c: Copyright (C) Daniel Stenberg, , et al. SPDX-License-Identifier: curl Long: include Short: i Help: Include protocol response headers in the output See-also: verbose Category: important verbose Example: -i $URL Added: 4.8 Multi: boolean --- Include the HTTP response headers in the output. The HTTP response headers can include things like server name, cookies, date of the document, HTTP version and more... 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 error reported by server.