llms.txt Generator
Free llms.txt generator and validator. Build a spec-compliant /llms.txt file that tells ChatGPT, Claude, Perplexity and other AI models what your site is about — then validate any existing file.
One link per line, format: Name | https://url | optional description
About This Free Online llms.txt Generator
Our free llms.txt generator builds a clean, spec-compliant llms.txt file — the new standard (from llmstxt.org) that works like robots.txt but for AI. While robots.txt tells search crawlers what to index, llms.txt tells large language models like ChatGPT, Claude, Gemini and Perplexity what your site is about, which pages matter most, and how to reference your content. This is the foundation of GEO (Generative Engine Optimization) and AEO (Answer Engine Optimization): the practice of getting cited correctly by AI assistants instead of just ranking in classic search. Enter your site name and a one-line summary, add as many link sections as you need — docs, guides, API reference, blog — with a name, URL and short description for each link, and optionally mark a section as "Optional" so agents know it can be skipped. A live preview shows the exact Markdown file as you type, your work is saved automatically in your browser, and you can download it as llms.txt to drop at the root of your site. Switch to Validate mode to paste an existing llms.txt and instantly check it against the spec — it flags a missing H1 title, malformed links, missing summary and more. Everything runs in your browser: nothing is uploaded, there is no signup and no watermark.
Features of Our llms.txt Generator
- Builds a spec-compliant llms.txt (llmstxt.org standard) with live preview
- Unlimited link sections, each with name, URL and description
- Special "Optional" section support for links agents may skip
- Validate mode — paste any llms.txt and get a spec-compliance report
- One-line summary (blockquote) and free-form intro notes
- Auto-saves your work in your browser and reloads it next time
- One-click copy and download as llms.txt
- 100% private and free — built entirely in your browser, no signup
How to Use the llms.txt Generator
The llms.txt Generator works right in your browser — no signup, no installation. Follow these steps:
- Enter your site or project name and a one-line summary.
- Add link sections (Docs, Guides, API, Blog) with a name, URL and description per link.
- Mark any secondary section as "Optional" so AI agents know it can be skipped.
- Check the live preview, then copy or download the file as llms.txt.
- Upload llms.txt to the root of your site (e.g. https://example.com/llms.txt).
Frequently Asked Questions About llms.txt Generator
What is llms.txt?
llms.txt is an emerging open standard (from llmstxt.org) — a Markdown file at the root of your site that tells AI models like ChatGPT, Claude, Gemini and Perplexity what your site is about and which pages to reference. Think of it as robots.txt, but for large language models.
Where do I put the llms.txt file?
At the root of your domain, served at /llms.txt (for example https://example.com/llms.txt), so AI crawlers and assistants can find it.
Does llms.txt help my SEO?
It supports GEO/AEO — getting your content discovered and cited accurately by AI answer engines. It complements, rather than replaces, your robots.txt, sitemap and on-page SEO.
Can I check a file I already have?
Yes. Switch to Validate mode and paste your existing llms.txt — the tool checks it against the spec and flags a missing title, malformed links, or a missing summary.
Is my data uploaded anywhere?
No. The file is generated and validated entirely in your browser. Nothing you type is sent to a server, and there is no signup or watermark.
Why Choose the llms.txt Generator?
The llms.txt Generator runs AI directly in your browser, on your device. There is no signup, no API key, and no upload — the model processes your input locally, so you get the result without handing your data to a third party.