Generate QR codes. Based on Kazuhiko Arase's implementation.

$ component install matthewmueller/qr-code

var qr = require('qr-code');
var dataURI = qr('Hello!');
var img = new Image();
img.src = dataURI;
document.body.appendChild(img);

QR(text, options)

Create a QR code containing the given text. The result is a dataURI that you can place in an image or background. QR also takes some options including:

• type: QR code type. Changes the amount of information you can store in the QR code (ie. density). Defaults to 4.
• level: Backup level. See QR code error correction. Defaults to M
• size: Size of the QR code. Defaults to 4.
• margin: Whitespace around the outside of the image. Defaults to 0.

• size should be based on pixels not some arbitrary number.

MIT