zbar-qr


> A lightweight JavaScript library for QR code scanning based on zbar, supporting both Node.js and browser environments. online-demo

Features

- 🚀 Lightweight and dependency-free
- 🛠️ Usable in Node.js and web environments

Installation

``bash
npm install zbar-qr


or


pnpm add zbar-qr
`

API

$3

- Parameters:
- imageData: An object parsed by pngjs (must include data, width, and height fields).
- Returns: An array of QRCode result objects, each containing:
- symbol: Barcode type (e.g., 'QR-Code')
- addon: Addon information (usually an empty string)
- data: Decoded string content
- loc: Array of location points, each with x and y coordinates

#### Example return value:

`json
[
{
"symbol": "QR-Code",
"addon": "",
"data": "test",
"loc": [
{ "x": 293, "y": 37 },
{ "x": 293, "y": 205 },
{ "x": 461, "y": 205 },
{ "x": 461, "y": 37 }
]
}
]
`

Usage Example

`js
import { PNG } from 'pngjs'
import ZbarProcess from 'zbar-qr'
import fs from 'fs'
import path from 'path'

const imgData = PNG.sync.read(
fs.readFileSync(
path.join(path.dirname(new URL(import.meta.url).pathname), 'test.png')
)
)
const result = ZbarProcess(imgData)
console.log(JSON.stringify(result, null, 4))
// [...]
``