libidn2 ☆

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Description:
International domain name library (IDNA2008, Punycode and TR46)

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Networking

Tags: idn domain-names internationalization networking library

Install: brew install libidn2

About:
Libidn2 is the official reference implementation of IDNA2008 and Punycode conversion, enabling applications to handle internationalized domain names. It provides robust support for TR46 compatibility mappings, ensuring seamless integration with modern web standards and legacy systems. This library is essential for developers building networked applications that require reliable domain name processing across different languages and scripts.

Key Features:

IDNA2008 and Punycode support
TR46 compatibility mappings
Lightweight C library
Cross-platform compatibility

Use Cases:

Validating internationalized domain names in web applications
Processing domain names in DNS clients and servers
Converting between Unicode and ASCII-compatible encoding

Alternatives:

libidn – Legacy version with IDNA2003 support; Libidn2 is the modern replacement

Version History

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