llms.txt checker
Type your site. We fetch /llms.txt and check it against the proposed llms.txt format. We do not score you for it, and here is why.
Free, no sign-up. We read public pages and DNS only, and keep nothing.
What it checks
- The file exists and is plain text, not an HTML page
- It starts with a # title
- A > summary line
- Markdown links to your key pages
Why it matters
llms.txt is a proposal for giving AI tools a short map of your site. No major assistant (ChatGPT, Claude, Gemini, Perplexity) has confirmed reading it, so our audit does not fail a site without one, and neither does this tool.
Having the file is cheap and harmless. Letting AI crawlers read your site (the AI crawler checker) matters far more today.
This is one check. The free audit runs all of them.
Security headers, DMARC and SPF, search tags, structured data, sitemap, AI crawler access, accessibility and real-user speed, on up to 20 pages in a real browser, with a fix prompt for each finding.