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HTTP Headers & Redirect Chain

Inspect response headers and follow redirects, hop by hop. Paste any URL and hit Check.

Results will appear here…

What this tool does

This viewer fetches a URL with redirects disabled and prints every response hop with key headers. It helps debug issues like unexpected 301/302, cache misses, HSTS upgrades and bot protection (403/401).

For best coverage, test both http:// and https:// variants and check the location, cache-control, server, and content-type headers.

Server-sideProcessed server-side

This tool uses a server-side service for processing; uploaded files or requests are not kept for long-term storage.

About

This tool helps you troubleshoot web requests by showing the full redirect chain and response headers for each hop. It’s useful when a URL unexpectedly redirects, a CDN caches the wrong response, or you need to verify security headers like HSTS, CSP, and frame protections.

Paste a URL and the tool follows redirects and displays status codes, locations, and key headers per hop. This makes it easy to spot mixed HTTP/HTTPS issues, missing canonical redirects, wrong hostnames, or unexpected middleware behavior.

For reliable debugging, compare the final destination with what your browser shows and check whether intermediate hops return cache headers or set cookies. If you’re deploying SEO changes, this view also helps verify 301/302 behavior and canonical paths.

Common use cases include: validating canonical 301s after a migration, checking whether non-www → www rules are in place, and ensuring HTTPS is enforced without looped redirects. It also surfaces cache headers (Cache-Control, ETag, Age), so you can see if a CDN or reverse proxy is serving stale content.

Security teams can quickly confirm HSTS, CSP, frame-ancestors, X-Content-Type-Options, and referrer policies on the final response. DevOps can copy a ready-to-run curl command for each hop to reproduce issues locally. Product owners can verify that marketing redirects (UTM → landing) hit the right target without extra hops.

Long-tail checks you can solve here: “check http header online”, “follow redirect chain”, “301 302 tester”, “cache-control header checker”, “HSTS CSP verifier”, “canonical redirect checker”, “security header scan”, “copy curl with redirects”. Use the copy buttons to lift the exact URL, Location, headers or curl so you can paste them into tickets, monitoring, or CI tests.

How it works

  1. 1Open HTTP Headers & Redirect Chain and choose your file or enter the required input.
  2. 2Check the settings and start the process.
  3. 3The tool creates the result with temporary server-side processing.
  4. 4Download the output or copy the result when it is ready.

FAQ

›Why do I see multiple hops?
Many sites redirect from HTTP→HTTPS, from non-www→www (or the reverse), or through CDNs and edge layers.
›What’s the difference between 301 and 302?
301 is a permanent redirect; 302 is temporary. Search engines and caches may treat them differently.
›Which headers matter most for caching?
Cache-Control, Age, ETag, Last-Modified and CDN-specific headers are commonly used to understand caching behavior.
›Can this help with SEO redirects?
Yes. You can verify that old URLs redirect to the correct canonical destination and that there are no redirect loops.
›Why do results differ from my browser?
Different user agents, geo/CDN routing, cookies, and cached responses can produce different chains.