What is llms.txt?
llms.txt is a proposed standard (see llmstxt.org) that helps AI search engines understand your website. While robots.txt controls crawler access, llms.txt tells AI systems what your site is about, which pages matter, and how to cite your content.
Where to place it
Upload to your site root at https://yourdomain.com/llms.txt. Some sites also provide /llms-full.txt with more detail.
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FAQ
What's the difference between robots.txt and llms.txt?+
robots.txt controls crawler access. llms.txt doesn't control access — it provides structured info about your site's purpose, key pages, and how AI should cite your content.
Do all AI crawlers support llms.txt?+
Adoption is growing. Having one is a forward-looking investment in your GEO strategy, even if not all systems read it yet.
How can I check if a site has llms.txt?+
Visit yourdomain.com/llms.txt, or use the Lumina Extension which checks automatically on every page.
Check llms.txt on any site
Lumina checks for llms.txt, verifies AI crawler access, and tracks AI traffic — all in one click.
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