Punycode Converter

Convert international domain names to punycode (xn--) and back to verify IDN conversions.

Punycode Converter translates internationalized domain names into the punycode strings that DNS servers and browsers actually handle, then converts them straight back to readable characters. Paste any IDN address and you immediately see the xn-- form stored in certificates, resolver logs and registrar panels, while the reverse direction decodes a suspicious xn-- string into the human label it really represents. Since homograph attacks hide lookalike letters behind innocent names, checking both directions before you click a link is a cheap safety habit. The converter runs entirely in your browser, keeps no history, and handles scripts such as Devanagari, Cyrillic and accented Latin without any server round trip. Copy the result with one click for use in server configuration, email headers or domain registrations, and compare two spellings side by side to confirm they point at different hosts.