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IDN(1)				  User Commands 			  IDN(1)

NAME
     idn - Internationalized Domain Names command line tool

SYNOPSIS
     idn [OPTION]... [STRINGS]...

DESCRIPTION
     Internationalized Domain Name (IDN) convert STRINGS, or standard input.

     Command line interface to the internationalized domain name library.

     All  strings  are	expected  to be encoded in the preferred charset used by
     your locale.  Use --debug to find out what this charset is.  You can  over-
     ride the charset used by setting environment variable CHARSET.

     To  process  a string that starts with '-', for example '-foo', use '--' to
     signal the end of parameters, as in: idn --quiet -a -- -foo

     Mandatory arguments to long options are mandatory for short options too.

     -h, --help
	    Print help and exit

     -V, --version
	    Print version and exit

     -s, --stringprep
	    Prepare string according to nameprep profile

     -d, --punycode-decode
	    Decode Punycode

     -e, --punycode-encode
	    Encode Punycode

     -a, --idna-to-ascii
	    Convert to ACE according to IDNA (default mode)

     -u, --idna-to-unicode
	    Convert from ACE according to IDNA

     --allow-unassigned
	    Toggle IDNA AllowUnassigned flag (default off)

     --usestd3asciirules
	    Toggle IDNA UseSTD3ASCIIRules flag (default off)

     --no-tld
	    Don't check string for TLD specific rules Only  for  --idna-to-ascii
	    and --idna-to-unicode

     -n, --nfkc
	    Normalize string according to Unicode v3.2 NFKC

     -p, --profile=STRING
	    Use  specified stringprep profile instead Valid stringprep profiles:
	    Nameprep iSCSI Nodeprep Resourceprep trace SASLprep

     --debug
	    Print debugging information

     --quiet
	    Silent operation

AUTHOR
     Written by Simon Josefsson.

REPORTING BUGS
     Report bugs to: help-libidn@gnu.org
     GNU Libidn home page: <https://www.gnu.org/software/libidn/>
     General help using GNU software: <https://www.gnu.org/gethelp/>

COPYRIGHT
     Copyright (C) 2025 Simon Josefsson.  License GPLv3+: GNU GPL version  3  or
     later <https://gnu.org/licenses/gpl.html>.
     This  is  free software: you are free to change and redistribute it.  There
     is NO WARRANTY, to the extent permitted by law.

SEE ALSO
     The full documentation for idn is maintained as a Texinfo manual.	 If  the
     info and idn programs are properly installed at your site, the command

	    info idn

     should give you access to the complete manual.

GNU Libidn 1.43 		  January 1970				  IDN(1)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=idn&sektion=1&manpath=FreeBSD+Ports+15.1.quarterly>

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