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🌐 Punycode Converter

Client-side Punycode / IDN encoder and decoder with auto-direction, full-URL and email support, per-label breakdown, homograph advisory, and UTS #46 nontransitional processing

🔒 All encoding and decoding runs locally in your browser — input data is not uploaded by the tool. Implements RFC 3492 Punycode and UTS #46 nontransitional processing.

Direction

Examples

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Free online Punycode / IDN encoder and decoder — client-side. Converts full URLs (with scheme, userinfo, port, path, query, fragment), email addresses, and bare hostnames bidirectionally. Auto-detects direction, per-label breakdown, homograph advisory for mixed-script labels, and UTS #46 nontransitional processing. Pure RFC 3492, zero dependencies, input data is not uploaded by the tool.