64
SEO audit for debian.org
Debian -- The Universal Operating System
Health 64/100 (fair) · 50 pages crawled · generated 2026-08-26
Download Markdown report (feed to ChatGPT / Claude / Cursor)Debian is an operating system and a distribution of Free Software. It is maintained and updated through the work of many users who volunteer their time and effort.
50
pages crawled
47
indexable pages
2
errors
257
warnings
287
notices
0
orphan pages
1
broken links
Category breakdown
| Category | Score | Errors | Warnings | Notices |
|---|---|---|---|---|
| Links | 4 | 1 | 157 | 0 |
| Crawlability | 97 | 1 | 1 | 6 |
| Canonical | 72 | 0 | 47 | 0 |
| Meta Description | 72 | 0 | 46 | 1 |
| Mobile | 99 | 0 | 2 | 3 |
| Agent Readiness | 99 | 0 | 1 | 53 |
| Content | 99 | 0 | 1 | 0 |
| Headings | 99 | 0 | 1 | 3 |
| Rendering | 99 | 0 | 1 | 0 |
| Cache | 100 | 0 | 0 | 1 |
| Images | 100 | 0 | 0 | 5 |
| Performance | 100 | 0 | 0 | 14 |
| Security | 100 | 0 | 0 | 48 |
| Social | 100 | 0 | 0 | 94 |
| Structured Data | 100 | 0 | 0 | 46 |
| Titles | 100 | 0 | 0 | 1 |
| URL | 100 | 0 | 0 | 12 |
Findings
Errors (2 rules)
error Broken internal link (target 4xx/5xx)
Rule links.broken_internal · Links · 1 occurrence(s)
- https://www.debian.org/contact — https://www.debian.org/releases/stable/i386/ch05s04 (HTTP 404)
error Client error (4xx) response
Rule status.4xx · Crawlability · 1 occurrence(s)
Warnings (9 rules)
warning Control has no accessible name
Rule agent.control_no_name · Agent Readiness · 1 occurrence(s)
- https://debian.org/ — 8 button/link(s) with no text or aria-label — an agent can't target them
warning Missing canonical tag
Rule canonical.missing · Canonical · 47 occurrence(s)
- https://debian.org/
- https://www.debian.org/CD/vendors
- https://www.debian.org/MailingLists/
- https://www.debian.org/MailingLists/subscribe
- https://www.debian.org/News
- https://www.debian.org/News/2026/20260711
- https://www.debian.org/consultants
- https://www.debian.org/contact
- https://www.debian.org/devel/
- https://www.debian.org/devel/join/
- https://www.debian.org/devel/join/newmaint
- https://www.debian.org/distrib
- https://www.debian.org/distrib/pre-installed
- https://www.debian.org/doc/
- https://www.debian.org/doc/manuals/project-history/
- https://www.debian.org/events/merchandise
- https://www.debian.org/intro/people
- https://www.debian.org/license
- https://www.debian.org/mirror/sponsors
- https://www.debian.org/partners/
- https://www.debian.org/security/
- https://www.debian.org/social_contract
- https://www.debian.org/support
- https://www.debian.org/trademark
- https://www.debian.org/users/
warning Thin content (low word count)
Rule content.thin · Content · 1 occurrence(s)
warning Missing <h1>
Rule h1.missing · Headings · 1 occurrence(s)
warning Internal link points to a redirect
Rule links.redirect_target · Links · 157 occurrence(s)
- https://debian.org/ — https://www.debian.org/ → https://www.debian.org/
- https://debian.org/ — https://www.debian.org/News → https://www.debian.org/News/
- https://debian.org/ — https://www.debian.org/distrib → https://www.debian.org/distrib/
- https://www.debian.org/News — https://www.debian.org/ → https://www.debian.org/
- https://www.debian.org/News — https://www.debian.org/News/ → https://www.debian.org/News/
- https://www.debian.org/News — https://www.debian.org/distrib/ → https://www.debian.org/distrib/
- https://www.debian.org/News — https://www.debian.org/legal → https://www.debian.org/legal/
- https://www.debian.org/News/2026/20260711 — https://www.debian.org/ → https://www.debian.org/
- https://www.debian.org/News/2026/20260711 — https://www.debian.org/News/ → https://www.debian.org/News/
- https://www.debian.org/News/2026/20260711 — https://www.debian.org/distrib/ → https://www.debian.org/distrib/
- https://www.debian.org/News/2026/20260711 — https://www.debian.org/legal → https://www.debian.org/legal/
- https://www.debian.org/News/2026/20260711 — https://www.debian.org/security/2026/dsa-6250 → https://lists.debian.org/.internal/challenge.html?original=%2fdebian-security-announce%2f2026%2fmsg00161.html
- https://www.debian.org/contact — https://www.debian.org/ → https://www.debian.org/
- https://www.debian.org/devel/join/ — https://www.debian.org/ → https://www.debian.org/
- https://www.debian.org/distrib — https://www.debian.org/ → https://www.debian.org/
- https://www.debian.org/distrib — https://www.debian.org/CD/vendors/ → https://www.debian.org/CD/vendors/
- https://www.debian.org/distrib — https://www.debian.org/News/ → https://www.debian.org/News/
- https://www.debian.org/distrib — https://www.debian.org/distrib/ → https://www.debian.org/distrib/
- https://www.debian.org/distrib — https://www.debian.org/legal → https://www.debian.org/legal/
- https://www.debian.org/intro/people — https://www.debian.org/ → https://www.debian.org/
- https://www.debian.org/intro/people — https://www.debian.org/CD/vendors → https://www.debian.org/CD/vendors/
- https://www.debian.org/intro/people — https://www.debian.org/consultants → https://www.debian.org/consultants/
- https://www.debian.org/security/ — https://www.debian.org/ → https://www.debian.org/
- https://www.debian.org/support — https://www.debian.org/ → https://www.debian.org/
- https://www.debian.org/support — https://www.debian.org/consultants/ → https://www.debian.org/consultants/
warning Missing meta description
Rule meta_desc.missing · Meta Description · 46 occurrence(s)
- https://www.debian.org/CD/vendors
- https://www.debian.org/MailingLists/
- https://www.debian.org/MailingLists/subscribe
- https://www.debian.org/News
- https://www.debian.org/News/2026/20260711
- https://www.debian.org/consultants
- https://www.debian.org/contact
- https://www.debian.org/devel/
- https://www.debian.org/devel/join/
- https://www.debian.org/devel/join/newmaint
- https://www.debian.org/distrib
- https://www.debian.org/distrib/pre-installed
- https://www.debian.org/doc/
- https://www.debian.org/doc/manuals/project-history/
- https://www.debian.org/events/merchandise
- https://www.debian.org/international/
- https://www.debian.org/intro/people
- https://www.debian.org/license
- https://www.debian.org/mirror/sponsors
- https://www.debian.org/partners/
- https://www.debian.org/security/
- https://www.debian.org/social_contract
- https://www.debian.org/support
- https://www.debian.org/trademark
- https://www.debian.org/users/
warning Missing viewport meta tag
Rule mobile.viewport_missing · Mobile · 2 occurrence(s)
warning Redirect chain (multiple hops)
Rule redirect.chain · Crawlability · 1 occurrence(s)
- https://www.debian.org/security/2026/dsa-6250 — 2 hops ending at https://lists.debian.org/.internal/challenge.html?original=%2fdebian-security-announce%2f2026%2fmsg00161.html
warning Content only rendered by JavaScript (invisible to non-JS crawlers & AI)
Rule rendering.js_shell · Rendering · 1 occurrence(s)
- https://www.debian.org/security/2026/dsa-6250 — Raw HTML has 0 words and 0 links — this page is built by JavaScript in the browser. Googlebot renders JS but delays it, and most crawlers and AI assistants (ChatGPT, Perplexity, Claude) don't run JavaScript at all, so to them the page looks empty. Server-render or pre-render your main content and navigation.
Notices (17 rules)
notice Heading levels skip a level
Rule agent.heading_skip · Agent Readiness · 7 occurrence(s)
- https://www.debian.org/CD/vendors — h3 follows h1 — skips h2
- https://www.debian.org/MailingLists/subscribe — h3 follows h1 — skips h2
- https://www.debian.org/distrib/pre-installed — h3 follows h1 — skips h2
- https://www.debian.org/doc/manuals/project-history/ — h3 follows h1 — skips h2
- https://www.debian.org/events/ — h3 follows h1 — skips h2
- https://www.debian.org/logos/ — h3 follows h1 — skips h2
- https://www.debian.org/partners/ — h3 follows h1 — skips h2
notice No llms.txt for AI agents
Rule agent.llms_txt_missing · Agent Readiness · 1 occurrence(s)
- https://debian.org/ — no llms.txt found at the site root — add one so AI agents get a curated site summary
notice No main landmark for AI agents
Rule agent.no_main_landmark · Agent Readiness · 45 occurrence(s)
- https://debian.org/ — add a <main> element (or role=main) around the primary content
- https://www.debian.org/CD/vendors — add a <main> element (or role=main) around the primary content
- https://www.debian.org/MailingLists/ — add a <main> element (or role=main) around the primary content
- https://www.debian.org/MailingLists/subscribe — add a <main> element (or role=main) around the primary content
- https://www.debian.org/News — add a <main> element (or role=main) around the primary content
- https://www.debian.org/News/2026/20260711 — add a <main> element (or role=main) around the primary content
- https://www.debian.org/consultants — add a <main> element (or role=main) around the primary content
- https://www.debian.org/contact — add a <main> element (or role=main) around the primary content
- https://www.debian.org/devel/ — add a <main> element (or role=main) around the primary content
- https://www.debian.org/devel/join/ — add a <main> element (or role=main) around the primary content
- https://www.debian.org/devel/join/newmaint — add a <main> element (or role=main) around the primary content
- https://www.debian.org/distrib — add a <main> element (or role=main) around the primary content
- https://www.debian.org/distrib/pre-installed — add a <main> element (or role=main) around the primary content
- https://www.debian.org/doc/ — add a <main> element (or role=main) around the primary content
- https://www.debian.org/doc/manuals/project-history/ — add a <main> element (or role=main) around the primary content
- https://www.debian.org/events/merchandise — add a <main> element (or role=main) around the primary content
- https://www.debian.org/intro/people — add a <main> element (or role=main) around the primary content
- https://www.debian.org/license — add a <main> element (or role=main) around the primary content
- https://www.debian.org/mirror/sponsors — add a <main> element (or role=main) around the primary content
- https://www.debian.org/partners/ — add a <main> element (or role=main) around the primary content
- https://www.debian.org/security/ — add a <main> element (or role=main) around the primary content
- https://www.debian.org/social_contract — add a <main> element (or role=main) around the primary content
- https://www.debian.org/support — add a <main> element (or role=main) around the primary content
- https://www.debian.org/trademark — add a <main> element (or role=main) around the primary content
- https://www.debian.org/users/ — add a <main> element (or role=main) around the primary content
notice Page served uncached (no-store/private or CDN bypass)
Rule cache.not_cacheable · Cache · 1 occurrence(s)
- https://www.debian.org/security/2026/dsa-6250 — Cache-Control: no-store
notice Multiple <h1> elements
Rule h1.multiple · Headings · 3 occurrence(s)
- https://debian.org/ — 4 <h1> elements
- https://www.debian.org/Bugs/Reporting — 4 <h1> elements
- https://www.debian.org/consultants — 54 <h1> elements
notice Missing html lang attribute
Rule i18n.lang_missing · Mobile · 3 occurrence(s)
notice Images without width/height (layout shift / CLS)
Rule images.missing_dimensions · Images · 5 occurrence(s)
- https://debian.org/ — 8 of 16 images without width/height
- https://www.debian.org/Bugs/ — 1 of 2 images without width/height
- https://www.debian.org/doc/manuals/project-history/ — 2 of 2 images without width/height
- https://www.debian.org/doc/manuals/project-history/intro.en.html — 5 of 5 images without width/height
- https://www.debian.org/partners/ — 5 of 19 images without width/height
notice Meta description too long
Rule meta_desc.too_long · Meta Description · 1 occurrence(s)
- https://debian.org/ — 163 chars
notice Missing Open Graph tags
Rule og.missing · Social · 47 occurrence(s)
- https://debian.org/ — og:title, og:description, og:image
- https://www.debian.org/CD/vendors — og:title, og:description, og:image
- https://www.debian.org/MailingLists/ — og:title, og:description, og:image
- https://www.debian.org/MailingLists/subscribe — og:title, og:description, og:image
- https://www.debian.org/News — og:title, og:description, og:image
- https://www.debian.org/News/2026/20260711 — og:title, og:description, og:image
- https://www.debian.org/consultants — og:title, og:description, og:image
- https://www.debian.org/contact — og:title, og:description, og:image
- https://www.debian.org/devel/ — og:title, og:description, og:image
- https://www.debian.org/devel/join/ — og:title, og:description, og:image
- https://www.debian.org/devel/join/newmaint — og:title, og:description, og:image
- https://www.debian.org/distrib — og:title, og:description, og:image
- https://www.debian.org/distrib/pre-installed — og:title, og:description, og:image
- https://www.debian.org/doc/ — og:title, og:description, og:image
- https://www.debian.org/doc/manuals/project-history/ — og:title, og:description, og:image
- https://www.debian.org/events/merchandise — og:title, og:description, og:image
- https://www.debian.org/intro/people — og:title, og:description, og:image
- https://www.debian.org/license — og:title, og:description, og:image
- https://www.debian.org/mirror/sponsors — og:title, og:description, og:image
- https://www.debian.org/partners/ — og:title, og:description, og:image
- https://www.debian.org/security/ — og:title, og:description, og:image
- https://www.debian.org/social_contract — og:title, og:description, og:image
- https://www.debian.org/support — og:title, og:description, og:image
- https://www.debian.org/trademark — og:title, og:description, og:image
- https://www.debian.org/users/ — og:title, og:description, og:image
notice Slow server response
Rule perf.slow_response · Performance · 14 occurrence(s)
- https://www.debian.org/CD/vendors — 3057 ms
- https://www.debian.org/MailingLists/subscribe — 3109 ms
- https://www.debian.org/News — 3016 ms
- https://www.debian.org/code_of_conduct — 3042 ms
- https://www.debian.org/consultants — 3090 ms
- https://www.debian.org/devel/ — 3102 ms
- https://www.debian.org/distrib/pre-installed — 3066 ms
- https://www.debian.org/legal — 3009 ms
- https://www.debian.org/legal/licenses/mit — 3101 ms
- https://www.debian.org/lts/security/dla — 3040 ms
- https://www.debian.org/mirror/ — 3010 ms
- https://www.debian.org/mirror/sponsors — 3035 ms
- https://www.debian.org/security/ — 3106 ms
- https://www.debian.org/security/2026/dsa-6250 — 3043 ms
notice URL redirects to another URL
Rule redirect.single · Crawlability · 6 occurrence(s)
- https://debian.org/ — redirects to https://www.debian.org/
- https://www.debian.org/CD/vendors — redirects to https://www.debian.org/CD/vendors/
- https://www.debian.org/News — redirects to https://www.debian.org/News/
- https://www.debian.org/consultants — redirects to https://www.debian.org/consultants/
- https://www.debian.org/distrib — redirects to https://www.debian.org/distrib/
- https://www.debian.org/legal — redirects to https://www.debian.org/legal/
notice No structured data detected
Rule schema.none · Structured Data · 46 occurrence(s)
- https://debian.org/
- https://www.debian.org/CD/vendors
- https://www.debian.org/MailingLists/
- https://www.debian.org/MailingLists/subscribe
- https://www.debian.org/News
- https://www.debian.org/News/2026/20260711
- https://www.debian.org/consultants
- https://www.debian.org/contact
- https://www.debian.org/devel/
- https://www.debian.org/devel/join/
- https://www.debian.org/devel/join/newmaint
- https://www.debian.org/distrib
- https://www.debian.org/distrib/pre-installed
- https://www.debian.org/doc/
- https://www.debian.org/doc/manuals/project-history/
- https://www.debian.org/events/merchandise
- https://www.debian.org/intro/people
- https://www.debian.org/license
- https://www.debian.org/mirror/sponsors
- https://www.debian.org/partners/
- https://www.debian.org/security/
- https://www.debian.org/social_contract
- https://www.debian.org/support
- https://www.debian.org/trademark
- https://www.debian.org/users/
notice Missing recommended security headers
Rule security.missing_headers · Security · 48 occurrence(s)
- https://debian.org/ — CSP
- https://www.debian.org/CD/vendors — CSP
- https://www.debian.org/MailingLists/ — CSP
- https://www.debian.org/MailingLists/subscribe — CSP
- https://www.debian.org/News — CSP
- https://www.debian.org/News/2026/20260711 — CSP
- https://www.debian.org/consultants — CSP
- https://www.debian.org/contact — CSP
- https://www.debian.org/devel/ — CSP
- https://www.debian.org/devel/join/ — CSP
- https://www.debian.org/devel/join/newmaint — CSP
- https://www.debian.org/distrib — CSP
- https://www.debian.org/distrib/pre-installed — CSP
- https://www.debian.org/doc/ — CSP
- https://www.debian.org/doc/manuals/project-history/ — CSP
- https://www.debian.org/events/merchandise — CSP
- https://www.debian.org/intro/people — CSP
- https://www.debian.org/license — CSP
- https://www.debian.org/mirror/sponsors — CSP
- https://www.debian.org/partners/ — CSP
- https://www.debian.org/security/ — CSP
- https://www.debian.org/social_contract — CSP
- https://www.debian.org/support — CSP
- https://www.debian.org/trademark — CSP
- https://www.debian.org/users/ — CSP
notice Title is very short
Rule title.too_short · Titles · 1 occurrence(s)
- https://www.debian.org/logos/ — 12 chars
notice Missing Twitter Card tag
Rule twitter.missing · Social · 47 occurrence(s)
- https://debian.org/
- https://www.debian.org/CD/vendors
- https://www.debian.org/MailingLists/
- https://www.debian.org/MailingLists/subscribe
- https://www.debian.org/News
- https://www.debian.org/News/2026/20260711
- https://www.debian.org/consultants
- https://www.debian.org/contact
- https://www.debian.org/devel/
- https://www.debian.org/devel/join/
- https://www.debian.org/devel/join/newmaint
- https://www.debian.org/distrib
- https://www.debian.org/distrib/pre-installed
- https://www.debian.org/doc/
- https://www.debian.org/doc/manuals/project-history/
- https://www.debian.org/events/merchandise
- https://www.debian.org/intro/people
- https://www.debian.org/license
- https://www.debian.org/mirror/sponsors
- https://www.debian.org/partners/
- https://www.debian.org/security/
- https://www.debian.org/social_contract
- https://www.debian.org/support
- https://www.debian.org/trademark
- https://www.debian.org/users/
notice Underscores in URL path (prefer hyphens)
Rule url.underscores · URL · 2 occurrence(s)
notice Uppercase letters in URL path
Rule url.uppercase · URL · 10 occurrence(s)
- https://www.debian.org/Bugs/
- https://www.debian.org/Bugs/Reporting
- https://www.debian.org/CD/
- https://www.debian.org/CD/vendors
- https://www.debian.org/CD/vendors/info
- https://www.debian.org/MailingLists/
- https://www.debian.org/MailingLists/subscribe
- https://www.debian.org/News
- https://www.debian.org/News/2026/20260711
- https://www.debian.org/News/news
Pages (showing 50 of 50)
| URL | Status | Indexable | Words | In-links |
|---|---|---|---|---|
| https://debian.org/ Debian -- The Universal Operating System |
200 | yes | 270 | 45 |
| https://www.debian.org/trademark Debian -- Debian Trademarks |
200 | yes | 1159 | 40 |
| https://www.debian.org/license Debian WWW Pages License |
200 | yes | 316 | 39 |
| https://www.debian.org/contact Debian -- How to contact us |
200 | yes | 911 | 40 |
| https://www.debian.org/support Debian -- User Support |
200 | yes | 809 | 35 |
| https://www.debian.org/MailingLists/ Debian -- Mailing Lists |
200 | yes | 1850 | 36 |
| https://www.debian.org/events/ Events related to Debian |
200 | yes | 267 | 34 |
| https://www.debian.org/Bugs/ Debian bug tracking system |
200 | yes | 755 | 35 |
| https://www.debian.org/News Debian -- Latest News |
200 | yes | 444 | 34 |
| https://www.debian.org/distrib Download Debian |
200 | yes | 545 | 34 |
| https://www.debian.org/security/ Debian -- Security Information |
200 | yes | 3240 | 34 |
| https://www.debian.org/doc/ Debian -- Documentation |
200 | yes | 798 | 35 |
| https://www.debian.org/social_contract Debian Social Contract |
200 | yes | 1229 | 35 |
| https://www.debian.org/blends/ Debian Pure Blends |
200 | yes | 677 | 34 |
| https://www.debian.org/releases/ Debian -- Debian Releases |
200 | yes | 748 | 34 |
| https://www.debian.org/international/ Debian -- Debian International |
200 | yes | 648 | 34 |
| https://www.debian.org/devel/ Debian -- Debian Developers' Corner |
200 | yes | 1111 | 34 |
| https://www.debian.org/CD/ Debian installation media for USB, CD, DVD |
200 | yes | 446 | 33 |
| https://www.debian.org/code_of_conduct Debian Code of Conduct |
200 | yes | 905 | 33 |
| https://www.debian.org/legal Debian -- Legal issues |
200 | yes | 244 | 33 |
| https://www.debian.org/sitemap Site map for Debian web pages |
200 | yes | 527 | 33 |
| https://www.debian.org/devel/join/ Debian -- How to join Debian |
200 | yes | 828 | 5 |
| https://www.debian.org/Bugs/Reporting Debian -- Debian BTS - reporting bugs |
200 | yes | 2877 | 6 |
| https://www.debian.org/mirror/ Debian -- Debian Mirrors |
200 | yes | 266 | 4 |
| https://www.debian.org/releases/stable/ Debian -- Debian “trixie” Release Information |
200 | yes | 419 | 6 |
| https://www.debian.org/intro/people Debian -- People: Who we are and what we do |
200 | yes | 481 | 2 |
| https://www.debian.org/News/2026/20260711 Debian -- News -- Updated Debian 13: 13.6 released |
200 | yes | 2279 | 3 |
| https://www.debian.org/releases/stable/installmanual Debian trixie -- Installation Guide |
200 | yes | 702 | 3 |
| https://www.debian.org/doc/manuals/project-history/intro.en.html Chapter 1. Introduction -- What is the Debian Project? |
200 | yes | 472 | 2 |
| https://www.debian.org/CD/vendors/info Debian -- Information for CD vendors |
200 | yes | 710 | 2 |
| https://www.debian.org/security/cve-compatibility Debian -- Debian CVE compatibility |
200 | yes | 565 | 1 |
| https://www.debian.org/consultants Debian -- Debian Consultants |
200 | yes | 8177 | 5 |
| https://www.debian.org/doc/debian-policy/ Debian Policy Manual — Debian Policy Manual v4.7.4.1 |
200 | yes | 1689 | 3 |
| https://www.debian.org/CD/vendors Vendors of Debian installation media |
200 | yes | 636 | 5 |
| https://www.debian.org/MailingLists/subscribe Debian -- Mailing List Subscription |
200 | yes | 6321 | 3 |
| https://www.debian.org/donations Debian -- How to donate to the Debian Project |
200 | yes | 773 | 3 |
| https://www.debian.org/distrib/pre-installed Debian -- Computer vendors that pre-install Debian |
200 | yes | 1116 | 4 |
| https://www.debian.org/logos/ Debian logos |
200 | yes | 794 | 2 |
| https://www.debian.org/events/merchandise Debian Merchandise |
200 | yes | 669 | 3 |
| https://www.debian.org/partners/ Debian Partners |
200 | yes | 1506 | 4 |
| https://www.debian.org/mirror/sponsors Sponsors of all the Debian mirrors |
200 | yes | 1783 | 3 |
| https://www.debian.org/legal/licenses/mit Debian -- MIT License (Expat) |
200 | yes | 296 | 1 |
| https://www.debian.org/opl Debian -- Open Publication License |
200 | yes | 914 | 1 |
| https://www.debian.org/devel/join/newmaint Debian New Members Corner |
200 | yes | 1206 | 2 |
| https://www.debian.org/doc/manuals/project-history/ A Brief History of Debian |
200 | yes | 484 | 1 |
| https://www.debian.org/users/ Who's using Debian? |
200 | yes | 2013 | 1 |
| https://www.debian.org/security/2026/dsa-6250 I Challenge Thee |
200 | yes | 0 | 1 |
| https://www.debian.org/News/news | 200 | no | 0 | 2 |
| https://www.debian.org/lts/security/dla | 200 | no | 0 | 1 |
| https://www.debian.org/releases/stable/i386/ch05s04 Debian -- Page not found |
404 | no | 227 | 1 |
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