mndyg / qrcanvas

Generate characteristic qrcodes with a canvas.

QRCanvas

This is a QRCode generator written in pure javascript.

Based on Kazuhiko Arase's QRCode.

The only requirement is that the browser works with a canvas, which is supported by most modern browsers.

Installation

$ npm i qrcanvas

Quick Start

• Use in browser

  <div id="qrcode"></div>
  
  <script src="lib/qrcanvas.js"></script>
  
  <!-- You can use a slim version if no effects are wanted. -->
  <script src="lib/qrcanvas.slim.js"></script>

  var canvas = qrcanvas({
    data: 'hello, world'
  });
  document.getElementById('qrcode').appendChild(canvas);

• Use in Node.js

  node-canvas is required in Node.js.

  const fs = require('fs');
  const qrcanvas = require('qrcanvas');
  const canvas = qrcanvas({
    data: 'hello, world'
  });
  // canvas is an instance of `node-canvas`
  canvas.pngStream().pipe(fs.createWriteStream('qrcode.png'));

More

• Demo
• Docs

Snapshots