IDN Web Converter
Application to convert the native form of an IDN (U-label) into its ASCII string (ACE form) in the DNS (A-label) and vice versa.
The conversion is performed according to the current IDNA standard (RFCs 5890 to 5894), with support for Unicode 5.2 and using IDNA Compatibility Processing in ‘nontransitional’ mode from Unicode Technical Standard #46.