RFC 3492 Punycode encode & decode for internationalized domain names (xn--). Punycode / IDN Converter is a free online tool from the ToolsRift Encoders & Decoders collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
Pick To ASCII or To Unicode and enter a domain. Encoding converts each non-ASCII label to its xn-- Punycode form; decoding turns xn-- labels back into readable Unicode.
An RFC 3492 encoding that represents Unicode domain labels using only ASCII, prefixed with xn--. It lets internationalized domains work in the ASCII-only DNS.
Only the label with non-ASCII characters is encoded. 'bücher' becomes 'bcher-kva' and gains the xn-- prefix; the .com stays untouched.
Yes — any Unicode code point, including emoji and non-Latin scripts, round-trips correctly through the encoder and decoder.