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
- Windows
- Linux
- macOS
-
Linear Barcodes (1D)
- Code 39 (including Code 39 Extended)
- Code 93
- Code 128
- Codabar
- Interleaved 2 of 5
- EAN-8
- EAN-13
- UPC-A
- UPC-E
- Industrial 2 of 5
-
2D Barcodes
- QR Code (including Micro QR Code and Model 1)
- Data Matrix
- PDF417 (including Micro PDF417)
- Aztec Code
- MaxiCode (mode 2-5)
- DotCode
-
Patch Code
-
GS1 Composite Code
-
GS1 DataBar
- Omnidirectional,
- Truncated, Stacked, Stacked
- Omnidirectional, Limited,
- Expanded, Expanded Stacked
-
Postal Codes
- USPS Intelligent Mail
- Postnet
- Planet
- Australian Post
- UK Royal Mail
initLicense(license-key)
-
decodeFileAsync(fileName, barcodeTypes, callback, template)
orawait decodeFileAsync(fileName, barcodeTypes, template)
-
decodeFileStreamAsync(fileStream, fileSize, barcodeTypes, callback, template)
orawait decodeFileStreamAsync(fileStream, fileSize, barcodeTypes, template)
-
decodeBase64Async(base64, barcodeTypes, callback, template)
orawait decodeBase64Async(base64, barcodeTypes, template)
-
decodeYUYVAsync(buffer, width, height, barcodeTypes, callback, template)
orawait decodeYUYVAsync(buffer, width, height, barcodeTypes, template)
-
decodeBufferAsync(buffer, width, height, stride, barcodeTypes, callback, template, maxBufferLength)
orawait decodeBufferAsync(buffer, width, height, stride, barcodeTypes, template, maxBufferLength)
- Visit the barcode reader online demo.
- Customize parameters in advanced settings and then download the template.
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);
const dbr = require('barcode4nodejs');
dbr.initLicense("DLS2eyJoYW5kc2hha2VDb2RlIjoiMjAwMDAxLTE2NDk4Mjk3OTI2MzUiLCJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSIsInNlc3Npb25QYXNzd29yZCI6IndTcGR6Vm05WDJrcEQ5YUoifQ==")
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 toplatforms
folder. -
Edit
src/dbr.cc
andindex.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
-
examples/command-line
node test.js -f MultiPage.pdf
-
examples/web
npm install node server.js
Open
http://localhost:2018/index.htm
in web browsers. -
examples/desktop-electron
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
-
examples/linux-camera
npm install v4l2camera node camera_barcode_reader.js
-
examples/RESTful-service
npm install restify node server.js
Open
https://< ip >:2018
to scan barcodes in web browsers.