Generating a QR Code in Node.js

Generating a QR code in Node.js is simple and fast thanks to libraries like qrcode. In this guide, I’ll show you how to do it in just a few steps.

1. Initialize a New Node.js Project

Open the terminal, create a new folder, and initialize a project:

mkdir qr-code-generator
cd qr-code-generator
npm init -y

2. Install the `qrcode` Library

Install the qrcode library via npm:

npm install qrcode

3. Create the Script to Generate the QR Code

Now create a file called generate.js with the following content:

const QRCode = require('qrcode');

const textToEncode = 'https://example.com';

QRCode.toFile('qrcode.png', textToEncode, {
  color: {
    dark: '#000',  // Code color
    light: '#FFF'  // Background
  }
}, function (err) {
  if (err) throw err;
  console.log('QR code successfully generated in qrcode.png');
});

4. Run the Script

Run the script in the terminal:

node generate.js

After execution, you’ll find the qrcode.png file in the same folder. This file contains the QR code pointing to https://example.com.

Conclusion