qr code npm code example

Example 1: read qr code from image nodejs

//Importing jimp module
var Jimp = require("jimp");
// Importing filesystem module
var fs = require('fs')
// Importing qrcode-reader module
var qrCode = require('qrcode-reader');

// Read the image and create a buffer 
// (Here image.png is our QR code)
var buffer = fs.readFileSync(__dirname + '/image.png');

// Parse the image using Jimp.read() method
Jimp.read(buffer, function(err, image) {
	if (err) {
		console.error(err);
	}
	// Creating an instance of qrcode-reader module
	let qrcode = new qrCode();
	qrcode.callback = function(err, value) {
		if (err) {
			console.error(err);
		}
		// Printing the decrypted value
		console.log(value.result);
	};
	// Decoding the QR code
	qrcode.decode(image.bitmap);
});

Example 2: qr code terminal npm

$ npm install qrcode-terminal