llms.txt validator
Is your llms.txt
doing its job?
Enter a domain. We check it against the official spec, test that every link actually works, and tell you exactly what to fix — in seconds.
Spec-perfect structure
H1 title, blockquote summary, H2 link sections and list formatting — checked against the official llms.txt specification.
Real link checks
Most tools only lint text. We actually request every linked URL and flag the broken ones, so crawlers never hit dead ends.
Clear fixes
Every issue comes with a plain-English recommendation and a 0–100 score across structure, links, and best practices.
How it works
- 1Enter a domain. We resolve and fetch
/llms.txtfor you. - 2We validate. Structure, formatting, and every link is checked concurrently.
- 3You get a report. A score plus a prioritized, fixable list of findings.
Frequently asked questions
What is llms.txt?
A small Markdown file at your site's root that gives AI models a clean, curated map of your most useful pages — so they understand and cite your content accurately.
Is this validator free?
Yes. It's completely free with no signup — enter a domain or paste your file and get an instant report.
What does the validator check?
Structure against the official spec, that every linked URL is reachable, and best practices like HTTPS links and descriptions — scored 0–100.
Where should I put my llms.txt file?
At your domain root, served as plain text from /llms.txt — for example, https://example.com/llms.txt.
Does llms.txt help SEO?
Not Google rankings directly. It helps AI assistants and answer engines understand and cite your content, which matters more as search shifts to AI.