bookitbee / barcode-detector-polyfill

Polyfill of the Barcode Detection API

barcode-detector-polyfill

Polyfill for the Barcode Detection API based on Dynamsoft Barcode Reader or ZXing.

Online demo

Include the library

1. Via CDN:

   <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/dbr.js"></script>
   <script src="https://cdn.jsdelivr.net/npm/barcode-detection@latest/dist/barcode-detector.umd.js"></script>

   PS: ZXing is not supported via CDN.

2. Via npm:

   npm install barcode-detection
   

   Then import the package:

   import {default as BarcodeDetectorPolyfill} from "barcode-detection"    
   

Usage

let barcodeDetector;

async function init() {
  if ("BarcodeDetector" in window) {
    alert('Barcode Detector supported!');
  }else{
    alert('Barcode Detector is not supported by this browser, using the Dynamsoft Barcode Reader polyfill.');
    BarcodeDetectorPolyfill.engine = "DBR"; // options: DBR and ZXing.
    //initialize the Dynamsoft Barcode Reader with a license
    BarcodeDetectorPolyfill.setDBRLicense("DLS2eyJoYW5kc2hha2VDb2RlIjoiMjAwMDAxLTE2NDk4Mjk3OTI2MzUiLCJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSIsInNlc3Npb25QYXNzd29yZCI6IndTcGR6Vm05WDJrcEQ5YUoifQ==");
    await BarcodeDetectorPolyfill.initDBR();
    window.BarcodeDetector = BarcodeDetectorPolyfill;
    
  }
  barcodeDetector = new window.BarcodeDetector({ formats: ["qr_code"] });
}

async function decode(imgEl) {
  //decode an image element
  let barcodes = await barcodeDetector.detect(imgEl);
}

You can apply for a license of Dynamsoft Barcode Reader here.

Supported Barcode Symbologies

Dynamsoft Barcode Reader:

• Code 11
• Code 39
• Code 93
• Code 128
• Codabar
• EAN-8
• EAN-13
• UPC-A
• UPC-E
• Interleaved 2 of 5 (ITF)
• Industrial 2 of 5 (Code 2 of 5 Industry, Standard 2 of 5, Code 2 of 5)
• ITF-14
• QRCode
• DataMatrix
• PDF417
• GS1 DataBar
• Maxicode
• Micro PDF417
• Micro QR
• PatchCode
• GS1 Composite
• Postal Code
• Dot Code
• Pharmacode

ZXing:

• Aztec
• Code 39
• Code 128
• EAN-8
• EAN-13
• UPC-A
• UPC-E
• QRCode
• DataMatrix
• PDF417
• Interleaved 2 of 5 (ITF)