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robots.txt Tester & Analyzer – Check Crawl Rules Easily

Simulate Google-compatible robots.txt crawl rules – no crawling, no APIs.

Want to know if your robots.txt file is configured correctly? Our robots.txt tester simulates the behavior of Googlebot and other crawlers – directly in your browser, no login required, no external APIs.

Simply paste your robots.txt content, enter the URL to check, and select the user-agent. The tool instantly shows you whether the URL is allowed or blocked – and why.

What is a robots.txt?

The robots.txt is a simple text file located in the root directory of your website. It tells search engine crawlers which pages they may visit and which they may not.

When Googlebot visits your website, it reads the robots.txt first – before opening any other page. A misconfigured file can cause important pages not to be indexed, or your entire backend to be accidentally visible to crawlers.

Common Mistakes in robots.txt

These mistakes are particularly common – and all of them can be identified immediately with our tester:

How does the robots.txt tester work?

The tester follows the same rules as Google's official Robots.txt parser – fully client-side with no data transfer to servers. Here's how to use it:

  1. Paste robots.txt content – Copy the content of your robots.txt file into the text field. You can find it at https://yourdomain.com/robots.txt
  2. Enter URL – Enter the URL you want to check, e.g. https://yourdomain.com/wp-admin/
  3. Select user-agent – Choose which crawler you want to test the rule for: Googlebot, GPTBot, or any other.
  4. Read the result – The tool shows you the matched group, the applicable rule, and a plain-language explanation.

Who is this tool for?

The robots.txt tester is particularly useful for WordPress developers and site owners, SEO agencies and freelancers, webmasters conducting technical SEO audits, and anyone who wants to protect their website from AI crawlers.

Frequently Asked Questions

Is the robots.txt tester free?

Yes, the tester is completely free and requires no registration.

Is my data stored?

No. The analysis runs entirely in your browser. Your robots.txt content and URLs are not transmitted to or stored on any server.

Which user-agents can I test?

You can test Googlebot, GPTBot, and any other user-agents. The tool shows you which group and rule applies to each crawler.

What does Crawl-delay mean?

The Crawl-delay directive tells crawlers how many seconds to wait between requests. Google officially ignores this directive – however, other crawlers like Bingbot do respect it.

My robots.txt is accidentally blocking important pages – what should I do?

First check with our tester which rule is being applied. Often it's enough to add an Allow directive or remove a Disallow directive. After making the change, you can test the new version again before going live.