llms.txt is a proposed standard for a Markdown file at the root of a website that gives large language models a curated, machine-readable map of your most important content. It helps AI tools find and cite the right pages instead of guessing from raw HTML.

Where do I put the llms.txt file?

Host it at the root of your domain so it resolves at https://yoursite.com/llms.txt, and serve it with a text/plain content type. Many sites also publish an llms-full.txt with the full text content for deeper context.

What is the difference between llms.txt and robots.txt?

robots.txt tells crawlers which paths they may or may not fetch, while llms.txt curates and describes your best content for AI models to read and cite. They serve different goals and you can publish both.

What format does llms.txt use?

It uses Markdown. The file starts with an H1 title, an optional blockquote summary, then H2 sections containing bullet lists of links written as Markdown link syntax with an optional note after a colon.

Is my site data sent anywhere?

No. The builder assembles the llms.txt entirely in your browser from the fields you fill in. Nothing is uploaded, so you can draft the file for an unreleased site safely.

llms.txt File Builder

The llms.txt File Builder generates the curated, AI-readable index that an increasing number of language models look for when they read your site. Raw HTML is noisy; an llms.txt file hands AI tools a clean Markdown map of your most important pages so they cite the right things. This tool walks you through the standard’s structure and emits a valid file ready to host.

How it works

The llms.txt format is plain Markdown with a fixed shape. The file opens with an H1 title (your site or product name), followed by an optional blockquote summary that states what you do in one line. After that come H2 sections — typically Docs, Guides, API, or About — each containing a bullet list of links. Each link uses Markdown syntax with an optional note after a colon, for example - [Quickstart](https://site.com/quickstart): Get running in five minutes. The builder takes your title, summary, and grouped links and renders exactly this structure, escaping nothing you do not need and dropping empty sections.

Tips and example

Curate, do not dump. Link the 5–10 pages you most want an AI to read and cite, not every URL — the point is a high-signal map, not a sitemap.
Write notes for ambiguous titles. The colon note after a link is your chance to tell the model what the page actually covers when the title alone is unclear.
Serve it as text/plain at the root. Host it at /llms.txt; consider an /llms-full.txt with full page content for models that want deeper context.

Example output begins with # Acme Docs, then > Acme is an API for sending transactional email., then a ## Docs section listing your quickstart and reference pages as Markdown links.

llms.txt File Builder

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How it works

Tips and example