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llms.txt Generator (Builder and Checker)

Build an llms.txt from your site name, a summary and a list of links to key pages, then download it. Or paste an existing llms.txt to check its structure.

Free · no sign-up · runs in your browser · updated

Use llms.txt Generator

llms.txt is a community proposal (llmstxt.org), not an official standard. Google states that you do not need a special AI text file to appear in AI Overviews or AI Mode, and there is no guarantee that AI crawlers read it. Treat it as a cheap extra, not a requirement.

One or two sentences: what the site is, who it is for, and the key things a model should know.

Plain paragraphs or lists. Must not contain headings (lines starting with #).

Sections and links

One link per line, in the format URL | name | notes. The name and notes can be left empty; if the name is empty, it is taken from the address. Name a section “Optional” for secondary links that can be skipped.

Section 1

Suggestions

  • The summary (blockquote) is empty. The specification recommends it as the main context for models.
  • There are no links yet. Add at least one section listing your site’s important pages.

llms.txt

# Site name

Upload it to the root of your site so it opens at yourdomain.com/llms.txt.

How to use llms.txt Generator

  1. Enter your site name and summary, then write the links to your key pages, one per line, in sections such as “Guides” or “Products”.

  2. Fix anything flagged in the Needs fixing or Suggestions box, then download llms.txt.

  3. Upload it to the root of your site so it opens at yourdomain.com/llms.txt. For an existing file, switch to “Check an existing llms.txt”.

The llms.txt format

According to llmstxt.org (proposed by Jeremy Howard on 3 September 2024), the file is Markdown in a fixed order: an H1 title with the site name (the only required part), a blockquote with a summary, free-form body sections without headings, then zero or more H2 sections containing link lists in the form “- [name](url): notes”. An H2 section named “Optional” holds secondary links that an agent may skip when it needs a shorter context.

The file goes at /llms.txt or in a sub-path, and its links should preferably point to pages that are easy for machines to read, such as Markdown versions of the pages.

How useful is llms.txt?

llms.txt is still a community proposal. Google’s documentation on its AI features states that you do not need to create AI text files or special markup to appear in AI Overviews and AI Mode. There is no guarantee that any particular AI crawler reads or respects this file, so do not expect an effect on rankings or citations.

If you still want one, it costs little and the benefit is clear for documentation or for sites that want to be easy for agents to read. Keep its content consistent with your site and update it when pages change.

Questions about llms.txt Generator

Does llms.txt affect rankings in Google?

There is no evidence that it does, and Google says no special AI text file is needed to appear in its AI features. This tool is for people who want to voluntarily offer a site summary to AI agents.

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

robots.txt controls which crawlers may crawl. llms.txt is a Markdown summary that points to key pages. They are independent; llms.txt does not block or allow anything.

Which parts are required?

Only the H1 title is required. The blockquote summary, the description and the H2 link sections are optional, although a summary and links are strongly recommended to make the file useful.

What is the Optional section for?

Links in a section named Optional are marked as secondary, so an agent may skip them when it needs a shorter context.

Is my data sent to a server?

No. The file is built and checked in your browser. This tool also does not open your URLs; it only assembles text from what you enter.

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