HTTP Headers Checker
Enter a URL to see exactly what the server sends back — status, redirects, caching, and which security headers are missing.
Processed on our server, nothing is storedResponse
Redirect chain
Security headers
All response headers
How to use HTTP Headers Checker
- Enter a URL (https:// is added if you leave it out).
- Click Check.
- Review the redirect chain, security headers and the full header list.
Questions
Which security headers matter most?
Strict-Transport-Security (HSTS), Content-Security-Policy, X-Content-Type-Options and a frame-ancestors or X-Frame-Options rule protect against the most common attacks.
Can I check internal or localhost URLs?
No. For safety, only public websites on the standard ports 80 and 443 can be checked.