llms.txt Generator & Checker

What is llms.txt?

llms.txt is a plain-text Markdown file at the root of your site (yoursite.com/llms.txt) that gives AI tools a short, curated map of your most useful pages. It was proposed in 2024 by Jeremy Howard of Answer.AI, and the format is documented at llmstxt.org.

The format is simple:

• # Site name: the only required line
• > One-paragraph summary of what the site or business is
• optional paragraphs with extra context
• ## Section headings with lists of links: - [Page title](https://...): what the page covers
• an optional ## Optional section for secondary pages

How the generator works

1. It reads your XML sitemap (from robots.txt, or /sitemap.xml), or the list of URLs you paste.
2. It prioritises top-level pages, then fetches each page's title and meta description.
3. It groups pages into sections by their first folder (for example /services, /insights, /case-studies).
4. You edit the site name, summary, section names and descriptions, then copy or download the file.

Upload the file to the root of your domain so it loads at /llms.txt. On Next.js, put it in the public folder; on WordPress, upload it to the site root or use an SEO plugin that supports it; on Shopify, serve it through a redirect to a file in your theme assets or an app.

What the checker validates

• The file exists at /llms.txt, returns 200 and is served as text
• It starts with a single H1 and has a blockquote summary
• Sections use ## headings with Markdown link lists
• Links are absolute, and a sample of them load without errors or redirects
• No HTML (a common sign your server returns a web page instead of the file)
• Whether an llms-full.txt companion file exists

llms.txt vs robots.txt vs sitemap.xml

Does llms.txt actually help?

Honestly: nobody can prove it does yet. I add it to client sites by default because it costs minutes and does no harm. But AI visibility still depends on the basics: crawlers being allowed in, content being in the HTML, and other sites corroborating who you are. My llms.txt guide covers the evidence in more depth.