Punycode Converter

Punycode.js is a robust JavaScript library for converting Unicode strings to Punycode and vice-versa, strictly adhering to RFC 3492 (Punycode) and RFC 5891 (IDNA2008). It provides low-level functions for encoding and decoding individual string parts, as well as higher-level utilities for processing entire domain names and email addresses. The current stable version is 2.3.1. While previously bundled with Node.js up to v7, the userland module (`npm install punycode`) now specifically targets modern Node.js v6+ environments and browsers supporting ES2015+ features. Version 1.4.1 remains available for broader compatibility with older runtimes like Rhino, Ringo, and Narwhal, offering the same functionality with a UMD build. The project is actively maintained with periodic releases.