How the llms.txt generator and validator works
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Paste your site URL. No signup or card.
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We check for an existing llms.txt. If you have one, we parse and score it 0-100 with specific wins and issues. If you do not, we read your homepage and generate a ready-to-paste file.
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Copy the result. Either a clean, scored validation report or a complete llms.txt you can add to your site in minutes.
Why llms.txt matters
llms.txt is an emerging standard that gives AI assistants a plain-text map of your site: what you are and which pages matter most. A clear llms.txt helps models understand and represent your brand correctly. This free llms.txt generator and validator checks yours against the spec or builds a solid first version from your homepage. Adding it is step one; to see whether AI actually cites you, run the AI visibility checker.
llms.txt - FAQ
What is llms.txt?
llms.txt is an emerging standard: a markdown file at /llms.txt that gives AI assistants a curated, concise map of your site - a title, a short summary and links to your key pages with descriptions. It helps models like ChatGPT, Perplexity, Claude and Gemini understand what your site is and cite the right pages.
Do I really need an llms.txt file?
It is quickly becoming a best practice for AI visibility (GEO). A clean llms.txt gives AI assistants an accurate, low-noise view of your site instead of forcing them to infer it from raw HTML. It is cheap to add and reduces the chance of AI describing or citing your brand incorrectly.
How does this tool work?
Enter your URL. If you already have a /llms.txt, we fetch it, validate it against the spec (H1 title, summary blockquote, sections and curated links) and score it 0-100 with a checklist of fixes. If you do not have one, we crawl your homepage and generate a ready-to-paste llms.txt you can refine.
Is the llms.txt tool free?
Yes, and no signup is needed. You get a score, a shareable report and a copy-paste file or fix list. We only fetch your public /llms.txt and, if missing, your homepage.
What is the difference between llms.txt and llms-full.txt?
llms.txt is a concise index - title, summary and curated links. llms-full.txt is an optional, larger file containing the full text of your key pages so AI can ground on your actual content. Start with llms.txt; add llms-full.txt once the index is solid.
How is llms.txt different from robots.txt and sitemap.xml?
robots.txt controls which crawlers may access your site; sitemap.xml lists every URL for search engines. llms.txt is purpose-built for AI assistants: a human-curated, prioritised summary of what matters, written in markdown rather than an exhaustive machine list.