LLMS.txt Checker
Validate AI Crawler Files

Check whether a website has llms.txt, llms-full.txt, or llms-small.txt and preview AI crawler guidance for large language models.

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Experience complete SEO analysis features

Make LLMs read the right pages

llms.txt is a simple, public file that helps large language model crawlers understand what they should or should not read from your site.

What is llms.txt?

llms.txt is a lightweight, human-readable file placed at the root of your site.

It provides crawling guidance for AI assistants and other LLM-based systems, similar to how robots.txt guides traditional search crawlers.

With a clear llms.txt file, you can highlight your most important resources and reduce the risk of outdated or irrelevant pages being surfaced.

/llms.txt/robots.txt/sitemap.xml/.well-known/ai.txt

Official standard and documentation

The llms.txt initiative defines a common format for AI crawler guidance so publishers can set expectations in one place.

Use the official specification to align your file structure, fields, and best practices.

https://llmstxt.org/

Why add llms.txt?

Give AI systems the right context before they cite or summarize your site.

Clarify what matters

Point models to the most authoritative pages, documentation, or brand references.

Reduce content drift

Steer AI away from outdated, experimental, or duplicate pages.

Improve AI summaries

Provide context that helps assistants produce more accurate, on-brand answers.

Keep it simple

llms.txt is a single file that’s easy to publish and maintain.

llms.txt FAQ

Answers to common questions about llms.txt files.

Place it at the root of your domain, for example https://example.com/llms.txt, so crawlers can find it quickly.

It’s optional, but recommended. It gives LLM crawlers clearer guidance on what to read and cite.

robots.txt targets traditional web crawlers, while llms.txt is designed to guide AI and LLM-based crawlers.

Update it whenever your key pages change or when you want to highlight new resources for AI systems.

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LLMS.txt Checker
Validate AI Crawler Files

Check whether a website has llms.txt, llms-full.txt, or llms-small.txt and preview AI crawler guidance for large language models.

No Login RequiredCompletely FreeInstant Analysis

Experience complete SEO analysis features

Make LLMs read the right pages

llms.txt is a simple, public file that helps large language model crawlers understand what they should or should not read from your site.

What is llms.txt?

llms.txt is a lightweight, human-readable file placed at the root of your site.

It provides crawling guidance for AI assistants and other LLM-based systems, similar to how robots.txt guides traditional search crawlers.

With a clear llms.txt file, you can highlight your most important resources and reduce the risk of outdated or irrelevant pages being surfaced.

/llms.txt/robots.txt/sitemap.xml/.well-known/ai.txt

Official standard and documentation

The llms.txt initiative defines a common format for AI crawler guidance so publishers can set expectations in one place.

Use the official specification to align your file structure, fields, and best practices.

https://llmstxt.org/