Yes, it supports IDN characters. It supports: Albanian, Arabic, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Finish, French, German, Greek, Hungarian, Icelandic, Italian, Japanese, Korean, Latvian, Lithuanian, Luxembourgish, Macedonian, Moldavian, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Slovack, Slovenian, Spanish, Thai, Turkish, Ukranian, Ukranian IDN