Punycode Encoder

Encoders & Decoders

Convert Unicode domain names into ASCII-based Punycode.

About This Tool

Essential tool for web developers to convert internationalized domain names (IDN) containing special characters or emojis into the ASCII-compatible Punycode format.

Frequently Asked Questions

Punycode is a special encoding used to convert Unicode characters (like those in non-English languages or emojis) into a limited set of ASCII characters for DNS compatibility.

The Domain Name System (DNS) historically only supports ASCII characters. Punycode allows internationalized domain names (IDN) to work within this existing infrastructure safely.

Punycode strings always begin with the prefix "xn--". This tells browsers and servers that the following characters represent an encoded Unicode string.

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