Tools lab · AI SEO
Free llms.txt Generator
Generate a complete llms.txt file to optimize your website for ChatGPT, Claude, Perplexity and Google AI Overviews. Includes llms-full.txt, robots.txt AI rules and quality scoring. Free, no login required.
Generating your llms.txt file…
Analyzing site type · Building sections · Scoring quality
Fill in your website details on the left and click "Generate llms.txt".
Enable "Also generate llms-full.txt" and click Generate.
Generate your llms.txt first to see the robots.txt AI crawler rules.
Generate your llms.txt to see a quality score and improvement tips.
How this llms.txt generator works
Step 1
Enter site details
Provide your site name, URL, description, and key pages.
Step 2
AI generates file
DeepSeek AI builds your llms.txt following the official llmstxt.org spec.
Step 3
Review and download
Check quality score, copy or download the file and llms-full.txt.
Step 4
Deploy to your site
Upload to your domain root so AI crawlers can find it at /llms.txt.
Frequently asked questions
What is an llms.txt file?
An llms.txt file is a structured Markdown document placed at your website root (yoursite.com/llms.txt). Proposed by Jeremy Howard in September 2024, it tells AI models like ChatGPT, Claude, and Perplexity which pages matter most and what your site is about — in a clean format they can parse instantly, without processing heavy HTML or JavaScript.
Will llms.txt help my site appear in ChatGPT and Perplexity?
It improves how AI models understand and represent your brand. IDE agents like Cursor, Cline, and Continue actively fetch llms.txt when browsing documentation. For ChatGPT and Perplexity, the file provides structured context that helps them cite your site more accurately. The cost is near-zero and the benefit grows as adoption increases. Combine it with quality content and proper robots.txt rules for best AI visibility results.
What is the difference between llms.txt and llms-full.txt?
llms.txt is the curated index — a short list of your most important pages with one-line descriptions. llms-full.txt contains the full content of those pages concatenated as a single Markdown document, allowing AI models to ingest your entire key content in one file. Anthropic, Vercel, Stripe, and Cursor all use both files together.
What is the correct llms.txt format?
The file must be plain Markdown. It starts with an H1 heading (# Site Name, required), followed by a blockquote summary (> description), optional detail paragraphs, then ## sections containing Markdown links in the format: - [Page Title](URL): One-line description. An ## Optional section at the end marks lower-priority content that AI agents can skip when context is limited.
What is GEO — Generative Engine Optimization?
GEO is the practice of optimizing your website content for AI-powered search engines like ChatGPT, Perplexity, and Google AI Overviews — rather than traditional Google search. llms.txt is one component of a GEO strategy, alongside structured data, clear entity signals, and content that directly answers specific user questions.
How often should I update my llms.txt?
Regenerate whenever you add significant new content, change your services, or update pricing. For active blogs or news sites publishing daily, once a month is sufficient. The file should always reflect your current most important pages so AI models have accurate, up-to-date information about your site.
What should I include in my llms.txt file?
The most effective llms.txt files include: a precise factual description of what your site does, key pages with specific descriptions of what AI will find there, exact search queries you want to be the answer to, contact and verification links so AI can confirm your entity, and external references like LinkedIn or GitHub. Avoid marketing language — AI models read literally.
Is this llms.txt generator completely free?
Yes — 100% free, no account required, no watermarks, no hidden limits. AI Herald's llms.txt generator is powered by DeepSeek AI and available for unlimited use. Generate, download, and deploy as many times as you need.