IDN Punycode Converter & Domain Name Translator

Our IDN Punycode converter translates internationalized domain names between their native Unicode representation and the ASCII-compatible Punycode encoding required by DNS systems, bridging the gap between human-readable non-Latin scripts and the underlying internet infrastructure. Domain registrars and web hosting companies serving global markets use Punycode conversion daily when registering domains containing Arabic, Chinese, Cyrillic, or other non-Latin characters, as the DNS protocol fundamentally requires ASCII encoding for all domain lookups. Web developers building applications that accept user-submitted URLs must convert international domains to Punycode before performing DNS lookups or establishing HTTPS connections, as SSL certificate validation and server name indication both operate on the ASCII representation. Cybersecurity analysts investigating phishing campaigns examine Punycode representations to identify homograph attacks where attackers register domains using visually similar characters from different scripts to impersonate legitimate brands. SEO professionals working on multilingual websites ensure that internationalized domain names correctly resolve and that backlink profiles properly attribute links to both IDN and Punycode variants of domains. Email system administrators configure mail servers to handle internationalized email addresses by converting domain portions to Punycode while preserving local parts in their native encoding. The converter handles both directions, translating from Unicode IDN to Punycode ASCII and from the xn-- prefixed ASCII form back to readable Unicode text. All conversion occurs entirely within your browser using JavaScript, guaranteeing that domain names you process remain private and never transmitted to external servers. Simply enter an international domain name or Punycode string to see the equivalent representation instantly. Use this translation tool for domain registration, web application development, security analysis, multilingual SEO, and email system configuration.