HTTP headers let the client and the server pass additional information with an HTTP request or response. An HTTP header consists of its case-insensitive name and its value. Whitespace before the value is ignored.

Request headers contain more information about the resource to be fetched, or about the client requesting the resource.

Response headers hold additional information about the response, like its location or about the server providing it.

Try using ModHeader to change the HTTP headers below!

Request headers

Response headers