Free tool

llms.txt Generator & Validator

llms.txt is a plain text file at the root of your site that tells ChatGPT, Claude, Gemini and Perplexity which of your pages are worth reading — and what each one covers. Point this at your domain and it will build one from your real pages, or check the file you already have against the spec.

Free, no sign-up, nothing stored. We read up to 40 public pages.

Common questions

Does llms.txt actually do anything yet?
Honestly: adoption is still early and no major AI vendor has publicly committed to reading it. What it does reliably today is give any model or agent that fetches your site a clean, unambiguous map instead of making it guess from your navigation. It costs one file and it cannot hurt you — but treat it as good hygiene, not a ranking lever. Anyone promising you rankings from an llms.txt is overselling it.
Where do I put the file?
At the root of your domain, so it loads at yoursite.com/llms.txt — the same place as robots.txt. On WordPress, upload it to the site root via your host’s file manager or FTP. On Shopify, Wix and Squarespace you may need your platform’s custom-file setting or a redirect.
Is this the same as robots.txt?
No. robots.txt says what crawlers may not touch. llms.txt says what a model should read first, and what each page is about. They do opposite jobs and you want both.
Do you store my site or my file?
No. The generator fetches your public pages, builds the file in memory and returns it. Nothing is written to our database and there is no email wall.