Mentionable
Mentionable
All features

Free llms.txt Generator

Generate an llms.txt file for your site in one click. The emerging standard that tells AI crawlers what your site is about and which pages matter most. Free, no signup.

Curious if AI mentions your brand?

Run a free scan and see where you stand on ChatGPT.

Free AI Scan

Key Takeaways

  • Generate a valid llms.txt file for any website by just pasting a URL. The tool crawls the site, aggregates key sections, and outputs a clean text file ready to drop at the root of your domain.
  • llms.txt is the emerging standard (similar in spirit to robots.txt) that tells AI crawlers what your site is, which pages matter, and how content is organized.
  • Output includes site name, URL, aggregated sections, link counts, pages discovered, and estimated file size. Download as text or copy to clipboard.
  • Free tool, no signup required. Daily rate limit per IP.
  • Pairs naturally with schema markup and page audits as part of a complete GEO optimization stack.

robots.txt tells crawlers what to skip. sitemap.xml lists URLs for Google. llms.txt is the new one: a structured, AI-friendly summary of your site that LLMs can actually use.

You probably do not have one yet. Most sites do not. That is an opportunity, not a problem.

What llms.txt is

llms.txt is a file that sits at the root of your domain (yoursite.com/llms.txt) and tells AI models what your site is about, which pages matter, and how your content is organized.

It is written in Markdown, which is deliberate. LLMs parse Markdown natively, better than they parse raw HTML. A well-structured llms.txt gives an AI model a fast, clean snapshot of your site without having to crawl and make sense of your entire navigation.

The proposed standard (published by Jeremy Howard in late 2024) specifies a simple structure:

  • Site name and URL at the top
  • A short summary of what the site does
  • Section headings (docs, blog, products, etc.) with lists of key URLs under each
  • Optional context like recent blog posts or featured content

Think of it as "here is my site, written in the format an LLM is most comfortable reading."

How the generator works

You paste your homepage URL. The tool does the rest in about 30 seconds.

  1. Crawl: fetches your site, discovers pages, and maps the structure.
  2. Section detection: identifies key content areas (blog, docs, products, pricing, about, etc.) based on URL patterns and page content.
  3. Link aggregation: groups discovered pages under each section.
  4. Output generation: builds a properly formatted llms.txt file with site metadata, sections, and links.

You get a ready-to-upload file plus a set of statistics: number of sections, total links, file size, and pages discovered.

What the output contains

A typical generated llms.txt includes:

  • Site metadata: name, URL, short description
  • Section headings for major content areas (Blog, Docs, Products, Pricing, About, Contact, etc.)
  • Page link lists under each section, organized hierarchically
  • Link counts per section so you can see distribution at a glance

You see the full file preview in the tool before you download. You can copy it to clipboard or download as text.

Why this matters for AI visibility

AI adoption of llms.txt is early. Major LLM providers have not publicly confirmed using it yet. But the trend is clear: AI models are moving toward structured, machine-readable site context. Sites that ship llms.txt early will have clean ingestion when adoption catches up.

There are three concrete reasons to bother:

It is free to ship. A file at your domain root costs nothing. The upside of being ahead is asymmetric: if it works, you benefit. If it does not, you lost 5 minutes.

It forces clarity about your site. Generating llms.txt makes you think about what your site actually is and which pages matter. Most site owners never do this explicitly, and their content strategy suffers for it.

It stacks with schema and good HTML. llms.txt is not a silver bullet. It works alongside proper schema markup, clean HTML, and quality content. Shipping all of them together is the play.

Where llms.txt fits in the GEO stack

Think of AI visibility optimization as a layered stack:

  1. Content: is the answer actually on your site?
  2. HTML structure: can an AI model parse it cleanly?
  3. Schema markup: do entities and relationships have explicit structure?
  4. llms.txt: does the site as a whole have machine-readable context?
  5. Citations and mentions: are trusted sources pointing at you?

You can run this stack in order. Content first, structure second, schema third, llms.txt fourth, off-site mentions fifth. Each layer multiplies the effect of the others. llms.txt is the cheapest layer to ship, which is why most sites should start there even if they have not solved the others yet.

The limitations

The tool crawls publicly accessible pages. If large sections of your site require authentication or heavy JavaScript rendering, they may not appear in the generated file. Re-run the tool after making any content accessible to crawlers.

llms.txt is an emerging standard. Adoption by major LLMs is not guaranteed, and the spec may evolve. What is generated today follows the current specification. If the spec changes significantly, re-run to get the updated format.

Try it yourself

Paste your homepage URL. Get your llms.txt file in 30 seconds. Upload it to your site root. Ship.

Generate your llms.txt

Related articles

Frequently Asked Questions

What is llms.txt?
llms.txt is an emerging standard (proposed in 2024 by Jeremy Howard) that acts as a structured, AI-friendly site map specifically for LLMs. It lives at the root of your domain (like yoursite.com/llms.txt), is written in Markdown, and describes your site's purpose, key pages, and content structure in a format that is easy for AI models to parse.
How is llms.txt different from robots.txt or sitemap.xml?
robots.txt tells crawlers what they can access. sitemap.xml lists every URL for traditional search engines. llms.txt is specifically designed for LLMs: it provides context about what your site is, which pages are most important, and how your content is organized. It is human-readable Markdown, which matches how LLMs parse content natively.
Do any AI models actually use llms.txt today?
Adoption is early but growing. The standard was proposed in late 2024 and has traction in the AI engineering community. Major LLM providers have not officially confirmed using it yet, but the file costs nothing to generate and ship, and early adopters gain visibility advantages as adoption matures. Think of it as building for a future that is clearly coming.
What does the generator actually do?
You paste your homepage URL. The tool crawls your site, identifies the most important sections (docs, blog, products, pricing, about, etc.), aggregates page links by section, and generates a properly formatted llms.txt file. You get a text file with site name, site URL, section headings, link lists, and counts, ready to upload to your site root.
Where do I put the generated file?
Upload the generated file to the root of your domain so it is accessible at yoursite.com/llms.txt (the same way robots.txt sits at yoursite.com/robots.txt). The tool outputs the file in exactly the format the standard specifies, so no manual editing is needed.
Should I update llms.txt regularly?
Yes, whenever your site structure changes significantly. If you launch a new product section, publish a new major content cluster, or restructure your navigation, re-run the generator and update the file. For most sites, refreshing every 2 to 3 months is enough.
Is there a rate limit?
Yes. The free tool is rate-limited per IP on a daily rolling window. Crawling large sites uses real resources, so the limit keeps the tool available for everyone. Most users generate one or two files per day, well within the limit.

Ready to check your AI visibility?

See if ChatGPT mention you on the queries that actually lead to sales. No credit card required.

Start Your Free Scan

Keep Reading

Free llms.txt Generator | Mentionable