Validate, test, and generate robots.txt files. Check if Googlebot can crawl your URLs, diagnose syntax issues, and build compliant rules. No uploads, 100% private.
Your robots.txt controls how search engines crawl your site. Verify it is working correctly with our free checker:
Many robots.txt validators only show a syntax pass/fail. This tool goes further: it tests real URLs against your directives, checks RFC 9309 compliance, and flags the exact mistakes that silently block crawlers - all without uploading your file to any server.
A robots.txt file is a plain text file placed at the root of a website that tells search engine crawlers which URLs they may or may not crawl. It follows the Robots Exclusion Protocol (RFC 9309).
Paste your robots.txt rules into the checker and enter the URL you want to test. The tool evaluates every directive against the URL and tells you whether Googlebot, Bingbot, or other crawlers are allowed or disallowed.
Yes, the Generator tab lets you build a clean, valid robots.txt from templates, add User-agent, Allow, Disallow, and Sitemap directives, preview the result, and copy or download it.
No. The checker parses and tests everything locally in your browser. Paste your robots.txt content and your data never leaves your device.
It detects missing Sitemap directives, invalid characters, incorrect directive order, conflicting rules, disallowing CSS/JS files, using wildcards incorrectly, and non-RFC-compliant syntax.
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