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LLMs.txt Checker & Validator
Enter a domain to fetch its llms.txt file and check that it follows the recommended structure.
llms.txt is an emerging proposal, not an official standard. The checks follow the structure described by the proposal.
About the LLMs.txt Checker & Validator
The llms.txt proposal is a Markdown file at the root of your site that gives AI tools a short, curated guide to your most important pages. This validator checks that the file exists and is well formed.
How to use the LLMs.txt Checker & Validator
- Enter your domain, for example example.com.
- Press Validate llms.txt.
- Read the checks for the title, summary, sections and links.
- Fix any warnings in your file and validate again.
Frequently asked questions
What is llms.txt?
A proposed Markdown file placed at yoursite.com/llms.txt that lists key pages and a short summary for AI tools to read.
Is llms.txt required?
No. It is an emerging proposal, not an official standard, and search engines do not require it.
What should the file contain?
An H1 title, a short blockquote summary, and H2 sections with Markdown lists of links.
