⚡ 100% Free • RFC 9309 Compliant • Instant Crawler Simulator

Free Robots.txt Validator & Testing Tool

Validate your robots.txt syntax, check for catastrophic crawling blocks, inspect XML sitemaps, and test URL access across Googlebot, Bingbot, and modern AI crawlers.

Fetch Robots.txt from Website (or Edit Below)

Quick Templates:

Robots.txt Content Editor

Lines: 0 | Size: 0 bytes
1

Live Crawler Simulator

Test whether search crawlers or AI bots are permitted or blocked from accessing specific URL paths.

ALLOWED Access Permitted

Matching rule details will appear here.

Syntax Validation & Health Diagnostics

Validating...
0
Syntax Errors
0
Warnings
0
Sitemaps Found
0 KB
File Size (Max 500KB)

Technical SEO Recommendations & Best Practices