Eckher Punycode Converter is an online tool for converting Punycode to Unicode (text) and vice-versa.
Punycode is an encoding used to write Unicode in ASCII. For example, the Punycode encoding of "例" is "fsq".
Punycode is most commonly used to encode internationalized domain names (IDNs). Generally speaking, these are defined as domain names that contain non-ASCII characters, e.g. "例.com". Punycode encoding allows these domain names to be represented in ASCII which enables compatibility with ASCII-based DNS protocols. This means that for example, when the user opens "例.com", they are actually viewing "xn--fsq.com".