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Paste robots.txt rules and a URL to simulate whether that URL is allowed or blocked by those rules, before you upload them.
Important: this is a simulation of the pasted rules only. It does not fetch a live robots.txt file and it does not crawl anything.
Robots.txt rules can block a page by accident, especially when a broad disallow rule covers a path you wanted indexed. Testing rules before you upload them helps you catch those mistakes early.
This tool simulates the rules you paste. Enter a URL, and it tells you whether the longest matching rule allows or blocks that path, using the standard longest match idea, with Allow winning a tie.
No. It simulates only the rules you paste. It does not fetch a live file and it does not crawl anything.
The longest matching rule wins. When an Allow rule and a Disallow rule match the same length, Allow wins in this simulation.
No. Robots.txt is a request to crawlers, not a guarantee, and different crawlers may behave differently.
No. Everything runs in your browser on your own device, so your text never leaves your computer.