HTTP Header Checker
NEWEnter any URL to see the HTTP response headers its server sends back.
How to use HTTP Header Checker
Headers are fetched by our server on your behalf, since a browser can't read cross-origin response headers directly.
- Enter a URL, e.g. example.com.
- Press Enter or click check.
- The response headers that URL's server sent back are listed.
Frequently asked questions
Does it follow redirects to show me the final destination's headers?
No — the fetch is made with redirects disabled, so if the URL redirects, you'll see that redirect response itself (a 301/302 status and its Location header) rather than the headers from wherever it points to.
If I leave off https://, does it still check the exact path I typed?
Not quite — without a protocol prefix, only the hostname is used for the actual request, so a value like "example.com/some-page" ends up checking the site's root instead of that specific page. Include the full https://example.com/some-page to check a particular path.
Why does this run as a server-side check instead of directly in my browser?
Browsers block JavaScript from reading most response headers on a cross-origin request — there's no way around that purely client-side, so the request happens on our server and the result is passed back to you.
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