New Google Lighthouse now audits llms.txt readiness

Free llms.txt Generator
for any website

Turn your sitemap into a spec-compliant llms.txt file with AI-written page descriptions — so ChatGPT, Claude & Perplexity understand and cite your site.

First 20 URLs free No credit card Spec-compliant output Results in ~60 seconds

Trusted by 4,000+ teams — these companies already ship llms.txt

Cursor uses llms.txtCursor
Astro uses llms.txtAstro
Clerk uses llms.txtClerk
Deno uses llms.txtDeno
Bun uses llms.txtBun
Drizzle uses llms.txtDrizzle
Chakra UI uses llms.txtChakra
daisyUI uses llms.txtdaisyUI
Cal.com uses llms.txtCal.com
Coolify uses llms.txtCoolify
Cursor
Astro
Clerk
Deno
Bun
Drizzle
Chakra
daisyUI
Cal.com
Coolify

How it works

From URL to llms.txt in three steps

No code, no config, no crawler setup. Paste your domain and get a production-ready file.

1

Enter your domain

We discover every page through your sitemap and internal links — including orphan pages that menus miss.

2

AI analyzes every page

Each page is read, cleaned and summarized into a concise description written from real content — not guessed from titles.

3

Download & deploy

Get a spec-compliant llms.txt. Upload it to your site root — or let us host it and keep it updated automatically.

yourdomain.com/llms.txt 
# Acme Analytics

> Real-time product analytics for SaaS teams. Event tracking,
> funnels, and revenue attribution in one dashboard.

## Products
- [Event Tracking](https://acme.com/tracking): Capture user events with one snippet
- [Funnels](https://acme.com/funnels): Conversion analysis with cohort breakdowns

## Docs
- [Quickstart](https://acme.com/docs/start): Install and send your first event in 5 minutes
- [API Reference](https://acme.com/docs/api): REST endpoints, auth, and rate limits

## Pricing
- [Plans](https://acme.com/pricing): Free tier, Pro from $49/mo, custom enterprise

Spec-compliant format: H1 title, blockquote summary, grouped link sections — exactly what AI parsers expect.

Why llms.txt

AI search is answering questions about your business — with or without you

ChatGPT, Claude, Perplexity and Google AI Overviews now answer millions of buying questions daily. When AI can't parse your site, it guesses — or recommends a competitor it understands better.

llms.txt is the standard that fixes this. Proposed by Jeremy Howard (Answer.AI), it gives language models a curated, markdown map of your site: what you sell, what it costs, and which pages matter.

Adoption is accelerating: Anthropic, Stripe, Cloudflare, Vercel and Zapier publish llms.txt files, Yoast added it to WordPress, and Google's Lighthouse now includes llms.txt in its Agentic Browsing audit.

4,000+

teams have generated their llms.txt with us

~60s

from URL to a ready-to-deploy file

100%

spec-compliant with llmstxt.org format

24/7

hosted files with automatic regeneration

Features

Everything you need to be AI-visible

More than a file generator — a complete llms.txt workflow.

AI-written page descriptions

Every URL gets a description generated from its actual content — products, pricing, use cases. This is what separates a useful llms.txt from a bare link dump that AI ignores.

Full sitemap coverage

Recursive sitemap parsing plus internal link crawling — nothing gets missed.

Hosted llms.txt

Can't edit your site root? We serve your file from a permanent URL you can link or proxy.

Auto-updates

Your site changes; your llms.txt follows. Scheduled regeneration keeps content fresh without lifting a finger.

llms.txt checker

Verify any domain's llms.txt in one click with our free checker tool.

Standards compared

llms.txt vs robots.txt vs sitemap.xml

Three files, three different jobs. You need all of them — but only one talks to AI.

llms.txt robots.txt sitemap.xml
Audience AI models & agents Search crawlers Search crawlers
Purpose Explain content & context Allow / block access List URLs for indexing
Format Markdown with descriptions Plain-text directives XML, no context
Impact Accurate AI answers & citations Crawl control Faster indexing

Deep dive: llms.txt vs robots.txt vs sitemap.xml — full comparison

Pricing

Free to try. One-time payment for the full file.

No subscription required. Pay once per site, based on how many pages you have.

Free Preview

Test the format on any site

$0

  • First 20 URLs with AI descriptions
  • Full page count & AI visibility audit
  • Instant download, no signup
Most popular

Complete llms.txt

Your entire site, fully indexed

from $9

one-time, sized by page count

  • Every page on your site, described
  • Hosted file + permanent URL
  • Automatic regeneration on schedule
  • Instant email delivery + dashboard access
View pricing tiers by page count

≤ 99 pages

$9

≤ 999 pages

$19

≤ 1,999 pages

$49

≤ 4,999 pages

$79

5,000+ pages

$149

What is llms.txt?

llms.txt is a proposed web standard — created by Jeremy Howard of Answer.AI in late 2024 — that gives large language models a structured, markdown summary of your website. It lives at your domain root (yourdomain.com/llms.txt) and acts like a curated map: an H1 title, a blockquote summary of your business, and grouped links to your most important pages with short descriptions.

While robots.txt tells crawlers what they may access and sitemap.xml lists what exists, llms.txt explains what your content means. That context is exactly what AI systems need to answer questions about your product accurately — instead of hallucinating or skipping you entirely.

Adoption has moved fast: Anthropic, Stripe, Cloudflare, Vercel, Zapier and thousands of documentation sites now publish llms.txt files. Yoast added native support for WordPress, Mintlify generates it for docs automatically, and in May 2026 Google added llms.txt to Chrome Lighthouse's Agentic Browsing audit — making it an official readiness signal for AI-agent traffic.

How llms.txt improves your AI SEO (GEO)

Generative Engine Optimization (GEO) is the practice of making your content easy for AI systems to find, understand and cite. An llms.txt file is one of the highest-leverage GEO actions because it removes the two biggest obstacles AI faces on your site:

  • •Context window limits. LLMs can't read your whole site. llms.txt condenses hundreds of pages into a few thousand tokens they can actually consume.
  • •HTML noise. Navigation, scripts and layout markup bury your actual content. llms.txt is clean markdown, readable in one pass.

The result: when someone asks ChatGPT "what's the best tool for X" or asks Perplexity to compare vendors, AI has authoritative, structured facts about your business — your positioning, your pricing, your differentiators — rather than fragments scraped from a nav menu.

How to use your llms.txt file

Once generated, upload the file to your web root so it's reachable at https://yourdomain.com/llms.txt. Serve it as plain text (text/plain; charset=utf-8) and make sure robots.txt doesn't block AI user-agents like GPTBot, ClaudeBot or PerplexityBot from fetching it.

You can also use it directly with AI tools today: paste its URL into ChatGPT or Claude to give them instant context about your site, add it to Cursor with @docs for AI-assisted coding against your documentation, or reference it in custom GPTs and agents. If you can't modify your site root, our hosted option serves the file from a permanent URL and keeps it updated automatically.

FAQ

Frequently asked questions

What is llms.txt and why do I need it?
llms.txt is a standard file that helps large language models understand your website. It solves AI's two big problems with websites — context window limits and messy HTML — by providing a clean, structured markdown summary. Sites with llms.txt get represented more accurately in ChatGPT, Claude and Perplexity answers.
Is this llms.txt generator really free?
Yes. The free scan covers the first 20 URLs of any website with full AI-written descriptions — no signup or credit card required. For complete coverage of larger sites, one-time pricing starts at $9 depending on page count.
Where do I place the llms.txt file on my website?
Upload it to your site's root directory so it's accessible at https://yourdomain.com/llms.txt. On WordPress you can use a plugin like Yoast; on static sites drop it in your public folder. If you can't modify your root, we can host the file for you at a permanent URL.
Do AI systems actually read llms.txt?
Adoption is growing. Anthropic's Claude reads llms.txt when fetching URLs, Perplexity and Mistral have indicated support, and AI coding tools like Cursor use it heavily via @docs. Google added llms.txt to Lighthouse's Agentic Browsing audit in May 2026. You can also use the file proactively — paste it into any AI chat to give instant, accurate context about your site.
Does llms.txt improve my Google SEO ranking?
llms.txt targets GEO (Generative Engine Optimization) rather than classic rankings: better visibility in AI-generated answers, more accurate brand representation, and readiness for AI-agent traffic. It complements — not replaces — your existing SEO. As AI search grows, structured AI-readable content becomes as important as traditional ranking factors.
What's the difference between llms.txt and llms-full.txt?
llms.txt is a concise index: title, summary, and grouped links with descriptions (ideally under a few thousand tokens). llms-full.txt contains the complete markdown content of your key pages concatenated into one file, for agents that want to read everything without crawling each URL separately.
Which companies already use llms.txt?
Anthropic, Stripe, Cloudflare, Vercel, Zapier, Hugging Face, Perplexity, Cursor, Astro, Deno, Bun, Cal.com and thousands of other companies publish llms.txt files. Documentation platforms like Mintlify generate it automatically, and Yoast brought it to millions of WordPress sites.
How often should I update my llms.txt file?
Update it whenever you add pages, change products or pricing, or restructure your site — at minimum quarterly. Our hosted plan regenerates your file automatically on a schedule, so it never goes stale.

See what AI knows about your site

Free scan. First 20 URLs. Results in about a minute.