Security Headers Analysis Tool

Grade Your Site's HTTP Headers Instantly

Security. Performance. Privacy. Get a real-time score for your HTTP headers.

Note: Some sites with bot protection (like Cloudflare) may block our scanner.

No login. No tracking. 100% free.

Security
Performance
Privacy
Education

What Do These Headers Mean?

Understanding HTTP headers is crucial for web security and performance. Click on each header to learn more.

Learn more about HTTP headers
Features

Why Use HeaderGrade?

Our tool provides comprehensive analysis of HTTP headers to help you improve your website's security, privacy, and performance.

Comprehensive

Scans headers across security, privacy, and performance categories for a complete assessment of your website.

  • Security header analysis
  • Privacy header evaluation
  • Performance header review

Instant

Real-time scan using live server response. Get results in seconds, not minutes.

  • Fast response times
  • Real-time header analysis
  • Immediate security insights

Private

We don't log or store anything. Your data stays private and secure.

  • No data storage
  • No account required
  • 100% free to use
15+

Security Headers Analyzed

100%

Free & Open Source

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Average Scan Time