llms.txt Generator & Validator

What is llms.txt?

llms.txt is a proposed standard (by Jeremy Howard) that provides a markdown-formatted text file at your website root. It gives AI models and large language models (LLMs) concise, structured information about your site, similar to how robots.txt guides search engine crawlers.

llms.txt Format Rules

• H1 heading required - The file must start with a title using # Your Site Name
• Optional blockquote summary - A brief description using > lines after the H1
• H2 sections - Organize content into categories like ## Main URLs, ## Resources
• List items only in sections - H2 sections should only contain list items (-, *, +, or numbered), not plain text paragraphs
• Markdown links - Use [Text](https://url) or bare URLs
• No sensitive data - Avoid exposing email addresses or phone numbers directly

Where to Place llms.txt

Put your llms.txt file at the root of your domain: https://yourdomain.com/llms.txt. Alternatively, it can be placed at /.well-known/llms.txt.

Frequently Asked Questions

Is llms.txt an official web standard?

It is a proposed standard gaining adoption, not yet an official W3C or IETF standard. However, many sites already use it and AI tools are starting to look for it.

Does llms.txt affect SEO?

Not directly for traditional search engines. It helps AI-powered search and chatbots better understand your site, which may improve visibility in AI-generated answers.

Can I have both robots.txt and llms.txt?

Yes. They serve different purposes. robots.txt controls crawler access, while llms.txt provides structured information for AI models.