HTTP Header Checker

Inspect HTTP response headers, redirect chains, and security header coverage for any URL or hostname.

What does this tool check?

This tool sends an HTTP HEAD request to the URL and returns all response headers. It follows redirect chains (up to 5 hops), showing the full path from the original URL to the final destination. Each hop's status code and headers are displayed.

Security headers are highlighted and any missing critical security headers are flagged. The eight security headers checked are: Strict-Transport-Security, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, Cross-Origin-Opener-Policy, and Cross-Origin-Embedder-Policy.