Zig ZON › zzon

A fast, spec-compliant ZON parser and serializer for JavaScript.

ZON is a compact, human-readable, and easy-to-parse data format from the Zig programming language that is similar to JSON in JavaScript.

The API is similar to the native JSON API.

Try it in the Playground

Installation

``bash
npm install zzon
`

Usage

#### Stringify

`ts id="stringify"
import { ZON } from 'zzon';

const zon = ZON.stringify({"a":1,"b":"abc","c":true});
console.log(zon); // .{.a=1,.b="abc",.c=true}
`

#### Parse

`ts id="parse"
import { ZON } from 'zzon';

const json = ZON.parse(.{.a=1,.b="abc",.c=true});
console.log(json); // {"a":1,"b":"abc","c":true}
``

Playground

!zzon playground demo

Benchmarks

Performance comparison between ZON and JSON (source: test/index.test.ts):

| Operation | JSON | ZON | Difference |
|-----------|------|-----|------------|
| Parse | 430.80 MB/s | 38.66 MB/s | 11.04x slower |
| Stringify | 454.94 MB/s | 87.43 MB/s | 5.15x slower |

Hardware: Apple M1 Pro
Platform: darwin 25.0.0 (arm64)

Last updated: 2025-10-24T03:55:48.380Z

Example Usage

- Browser
- Bun

License

MIT