llms.txt checker
Find and review a website’s optional llms.txt file, headings, and links.
How to check an llms.txt file
Find the optional root-level file and review its basic Markdown structure without treating it as a ranking signal.
Enter a website URL.
Click Check llms.txt to request the root-level /llms.txt file.
Review its headings, links, response type, and readable preview.
Continue checking your website
To review crawler permissions separately from optional site guidance, use the Robots.txt tester for a page linked from your llms.txt file.
To inspect the readable content of a page listed in your guidance, try the AI crawler inspector and compare it with the description in your file.
Frequently asked questions
llms.txt is a proposed text-file convention for giving language models a concise set of useful website links and context. It is optional and is not the same as robots.txt.
No. The checker only verifies whether the file exists and reviews basic structure. It cannot prove that an AI product reads the file or that adding one will improve visibility or citations.
Serve it from the website root at /llms.txt as a public text response. Keep its descriptions accurate and link to useful canonical resources on your site.
No. Use robots.txt for crawler permissions. An llms.txt file provides optional guidance and links; it does not replace robots.txt access rules.
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