Node.js 1D/2D barcode detection SDK built with Dynamsoft Barcode Reader.
MIT License
The Node.js barcode QR code SDK is implemented by wrapping Dynamsoft Barcode Reader C++ SDK. It helps developers to build Node.js barcode and QR code scanning applications for Windows, Linux, macOS, Raspberry Pi and Jetson Nano.
v9.6.40
Platform-specific C/C++ compiler
node-gyp
npm i node-gyp -g
npm i node-addon-api -g
Linear Barcodes (1D)
2D Barcodes
Patch Code
GS1 Composite Code
GS1 DataBar
Postal Codes
initLicense(license: string): void
createInstance(readerType: readerTypes): BarcodeReader
getVersion(): string
Asynchronous Methods
decodeFileAsync(filePath: string, format: formats, callback?: (err: Error | null, result?: BarcodeResult[]) => void, template?: string): void
decodeFileAsync(filePath: string, format: formats, template?: string): Promise<BarcodeResult[]>
decodeFileStreamAsync(stream: any, length: number, format: formats, callback?: (err: Error | null, result?: BarcodeResult[]) => void, template?: string): void
decodeFileStreamAsync(stream: any, length: number, format: formats, template?: string): Promise<BarcodeResult[]>
decodeBase64Async(base64String: string, format: formats, callback: (err: Error | null, result?: BarcodeResult[]) => void, template?: string): void
decodeBase64Async(base64String: string, format: formats, template?: string): Promise<BarcodeResult[]>
decodeYUYVAsync(data: any, width: number, height: number, format: formats, callback?: (err: Error | null, result?: BarcodeResult[]) => void, template?: string): void
decodeYUYVAsync(data: any, width: number, height: number, format: formats, template?: string): Promise<BarcodeResult[]>
decodeBufferAsync(buffer: any, width: number, height: number, stride: number, format: formats, callback?: (err: Error | null, result?: BarcodeResult[]) => void, template?: string): void
decodeBufferAsync(buffer: any, width: number, height: number, stride: number, format: formats, template?: string): Promise<BarcodeResult[]>
Synchronous Methods
decodeFile(filePath: string, format: formats, template?: string): BarcodeResult[]
decodeFileStream(stream: any, length: number, format: formats, template?: string): BarcodeResult[]
decodeBase64(base64String: string, format: formats, template?: string): BarcodeResult[]
decodeYUYV(data: any, width: number, height: number, format: formats, template?: string): BarcodeResult[]
decodeBuffer(buffer: any, width: number, height: number, stride: number, format: formats, template?: string): BarcodeResult[]
For example:
let params = {
"ImageParameter": {
"Name": "Custom_143301_827",
"BarcodeFormatIds": [
"BF_ALL"
],
"DeblurLevel": 9,
"ExpectedBarcodesCount": 100,
"ScaleDownThreshold": 1200000,
"Timeout": 100000
},
"Version": "3.0"
};
template = JSON.stringify(params);
Replace LICENSE-KEY
with your own license key.
const dbr = require('barcode4nodejs');
dbr.initLicense("LICENSE-KEY")
dbr.decodeFileAsync("YOUR IMAGE FILE", dbr.formats.OneD | dbr.formats.PDF417 | dbr.formats.QRCode | dbr.formats.DataMatrix | dbr.formats.Aztec, function(err, msg){
console.log(msg);
for (index in msg) {
result = msg[index];
console.log('Format: ' + result['format']);
console.log('Value : ' + result['value']);
console.log('x1: ' + result['x1']);
console.log('y1 : ' + result['y1']);
console.log('x2: ' + result['x2']);
console.log('y2 : ' + result['y2']);
console.log('x3: ' + result['x3']);
console.log('y3: ' + result['y3']);
console.log('x4: ' + result['x4']);
console.log('y4: ' + result['y4']);
console.log('page: ' + result['page']);
console.log('decoding time: ' + result['time']);
}
}, "");
// Or
(async function () {
try {
var result = await dbr.decodeFileAsync("YOUR IMAGE FILE", dbr.formats.OneD | dbr.formats.PDF417 | dbr.formats.QRCode | dbr.formats.DataMatrix | dbr.formats.Aztec, "");
console.log(result);
} catch (error) {
console.log(error);
}
})();
Get the source code:
git clone https://github.com/yushulx/nodejs-barcode.git
Download Dynamsoft C++ Barcode SDK. Copy header files to src
folder and copy platform-specific shared libraries to platforms
folder.
Edit src/dbr.cc
and index.js
.
Build the Node.js extension:
node-gyp configure
node-gyp build
For Visual Studio 2019 Community
node-gyp configure --msbuild_path="C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe" --msvs_version=2017
node-gyp build
node test.js -f MultiPage.pdf
npm install
node server.js
Open http://localhost:2018/index.htm
in web browsers.
cd src
node-gyp rebuild --target=0.36.7 --arch=x64 --dist-url=https://atom.io/download/atom-shell
cd examples/desktop-electron
npm install
npm start
npm install v4l2camera
node camera_barcode_reader.js
npm install restify
node server.js
Open https://< ip >:2018
to scan barcodes in web browsers.