Security Headers Checker

Analyze HTTP security headers and get recommendations to improve your website's security posture.

Paste HTTP Response Headers

Paste raw HTTP response headers or use the example to see how the analysis works.

About Security Headers

How to Get Headers

Use browser DevTools (Network tab) or cURL: curl -I https://example.com

Key Security Headers

  • Strict-Transport-Security - Enforces HTTPS
  • Content-Security-Policy - Prevents XSS attacks
  • X-Frame-Options - Prevents clickjacking
  • X-Content-Type-Options - Prevents MIME sniffing