IDN Punnycode converter
IDN Punycode Converter — Encode and Decode International Domain Names
Convert international domain names (IDN) containing Unicode characters to their ASCII-compatible Punycode representation and back. Punycode allows domain names in non-Latin scripts (Arabic, Chinese, Cyrillic, emoji) to be represented in the DNS system. Essential for developers building internationalized web applications and email systems.
IDN Punycode Conversion Use Cases
- Converting Unicode domain names to ASCII for DNS registration
- Decoding Punycode URLs in phishing and security research
- Internationalized email address handling (RFC 5321)
- Domain validation in internationalized web forms
- SEO analysis of IDN domain name optimization
- Testing internationalization in web applications and APIs
Punycode encoding converts "münchen.de" to "xn--mnchen-3ya.de" for DNS compatibility while preserving the original Unicode display. This conversion is critical for web developers handling international traffic, email servers processing IDN addresses, and security researchers investigating homograph attacks (lookalike domain phishing). Quickly convert in both directions to debug internationalization issues.
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