HTTP Header Checker
Enter a URL to see the HTTP response headers returned by the server.
Check your server is returning the correct headers
View HTTP response headers
Our free HTTP header checking tool makes a request to the web server URL you provide and displays the response header names and values.
Check security headers, content types, and more
The response headers provide a range of information, from the Content Security Policy that's been set up to resource MIME types and server settings.
Helpful Explanations
Hover over the info icon to view an explanation of what each header means.
What are HTTP headers?
Server responses: status codes, headers, and the body
When a resource is requested from a web server, the server provides a status code and a list of response headers in addition to the response itself.
HTTP headers provide additional information
HTTP headers tell the browser how to handle the response (for example how long it can be cached for) or they can provide debug data for developers.
Learn More About HTTP Headers And Website Optimization
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