Every check in a CitedBy audit
CitedBy runs 111 checks on a site: 14 can be an error, 43 a warning and 54 a notice. Each has its own page with what it finds, the exact change, an example where one helps, and how often we have seen it.
Seen: “4% · 0%” is Show HN sites · Lovable sites in the launch crawl; “3/4 · 1 false alarm” is a finding judged right on 3 of our 4 audited sites and wrong on 1.
As of 24 October 2026 · engine version 12 · 111 checks · Download the JSON · Checks by the day they went live
AI crawler access (17)
| Check | Severity | Added | Seen |
|---|---|---|---|
| Site is not served over HTTPS | Error | Before 19 Oct 2026 | Not measured yet |
| Pages return an error status | Error | Before 19 Oct 2026 | Not measured yet |
| robots.txt blocks ChatGPT-User | Error | Before 19 Oct 2026 | 0% · 0% |
| robots.txt blocks Claude-SearchBot | Error | Before 19 Oct 2026 | 0% · 0% |
| robots.txt blocks Claude-User | Error | Before 19 Oct 2026 | Not measured yet |
| robots.txt blocks OAI-SearchBot | Error | Before 19 Oct 2026 | 0% · 0% |
| robots.txt blocks Perplexity-User | Error | Before 19 Oct 2026 | 0% · 0% |
| robots.txt blocks PerplexityBot | Error | Before 19 Oct 2026 | 0% · 0% |
| Your firewall or CDN refuses AI search crawlers | Error | Before 19 Oct 2026 | 1% · 0% |
| No llms-full.txt (optional) | Notice | Before 19 Oct 2026 | Not measured yet |
| llms.txt points at pages that crawlers cannot use | Notice | Before 19 Oct 2026 | Not measured yet |
| No llms.txt (optional) | Notice | Before 19 Oct 2026 | 66% · 82% |
| robots.txt blocks CCBot | Notice | Before 19 Oct 2026 | 4% · 0% |
| robots.txt blocks ClaudeBot | Notice | Before 19 Oct 2026 | 3% · 0% |
| robots.txt blocks Google-Extended | Notice | Before 19 Oct 2026 | 3% · 0% |
| robots.txt blocks GPTBot | Notice | Before 19 Oct 2026 | 4% · 0% |
| Your firewall or CDN refuses AI training crawlers | Notice | Before 19 Oct 2026 | Not measured yet |
Content and readability (10)
| Check | Severity | Added | Seen |
|---|---|---|---|
| Page is empty without JavaScript | Error | Before 19 Oct 2026 | 14% · 73% |
| Duplicate or near-duplicate content | Warning | 19 October 2026 | 3/4 · 1 false alarm |
| Scripts change or remove what the page says | Warning | 24 October 2026 | 1/4 |
| Product or item list loads with JavaScript | Warning | Before 19 Oct 2026 | Not measured yet |
| Prices appear only after scripts run | Warning | 24 October 2026 | Not measured yet |
| Page is set to noindex | Warning | Before 19 Oct 2026 | 3/4 |
| Long redirect chain | Warning | Before 19 Oct 2026 | Not measured yet |
| Thin content | Warning | Before 19 Oct 2026 | Not measured yet |
| The page opens with source and date lines | Notice | 24 October 2026 | Not measured yet |
| Very little text compared with code | Notice | 19 October 2026 | 1/4 |
Titles, headings and schema (31)
| Check | Severity | Added | Seen |
|---|---|---|---|
| Missing title | Error | Before 19 Oct 2026 | Not measured yet |
| Missing meta description | Warning | Before 19 Oct 2026 | Not measured yet |
| Organization lists no profile outside your own site | Warning | Before 19 Oct 2026 | 3/4 |
| FAQ markup lists questions the page does not show | Warning | 24 October 2026 | 2/4 |
| Form field without a name | Warning | 24 October 2026 | Not measured yet |
| Missing H1 | Warning | Before 19 Oct 2026 | Not measured yet |
| Structured data does not parse | Warning | 19 October 2026 | Not measured yet |
| No structured data (schema) | Warning | Before 19 Oct 2026 | 53% · 77% |
| Organization schema has broken links | Warning | Before 19 Oct 2026 | Not measured yet |
| Home page has no Organization schema | Warning | Before 19 Oct 2026 | Not measured yet |
| Product page without Product schema | Warning | Before 19 Oct 2026 | Not measured yet |
| Structured data Google detects but rejects | Warning | 21 October 2026 | Not measured yet |
| Title or description is cut off | Warning | 24 October 2026 | 3/4 |
| Duplicate titles | Warning | Before 19 Oct 2026 | Not measured yet |
| Article has no named author | Notice | 24 October 2026 | 4/4 |
| Duplicate meta descriptions | Notice | Before 19 Oct 2026 | Not measured yet |
| Meta description too short or too long | Notice | 19 October 2026 | 1/4 |
| FAQ markup on most pages | Notice | Before 19 Oct 2026 | 3/4 |
| More than one H1 | Notice | Before 19 Oct 2026 | Not measured yet |
| Headings skip a level | Notice | Before 19 Oct 2026 | Not measured yet |
| Images without alt text | Notice | Before 19 Oct 2026 | Not measured yet |
| Declared language differs from the text | Notice | 24 October 2026 | Not measured yet |
| No language declared | Notice | 19 October 2026 | Not measured yet |
| No single <main> landmark | Notice | 24 October 2026 | 1/4 |
| No social image (og:image) | Notice | 19 October 2026 | Not measured yet |
| No Open Graph tags | Notice | Before 19 Oct 2026 | Not measured yet |
| Article without Article schema | Notice | Before 19 Oct 2026 | Not measured yet |
| Article schema without author or date | Notice | 24 October 2026 | 1/4 |
| Questions and answers without FAQ schema | Notice | Before 19 Oct 2026 | 0/4 · 1 false alarm |
| Title starts with the brand, so the topic is cut first | Notice | 24 October 2026 | 1/4 |
| Title too short or too long | Notice | Before 19 Oct 2026 | 1/4 |
Links, canonical and speed (46)
| Check | Severity | Added | Seen |
|---|---|---|---|
| Broken internal links | Error | Before 19 Oct 2026 | Not measured yet |
| Canonical points to a broken or redirecting URL | Error | 19 October 2026 | Not measured yet |
| Redirect loop | Error | 19 October 2026 | Not measured yet |
| Canonical points to a noindex page | Warning | 23 October 2026 | 1/4 |
| Canonical points to another page | Warning | Before 19 Oct 2026 | Not measured yet |
| Pages refuse or do not answer our crawler | Warning | Before 19 Oct 2026 | 1/4 |
| Very large HTML | Warning | Before 19 Oct 2026 | 1/4 |
| hreflang alternate does not link back | Warning | 23 October 2026 | 1/4 |
| HTTP version does not redirect to HTTPS | Warning | Before 19 Oct 2026 | Not measured yet |
| Oversized images | Warning | 19 October 2026 | Not measured yet |
| Internal links use #/ routes | Warning | 24 October 2026 | 1/4 |
| Internal links carry tracking or language parameters | Warning | 24 October 2026 | 4/4 |
| Links send readers to a page in another language | Warning | 24 October 2026 | 2/4 · 1 false alarm |
| Mixed content (HTTP resources on an HTTPS page) | Warning | 19 October 2026 | Not measured yet |
| Sitemap lists a page that is not indexable | Warning | Before 19 Oct 2026 | Not measured yet |
| Orphan pages | Warning | Before 19 Oct 2026 | Not measured yet |
| Links to pages that no longer exist | Warning | Before 19 Oct 2026 | Not measured yet |
| Sitemap has invalid entries | Warning | Before 19 Oct 2026 | Not measured yet |
| No sitemap.xml | Warning | Before 19 Oct 2026 | 26% · 69% |
| robots.txt does not name your sitemap | Warning | Before 19 Oct 2026 | Not measured yet |
| Slow page | Warning | Before 19 Oct 2026 | Not measured yet |
| www and non-www both serve the site | Warning | Before 19 Oct 2026 | Not measured yet |
| Link to a page that no longer exists | Notice | 24 October 2026 | Not measured yet |
| No canonical URL | Notice | Before 19 Oct 2026 | Not measured yet |
| Content-Security-Policy allows inline scripts | Notice | Before 19 Oct 2026 | 1/4 |
| Page has no internal links (dead end) | Notice | 19 October 2026 | Not measured yet |
| Page is more than 3 clicks from the home page | Notice | 19 October 2026 | 3/4 |
| No favicon | Notice | Before 19 Oct 2026 | Not measured yet |
| Invalid hreflang | Notice | Before 19 Oct 2026 | Not measured yet |
| hreflang has no x-default | Notice | 24 October 2026 | 1/4 |
| No HSTS header | Notice | Before 19 Oct 2026 | Not measured yet |
| Internal links point to redirects | Notice | 19 October 2026 | 1/4 |
| The home address changes language with the visitor's browser | Notice | Before 19 Oct 2026 | Not measured yet |
| Meta refresh redirect | Notice | 19 October 2026 | Not measured yet |
| Pages cannot be revalidated | Notice | Before 19 Oct 2026 | 2/4 |
| Indexable page missing from the sitemap | Notice | 19 October 2026 | Not measured yet |
| Links to addresses that have moved | Notice | 24 October 2026 | 2/4 |
| Public page cannot be cached | Notice | 24 October 2026 | 2/4 |
| Render-blocking scripts and styles | Notice | 19 October 2026 | 2/4 |
| Security headers missing | Notice | Before 19 Oct 2026 | Not measured yet |
| Server version is public | Notice | Before 19 Oct 2026 | Not measured yet |
| Sitemap has no useful last-modified dates | Notice | Before 19 Oct 2026 | 2/4 |
| Sitemap dates are older than the pages' own | Notice | Before 19 Oct 2026 | Not measured yet |
| Sitemap and site disagree | Notice | Before 19 Oct 2026 | Not measured yet |
| URL is hard to read or share | Notice | 19 October 2026 | Not measured yet |
| Address variants of real pages return 404 | Notice | Before 19 Oct 2026 | Not measured yet |
Answerability (7)
| Check | Severity | Added | Seen |
|---|---|---|---|
| Buyer questions the site does not answer | Warning | Before 19 Oct 2026 | Not measured yet |
| No pricing page found | Warning | Before 19 Oct 2026 | Not measured yet |
| Page does not answer the question first | Warning | Before 19 Oct 2026 | Not measured yet |
| Page is hard to quote | Warning | Before 19 Oct 2026 | Not measured yet |
| No about page found | Notice | Before 19 Oct 2026 | Not measured yet |
| No comparison or alternatives page | Notice | Before 19 Oct 2026 | Not measured yet |
| No FAQ | Notice | Before 19 Oct 2026 | Not measured yet |
How an audit works: method