What is llms.txt?
llms.txt is a plain-text file at a website's root that gives AI assistants a concise, readable summary of the site.
Definition
Proposed as a convention for language models, it is a Markdown file listing what a site is, its key facts and its most useful pages. A longer llms-full.txt can hold more detail.
Why it matters
It gives AI assistants an accurate, easy-to-read source about your site instead of leaving them to infer it from complex pages.
How to get it right
- Lead with a one-paragraph summary.
- List key facts and pages with links.
- Keep it accurate and generated from real site data.
- Put extended detail in llms-full.txt.
Mistakes to avoid
- Claims the site does not make
- A file so long it buries the summary
- Letting it go stale
Related terms
- Generative engine optimization (GEO)Generative engine optimization is the practice of making content more likely to be cited by AI assistants such as ChatGPT, Perplexity and Google's AI answers.
- Schema markupSchema markup is structured data added to a page so search engines and AI systems understand what it is about.
- Server-side rendering (SSR)Server-side rendering means a page's HTML is produced on the server, so it arrives ready to display.
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What is llms.txt?
llms.txt is a plain-text file at a website's root that gives AI assistants a concise, readable summary of the site. Proposed as a convention for language models, it is a Markdown file listing what a site is, its key facts and its most useful pages. A longer llms-full.txt can hold more detail.
Why does llms.txt matter?
It gives AI assistants an accurate, easy-to-read source about your site instead of leaving them to infer it from complex pages.
How do you get llms.txt right?
Lead with a one-paragraph summary. List key facts and pages with links. Keep it accurate and generated from real site data. Put extended detail in llms-full.txt.
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