llms.txt checker
How it works
llms.txt is a Markdown file at the root of a site that points AI agents to the pages that matter. The format, from llmstxt.org: an H1 with the site's name (the only required part), an optional blockquote summary, optional text without headings, then H2 sections that each hold a list of links written as - [Title](URL): notes.
The checker reports errors (anything that breaks that structure) and warnings (things that work but could be better, such as relative or http links, empty sections and duplicates).
Questions
Does Google use llms.txt?
llms.txt is a proposal, not a search ranking signal, and Google has not said it uses it for Search. Its readers are AI agents and coding assistants that look for it when they visit a site.
Where should llms.txt live?
At /llms.txt on your site. Version 2 of the proposal also allows one under a path, such as /docs/llms.txt, covering the pages below it.
Read next
- llms.txt generatorFree llms.txt generator: describe your site, add sections and links or import them from your sitemap, and download a file in the llmstxt.org format.
- llms.txt, explainedllms.txt explained: what the file is, the exact format from the llmstxt.org proposal, what changed in version 2, who reads it, and how to write a good one.
- AI crawler checkerFree AI crawler checker: enter your site and see whether GPTBot, ChatGPT-User, PerplexityBot, ClaudeBot and 18 other crawlers may read it, per robots.txt.
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