--show-headers

Show response headers in the output. HTTP response headers can include things like server name, cookies, date of the document, HTTP version and more. With non-HTTP protocols, the "headers" are other server communication.

This option makes the response headers get saved in the same stream/output as the data. --dump-header exists to save headers in a separate stream.

To view the request headers, consider the --verbose option.

Prior to 7.75.0 curl did not print the headers if --fail was used in combination with this option and there was an error reported by the server.

This option was called --include before 8.10.0. The previous name remains functional.