Robots.txt Tester

Fetch a domain robots.txt and see which bots and paths are allowed or blocked.

Free · No sign-up · Includes GPTBot and ClaudeBot

Robots.txt Tester FAQ

How does the robots.txt tester decide allowed or blocked?

It fetches /robots.txt, groups rules by User-agent, applies the most specific matching rule, and treats Allow as the winner when rule lengths tie.

Can I test AI crawlers like GPTBot and ClaudeBot?

Yes. GPTBot, ClaudeBot, and PerplexityBot are included by default, and you can add any other bot name before running the test.

Does robots.txt prevent indexing?

No. robots.txt controls crawling. A blocked URL can still be indexed if other pages link to it. Use noindex for pages that should not appear in search.

What happens if a site has no robots.txt?

Most crawlers treat a missing robots.txt as permission to crawl everything that is otherwise accessible.

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