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HTTP Headers Checker

See a URL's HTTP response headers and check its security headers.

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How to use the HTTP Headers Checker

  1. 1

    Enter a URL.

  2. 2

    Choose whether to follow redirects.

  3. 3

    Review the status code, every response header and the security header checklist.

Frequently asked questions

Is my request private?

Our server sends a request to the site you enter and shows you what came back. Nothing is stored, and the site sees our server, not you.

Which security headers matter most?

Strict-Transport-Security, Content-Security-Policy and X-Content-Type-Options give the most protection; X-Frame-Options, Referrer-Policy and Permissions-Policy add more.