Networking tools

HTTP Headers Checker

Inspect response headers and evaluate common browser security protections.

Security Checks Ready

Enter a URL and run a check.

Request Summary

Status, final URL, and redirect count will appear here.

Response Headers 0 headers

Header	Value
Run a check to inspect headers.

Redirect Chain

Redirect chain will appear here when available.

Check HTTP headers before they become a browser security gap

This HTTP Headers Checker helps developers, site owners, and SEO teams inspect the response headers a browser can read for any URL. Use it to review Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, redirects, status codes, cache behavior, and CORS hints.

For a dedicated website security header scanner with a focused audit workflow, HeaderSec is useful when you want to validate hardening work, compare production and staging environments, or share a clean security headers report after updating server, CDN, or application configuration.