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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
       override	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 pro-
	      files: 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 com-
       mand

	      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+14.3.quarterly>

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