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LLMs.txt Generator & Validator
Create a spec-compliant llms.txt file for your website, or paste an existing one into the checker to validate its format — H1 title, sections, links, and structure — with every issue flagged and explained. Free, online, in your browser.
Enter your domain to auto-fetch sitemap and generate llms.txt. No email required — 100% free.
## Main URLs
Generate or Validate in 3 Steps
- 1
Generate: describe your site
Enter your site name, summary, and key page groups — the tool builds a correctly structured file.
- 2
Validate: paste any llms.txt
The checker verifies the H1 rule, blockquote, H2 sections, list-only content, and link syntax — with fixes for each issue.
- 3
Upload to your site root
Save as llms.txt at https://yourdomain.com/llms.txt (or /.well-known/llms.txt) and it is live for any AI crawler that looks.
What Is llms.txt?
llms.txt is a proposed standard (by Jeremy Howard, 2024) — a markdown file at your site root that hands AI models a curated map of your most important content. Where robots.txt says where crawlers may go, llms.txt says what actually matters here.
The logic: AI assistants have limited context windows and messy HTML to parse. A clean, human-curated index helps them summarize your site accurately and — the hope — cite the right pages when users ask questions your content answers. It is one small piece of the wider generative engine optimization playbook.
Example llms.txt
# ByteVerse > Free AI & SEO tools plus tested > tech guides for developers. ## Tools - [SEO Title Checker](https://…): score titles - [Meta Tag Generator](https://…): SEO tags ## Guides - [Rank in AI Search](https://…): GEO guide - [Local AI Setup](https://…): run LLMs offline
llms.txt Format Rules the Validator Checks
Six rules make a file spec-compliant — break one and parsers may skip your content.
Start with one H1 title
# Your Site Name — required, exactly one.
Optional blockquote summary
> One or two lines describing the site, right after the H1.
H2 sections for categories
## Docs, ## Blog, ## Tools — group related links.
Lists only inside sections
Each H2 contains list items with markdown links, not paragraphs.
Markdown links with context
[Page title](url): one-line description of what's there.
No sensitive data
Skip emails, phone numbers, and anything you would not want quoted by an AI.
Does Google Use llms.txt? (The Honest Answer)
No. Google has stated it does not use llms.txt, and as of 2026 no major AI provider has officially committed to reading it — though several AI crawlers fetch it in the wild. Treat it as a five-minute, zero-risk bet on an emerging convention, not a ranking tactic. The AI-visibility work with proven payoff is elsewhere: crawlable content, answer-first structure, schema markup, and the fundamentals in our AI search ranking guide. Do those first; add llms.txt after.
Frequently Asked Questions
What is llms.txt and what does it do?
llms.txt is a proposed standard — a markdown file at your site root that gives AI models a concise, curated map of your most important pages. Think robots.txt's cousin: robots.txt controls crawler access, llms.txt describes what matters.
How do I check if my llms.txt file is valid?
Paste it into the validator above — it checks the H1 title requirement, blockquote summary, H2 section structure, list formatting, and link syntax, and flags every issue with a fix.
Does Google use llms.txt?
No — Google has said it does not use llms.txt, and no major AI provider has officially committed to it. Some AI crawlers fetch it anyway. Honest advice: it costs five minutes and may help emerging AI tools understand your site, but do not expect ranking effects.
Does llms.txt affect SEO?
Not traditional rankings. It belongs to the AI-visibility toolkit — alongside clean structure, schema markup, and crawlable content — aimed at how AI assistants summarize and cite your site rather than how Google ranks it.
Can I have both robots.txt and llms.txt?
Yes, and you should — they do different jobs. robots.txt controls which crawlers may access which paths; llms.txt offers AI models a curated content overview. They live side by side at your domain root.
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