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Robots.txt & Security.txt Checker

Free online robots.txt checker. Scan any website to validate robots.txt directives, find SEO issues and sensitive path exposure, and verify security.txt follows RFC 9116. Get instant analysis of crawl directives and responsible disclosure configuration with actionable recommendations.

No https:// needed · Free · No credit card

What We Check

Robots.txt syntax validation
Disallow directive analysis
Sitemap reference check
Security.txt RFC 9116 validation
Sensitive path exposure detection
Crawl budget optimization tips

How It Works

1

Enter your website domain

2

We fetch /robots.txt and /.well-known/security.txt

3

Robots.txt directives are parsed and checked for common mistakes

4

Security.txt is validated against RFC 9116 requirements

5

You receive actionable recommendations for both files

Security Checks Included

This tool runs the following security checks on your website

robots.txt Configurationsecurity.txt ConfigurationSensitive Files Exposure

Frequently Asked Questions

What is a robots.txt checker?
A robots.txt checker is a free online tool that fetches and analyzes your website's robots.txt file. It validates syntax, checks for SEO issues (blocking important pages), detects sensitive path exposure through Disallow directives, and verifies your security.txt file meets RFC 9116 requirements.
How do I check my robots.txt file?
Enter your domain name in the robots.txt checker above. We'll fetch your robots.txt, parse all directives, check for common mistakes, and also validate your security.txt file — showing you specific recommendations for both.
What is robots.txt?
Robots.txt is a text file at your domain root that tells search engine crawlers which pages to index and which to skip. Misconfigured robots.txt can accidentally block important pages from Google or expose sensitive internal paths to attackers.
Can robots.txt leak sensitive information?
Yes. Disallow directives inadvertently reveal the existence of admin panels, staging environments, and internal tools — attackers routinely check robots.txt first to find hidden paths. Our checker flags any sensitive-looking paths in your Disallow rules.
What is security.txt?
Security.txt (RFC 9116) is a standard file at /.well-known/security.txt that tells security researchers how to report vulnerabilities responsibly. It should include Contact, Expires, and optionally Encryption and Policy fields.
Do I need both robots.txt and security.txt?
Yes. Robots.txt is essential for SEO and controlling crawler access. Security.txt is an IETF-recommended best practice that enables responsible disclosure — without it, researchers may give up or disclose publicly.
Is this robots.txt checker free?
Yes, our robots.txt and security.txt checker is completely free. It's part of SecScanner's free toolkit that runs 60+ security checks covering SSL, HTTP headers, DNS, cookies, and more.

Ready to Check Your Website?

Run a free security scan now and get instant results with actionable fix recommendations.

No https:// needed · Free · No credit card

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