Troubleshoot website, network, and CDN issues for fast resolutions.

HTTP Header Checker

Analyze HTTP response headers

HTTP Header Checker FAQ

What is the HTTP Header Checker tool?

The HTTP Header Checker tool is an online curl test. It allows the HTTP response headers of any URL to be analyzed. Optionally send custom Referer and X-Pull request headers as well as content encoding options, like Brotli and Gzip. The results returned will give the complete curl output.

The HTTP Header Checker tool can be used to verify server configurations, like checking whether or not hotlink protection and file compression has been set up correctly.

What HTTP status codes are there?

  • 2xxSuccessful
  • 3xxRedirection
  • 4xxClient error
  • 5xxServer error
  • errorConnection error

What is curl?

curl is an open source command line tool used for transferring data with URL syntax, like in the case of this tool, HTTP and HTTPS requests.

Get started for free

Try KeyCDN with a free 14 day trial, no credit card required.

Get startedPricing
KeyCDN uses cookies to make its website easier to use. Learn more about cookies.