HTTP Header Checker

Inspect a URL’s HTTP status, response headers, and redirect chain. Choose HEAD or GET, follow redirects, and spot caching & security issues fast.

Also try our Meta Title & Description Checker, Canonical Tag Checker, Open Graph Checker, Hreflang Validator, Robots.txt Tester, Sitemap Inspector, Broken Link Checker.

What Is an HTTP Header Checker?

An HTTP Header Checker requests a URL and shows the status code, response headers, and any redirect hops. It’s essential for diagnosing canonicalization, caching, content type, and security policies such as HSTS and CSP.

What This Tool Shows

Status & final URL: 200/301/302/404/410/5xx, plus the resolved destination
Redirect chain: Each hop’s status, IP, and Location target
Headers: Content-Type, Cache-Control, Expires, ETag, Vary, Set-Cookie, Strict-Transport-Security, Content-Security-Policy, and more
Hints: Quick notes about caching and security header presence

Tips for Better SEO & Performance

Prefer 301 for permanent redirects; avoid long redirect chains.
Send a clear Content-Type with a charset for HTML pages.
Use caching headers (Cache-Control, ETag) for static assets.
Set HSTS (Strict-Transport-Security) and consider CSP for security.

Pro tip: Some servers block HEAD with 405. In Auto mode we retry with a lightweight GET to retrieve headers.