llms.txt Checker
Validate your llms.txt file against the llmstxt.org specification. Enter a URL or paste your content to check format, structure, and get improvement suggestions.
Based on the llmstxt.org specification.
We'll fetch /llms.txt from this domain automatically.
Validation Results
Valid llms.txt Invalid llms.txt
/ checks passed
checks passed
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What is llms.txt?
llms.txt is an emerging standard that helps AI agents understand your website structure. Similar to robots.txt for search engines, llms.txt provides a Markdown-formatted overview of your site with links to key pages. It makes it easy for AI agents like ChatGPT, Claude, and Perplexity to navigate and understand your content.