Free Tool Guide
•
5 min read
How to Use the Free HTTP Header Checker
See a URL's status, redirects, and security headers in one request.
Try the Tool Now
Free, no signup required
HTTP response headers control caching, redirects, content type, and security — and they're invisible in a normal browser visit. When a page behaves strangely, the headers usually explain why.
The HTTP Header Checker requests a URL from our servers and shows you the status, the full redirect chain, and a security-header scorecard.
What you can read
- Status code — 200 OK, 301/302 redirects, 404, 5xx, and more
- Redirect chain — every hop from the URL you entered to the final page
- All response headers — caching, content type, server, and the rest
The security headers that matter
- Strict-Transport-Security (HSTS) — forces HTTPS
- Content-Security-Policy (CSP) — limits what can load on the page
- X-Content-Type-Options / X-Frame-Options — block sniffing and clickjacking
- Referrer-Policy / Permissions-Policy — control referrers and browser features