🛡️ Server HTTP Headers Checker

See the headers a server sends and which security and caching headers are missing.

📡 Live-data tool

Security headers

Caching

All response headers

How to use the Server HTTP Headers Checker

  1. Enter a URL.
  2. Press Check.
  3. Review the security audit, caching explanation and full header list.

Why creators use it

Good to know

Frequently asked questions

Which security headers matter most?

Strict-Transport-Security, Content-Security-Policy, X-Content-Type-Options and frame protection (frame-ancestors or X-Frame-Options).

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