HTTP Headers Check

Find out which HTTP headers your web server sends when requesting the specified URL

Enter a full URL (HTTP/HTTPS only)

Check results:

URL:
0 headers
Title Value
Note: Header check is performed using a HEAD request. Some servers may not support HEAD, in which case GET without body is used.

What are HTTP headers?

HTTP headers allow the client and server to pass additional information along with an HTTP request or response. They play an important role in:

  • Cache management
  • Security settings (CORS, CSP, HSTS, etc.)
  • Data compression
  • Session and cookie management
  • Content type detection

Important security headers:

  • Content-Security-Policy Protection against XSS
  • Strict-Transport-Security Forced HTTPS
  • X-Content-Type-Options Sniffing blocking
  • X-Frame-Options Protection against clickjacking
  • X-XSS-Protection Built-in XSS protection
  • Referrer-Policy Referrer transmission control