HTTP Header Checker
Enter any URL to inspect its HTTP response headers and follow the full redirect chain hop by hop: status codes, caching, security and server headers. Free.
About HTTP Header Checker
The HTTP Header Checker fetches any URL server-side and shows the complete response headers along with the full redirect chain, hop by hop. You see every intermediate status code (301, 302, 307) the URL each hop points to, and the final status, which makes it easy to spot redirect loops, unnecessary hops or an HTTP-to-HTTPS chain that wastes crawl budget.
Beyond redirects, the final response headers reveal caching directives (Cache-Control, ETag), the server signature, content type, cookies flags and compression. The tool also runs a quick security audit, flagging which of the commonly scanned security headers are present or missing: Strict-Transport-Security, Content-Security-Policy, X-Content-Type-Options and X-Frame-Options.
The check runs from our server, so it reflects what a real external client receives rather than what your browser cache shows. Chains are followed for up to 10 hops, lookups are rate-limited, and results are cached for a few minutes.
How to use HTTP Header Checker
- Enter the full URL you want to inspect, including https://.
- Click “Check headers” and wait a moment while the server fetches the response.
- Read the redirect chain to see each hop, its status code and the final status.
- Review the response headers table for caching, content and server details.
- Check the security section for present and missing security headers.
- Use “Copy all headers” to paste the raw list into a ticket or audit document.