HTTP Header Checker
Enter a URL to see its status code, full redirect chain, and every response header — exactly what a browser or search crawler receives from the server.
What the server really sends
Response headers are the layer most SEO problems hide in. A page can look perfect in the browser while an X-Robots-Tag: noindex quietly keeps it out of Google, or a chain of 302s bleeds ranking signals on every hop. None of that shows up on the page — only in the headers.
This checker lays them out plainly, highlighting the ones that matter for SEO and speed. To grade just the security headers with fix code, use the security header checker; to audit everything at once, run the full scan from the homepage.
Frequently asked questions
What does an HTTP header checker show?
It fetches a URL and shows the server’s response: the status code, the full redirect chain if any, and every response header — content-type, cache-control, content-encoding, x-robots-tag, last-modified, server, and the rest. It’s how you see what a browser or crawler actually receives.
Which headers matter for SEO?
X-Robots-Tag can noindex a page at the header level (easy to miss), Content-Type must be correct for the page to render, Cache-Control and Content-Encoding affect speed, and the Link header can carry canonical or preload hints. Redirect status codes (301 vs 302) matter for how ranking signals pass.
Why does the redirect chain matter?
Every extra hop adds latency and can dilute or drop signals — and a chain that mixes 302s where 301s belong, or loops back on itself, is a real SEO problem. Seeing the full chain with each status code is the fastest way to catch it.
Does it follow redirects?
Yes — it follows up to 10 hops and shows each one with its status code and destination, then lists the headers of the final response. Every hop is re-checked so it never fetches an unsafe internal address.
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This tool solves one thing.
Scan a live URL against 100 on-page checks — with the code to fix each issue.
Analyze any URL free