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Punycode Converter

Convert internationalized domain names (IDN) to and from Punycode (RFC 3492). All processing happens in your browser.

Unicode (IDN)
Punycode (ACE)

How it works

Internationalized Domain Names (IDN) contain non-ASCII characters like accented letters, Chinese, Arabic, etc. Punycode encodes these labels using the bootstring algorithm (RFC 3492) so they can be represented in the DNS as ASCII strings prefixed with xn--.

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