Converts punycode domains to unicode and vice-versa.
Download the latest release from https://github.com/jakewarren/punycoder/releases
go get github.com/jakewarren/punycoder
Simply provide either a punycode (IDN) or Unicode domain and it will be converted automagically.
$ punycoder bücher.example.com
xn--bcher-kva.example.com
$ punycoder xn--bcher-kva.example.com
bücher.example.com