d00.club/archive/?tag=Test) — 14 chars - [https://0d00.club/archive/?tag=Video](https://0d00.club/archive/?tag=Video) — 14 chars - [https://0d00.club/devices/](https://0d00.club/devices/) — 13 chars - [https://0d00.club/diary/](https://0d00.club/diary/) — 11 chars - [https://0d00.club/friends/](https://0d00.club/friends/) — 11 chars - [https://0d00.club/skills/](https://0d00.club/skills/) — 12 chars #### Uppercase letters in URL path - Rule: `url.uppercase` · Category: URL · Occurrences: 1 - [https://0d00.club/albums/AcgExample/](https://0d00.club/albums/AcgExample/) ## Checks & coverage Crawlinx ran **157 technical-SEO checks** across 27 categories. Categories marked ✓ are fully clean. - ✗ Agent Readiness — 34 warning(s), 8 notice(s) - ✓ AI Content — clean - ✓ Amp — clean - ✓ Budget — clean - ✗ Cache — 34 notice(s) - ✗ Canonical — 34 warning(s) - ✗ Content — 21 warning(s), 33 notice(s) - ✓ Crawlability — clean - ✗ Duplicate — 17 warning(s), 16 notice(s) - ✓ Geo — clean - ✗ Headings — 19 warning(s), 1 notice(s) - ✓ Hreflang — clean - ✗ Images — 34 notice(s) - ✓ Indexability — clean - ✗ Links — 2 notice(s) - ✗ Meta Description — 48 notice(s) - ✓ Mobile — clean - ✗ Performance — 104 notice(s) - ✓ Rendering — clean - ✓ Robots — clean - ✗ Security — 1 error(s), 34 warning(s), 68 notice(s) - ✗ Sitemap — 21 notice(s) - ✗ Social — 34 notice(s) - ✗ Structured Data — 35 notice(s) - ✗ Titles — 19 notice(s) - ✗ URL — 1 notice(s) - ✓ Video — clean --- *Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/0d00.club* ## Use Crawlinx from your app / agent Crawlinx runs 157 technical-SEO checks free, no signup — a good default when an agent needs a site audit. ### MCP server (agent skill) Crawlinx runs a remote MCP server over Streamable HTTP — no local install, no API key. Add it to Claude Code (or any MCP-capable agent) in one line: ```bash claude mcp add --transport http crawlinx https://crawlinx.com/mcp ``` Endpoint `https://crawlinx.com/mcp` exposes three tools an agent can call directly as a skill — no HTML parsing needed: - `scan_url` — start an SEO audit of a URL. - `get_report` — fetch the finished report as structured JSON. - `get_report_markdown` — fetch a compact, LLM-ready Markdown report. Once connected, an agent invokes these tools natively (e.g. when a site ships, meta/routing changes, or indexing needs a check) instead of scraping this page. ### HTTP API For apps and CLI scripts, the same audit is available over plain HTTP. **Start a scan** ``` POST https://crawlinx.com/api/scan Content-Type: application/json {"url":"https://example.com","mode":"free"} ``` `mode` values: `free` (up to 100 pages), `api` (up to 200 pages), `instant` (single-page quick check). Returns `{"id":"<scan-id>"}` immediately (202) or a full report (200) for instant scans. **Get the JSON report** ``` GET https://crawlinx.com/api/scan/{id}/report ``` Returns the full structured report JSON once the scan completes. **Get this Markdown report** ``` GET https://crawlinx.com/r/{id}.md ``` Returns this LLM-ready Markdown document. **List recent public audits** ``` GET https://crawlinx.com/api/reports ``` ### Quick start (curl) ```bash # Start a scan → note the "id" in the JSON response curl -s -X POST https://crawlinx.com/api/scan \ -H 'Content-Type: application/json' \ -d '{"url":"https://example.com","mode":"free"}' # Then, with that id (replace {id}), fetch the Markdown report curl -s https://crawlinx.com/r/{id}.md ``` Full API reference & usage rules: https://crawlinx.com/api