# Zunic: allocation-free Unicode library for Zig

**URL:** <https://ziggit.dev/t/zunic-allocation-free-unicode-library-for-zig/17590>\
**Category:** Showcase\
**Tags:** unicode, llm\
**Created:** [September 13, 2026, 1:48pm UTC](https://ziggit.dev/t/zunic-allocation-free-unicode-library-for-zig/17590 "2026-09-13T13:48:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![vrypan](https://ziggit.dev/user_avatar/ziggit.dev/vrypan/32/10150_2.png) [@vrypan](https://ziggit.dev/u/vrypan)\
**Post date:** [September 13, 2026, 1:48pm UTC](https://ziggit.dev/t/zunic-allocation-free-unicode-library-for-zig/17590/1 "2026-09-13T13:48:21Z")

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I’ve been working on **zunic** , a Unicode library for Zig:

> **[GitHub - vrypan/zunic: Allocation-free Unicode primitives for Zig](https://github.com/vrypan/zunic)**
>
> Allocation-free Unicode primitives for Zig

zunic provides a Unicode toolkit in a single dependency. I focused on things that require understanding and touching the actual Unicode spec and tried to implement them with performance as a top priority. I left out functionality that is easy to build as an add-on.

zunic offers:

- UTF-8 validation, decoding, encoding, and iteration
- Extended grapheme cluster segmentation
- Unicode line breaking
- Unicode normalization (NFC, NFD, NFKC, NFKD)
- Character/display width
- Unicode property lookup
- Text wrapping and other higher-level utilities that have to touch the spec.

Feedback on the API, performance, implementation, and missing functionality is very welcome.

I know that for many devs this is a sensitive topic, so keep in mind zunic is largely built using AI. If this makes a difference to you regardless of shape, features and performance, you may want to read this post: [I built a Zig Unicode library with AI. · blog.vrypan.net](https://blog.vrypan.net/2026/09/13/260913-i-built-a-zig-unicode-library-with-ai/)