llms.txt Generator & Validator
Generate a spec-shaped llms.txt from your site, or validate an existing one — so AI crawlers understand your content. Free, instant, no signup.
Help AI crawlers understand your site
llms.txt is an emerging standard: a single markdown file at yourdomain.com/llms.txt that gives AI assistants a curated map of your most important pages. Instead of guessing your site structure, crawlers get a clean title, summary and grouped links. This free tool builds one from your existing site in seconds — or validates a file you already have.
How the llms.txt generator works
- Enter your website. We read your homepage and its navigation.
- We group your key pages into sections — docs, product, pricing, resources and more.
- You get a ready-to-use llms.txt to copy or download, following the llmstxt.org spec.
Validate an existing llms.txt
Already have a file? Switch to Validate and paste it in. We check it against the spec — an H1 title, a summary blockquote, section headings and well-formed markdown links — and tell you exactly what to fix.
llms.txt is a start, not the whole story
Publishing an llms.txt helps AI crawlers find your content, but being recommended in AI answers depends on much more — structured data, reviews, comparison pages and how often you're cited. Run our GEO Audit to score those signals, and use Visiblee to track whether ChatGPT, Gemini and Perplexity actually mention your brand over time.
Frequently asked questions
What is an llms.txt file?
llms.txt is a simple markdown file at the root of your site (yourdomain.com/llms.txt) that gives AI crawlers a curated map of your most important pages — a title, a short summary, and links grouped into sections. It helps assistants like ChatGPT and Perplexity find and understand your key content.
Is this llms.txt generator free?
Yes. Enter your website and we generate a spec-shaped llms.txt from your site's structure in seconds — copy or download it, no signup. You can also paste an existing file to validate it against the spec.
How do I use the generated file?
Copy or download it, review the page list, then upload it to the root of your site so it's served at yourdomain.com/llms.txt. It's a starting point — edit the title, summary and links to highlight the pages you most want AI assistants to use.
What makes a valid llms.txt?
The spec (llmstxt.org) expects an H1 title, an optional summary blockquote, and one or more sections of markdown links. The validator checks each of these and tells you exactly what to fix.
Does llms.txt guarantee AI will mention me?
No — llms.txt helps crawlers find your content, but being recommended depends on far more: structured data, reviews, comparison pages and how often you're cited. Run our GEO Audit to score those, and use Visiblee to track whether AI assistants actually mention you.
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