Free tool

HTTP Header Checker

Inspect status code, redirect chain, security headers and caching for any URL. Great for SEO audits and debugging.

Check a URL

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How it works

Inspect any URL like a browser would — without the browser

A real GET request, followed end-to-end through every redirect, with the security and caching headers broken out for you.

Step 1

We send a real request

A server-side fetch hits your URL with browser-style headers — no CORS, no client-side limits.

Step 2

Follow the redirect chain

Each 3xx hop is captured with its status, location and headers so you can debug loops and traps.

Step 3

Audit the final response

Status, security headers, caching and the full header list — laid out for fast SEO and infra review.

Security header audit

Instant verdict on HSTS, CSP, X-Frame-Options, Referrer-Policy and more — flagged when missing.

Cache + CDN signals

Spot stale caches, missing Cache-Control directives and CDN debug headers in one glance.

SEO redirect debugging

Catch redirect chains, 302→301 issues and broken canonical hops before Google does.