Free website tool

Free llms.txt Checker

Verify if your website has a /llms.txt file — the emerging standard for letting AI assistants like ChatGPT, Claude, and Perplexity understand your site. Get quality scoring and recommendations.

GEO & AI Readiness

Methodology

1Fetches /llms.txt from the target domain's root and checks for presence, valid markdown formatting, and content quality.
2Scores the file on 5 key factors: file existence, proper heading structure, site description clarity, key page links, and documentation references.
3Also checks if the site's robots.txt allows AI crawlers to access the llms.txt file.

Next steps

What to do with your results

→Create a /llms.txt file at your domain root — use markdown format with a clear site title and description.
→List your 5-10 most important pages with brief descriptions — these help AI assistants understand your site structure.
→Include links to documentation, API references, or help articles if applicable.
→Add a ## Contact or ## About section with your organization name and purpose.
→Test that the file is publicly accessible and not blocked by robots.txt or authentication.

Learn more

Frequently asked questions

llms.txt Checker — Common questions

Is the llms.txt Checker on CheckWebs really free?+

Yes — the llms.txt Checker is 100% free with no signup, no account, and no usage limits. Just enter a URL and get instant results.

How accurate is the llms.txt Checker?+

Our llms.txt Checker runs live checks against the target website in real time. Results reflect the current state of the site at the moment you run the check — not cached or historical data.

What is llms.txt and why does my site need it?+

llms.txt is an emerging standard (like robots.txt but for AI). It helps AI assistants like ChatGPT, Claude, and Perplexity understand your site structure, key pages, and documentation.

Where do I put the llms.txt file?+

Place it at the root of your domain: https://yourdomain.com/llms.txt. Use markdown format with headings, descriptions, and links to important resources.

Does llms.txt affect Google rankings?+

Not directly as of 2026. But it improves your visibility in AI-powered search engines and assistants, which are becoming a major traffic source.

Loading CheckWebs…

Home/Tools/GEO & AI Readiness/llms.txt

Free website tool

Free llms.txt Checker

Verify if your website has a /llms.txt file — the emerging standard for letting AI assistants like ChatGPT, Claude, and Perplexity understand your site. Get quality scoring and recommendations.

GEO & AI Readiness

Methodology

1Fetches /llms.txt from the target domain's root and checks for presence, valid markdown formatting, and content quality.
2Scores the file on 5 key factors: file existence, proper heading structure, site description clarity, key page links, and documentation references.
3Also checks if the site's robots.txt allows AI crawlers to access the llms.txt file.

Next steps

What to do with your results

→Create a /llms.txt file at your domain root — use markdown format with a clear site title and description.
→List your 5-10 most important pages with brief descriptions — these help AI assistants understand your site structure.
→Include links to documentation, API references, or help articles if applicable.
→Add a ## Contact or ## About section with your organization name and purpose.
→Test that the file is publicly accessible and not blocked by robots.txt or authentication.

Learn more

Frequently asked questions

llms.txt Checker — Common questions

Is the llms.txt Checker on CheckWebs really free?+

Yes — the llms.txt Checker is 100% free with no signup, no account, and no usage limits. Just enter a URL and get instant results.

How accurate is the llms.txt Checker?+

Our llms.txt Checker runs live checks against the target website in real time. Results reflect the current state of the site at the moment you run the check — not cached or historical data.

What is llms.txt and why does my site need it?+

llms.txt is an emerging standard (like robots.txt but for AI). It helps AI assistants like ChatGPT, Claude, and Perplexity understand your site structure, key pages, and documentation.

Where do I put the llms.txt file?+

Place it at the root of your domain: https://yourdomain.com/llms.txt. Use markdown format with headings, descriptions, and links to important resources.

Does llms.txt affect Google rankings?+

Not directly as of 2026. But it improves your visibility in AI-powered search engines and assistants, which are becoming a major traffic source.

Free llms.txt Checker

Methodology

What to do with your results

Related guides

llms.txt Checker — Common questions

Free llms.txt Checker

Methodology

What to do with your results

Related guides

llms.txt Checker — Common questions