qr-logo-js

A pure JS port of this project: https://github.com/gcoro/react-qrcode-logo

Usage

Include it in your html file:

<script src="qr-logo-js.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/qrcode-generator/1.4.4/qrcode.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>

This script using lodash and qrcode-generator, so you need to include them too.

Then you can use it like this:

<div id="qr-code"></div>

const options = {
  value: "https://example.com/",
  size: 200,
  bgColor: "#FFFFFF",
  fgColor: "#000000",
  eyeRadius: [
    [10, 10, 0, 10], // top/left eye
    [10, 10, 10, 0], // top/right eye
    [10, 0, 10, 10], // bottom/left
  ],
  eyeColor: "#EC681B",
  qrStyle: "dots",
};
const qrCode = new QRCodeGenerator(options);
document.getElementById("qr-code").appendChild(qrCode.canvas);

Props

Prop	Type	Default value	Description
value	string	https://reactjs.org/	The value encoded in the QR Code. When the QR Code is decoded, this value will be returned
ecLevel	L | M | Q | H	M	The error correction level of the QR Code
enableCORS	boolean	false	Enable crossorigin attribute
size	number (in pixels)	150	The size of the QR Code
quietZone	number (in pixels)	10	The size of the quiet zone around the QR Code. This will have the same color as QR Code bgColor
bgColor	string (css color)	#FFFFFF	Background color
fgColor	string (css color)	#000000	Foreground color
logoImage	string (src attribute)		The logo image. It can be a url/path or a base64 value
logoWidth	number (in pixels)	size * 0.2	Logo image width
logoHeight	number (in pixels)	logoWidth	Logo image height
logoOpacity	number (css opacity 0 <= x <= 1)	1	Logo opacity. This allows you to modify the transparency of your logo, so that it won't compromise the readability of the QR Code
logoOnLoad	() => void		Callback function to know when the logo in the QR Code is loaded
removeQrCodeBehindLogo	boolean	false	Removes points behind the logo. If no logoPadding is specified, the removed part will have the same size as the logo
logoPadding	number		Adds a border with no points around the logo. When > 0, the padding will be visible even if the prop removeQrCodeBehindLogo is not set to true
logoPaddingStyle	square | circle	square	Sets the shape of the padding area around the logo
qrStyle	squares | dots	squares	Style of the QR Code modules
eyeRadius	CornerRadii | CornerRadii[]		The corner radius for the positional patterns (the three "eyes" around the QR code). See more details here
eyeColor	EyeColor | EyeColor[]		The color for the positional patterns (the three "eyes" around the QR code). See more details here
id	string	react-qrcode-logo	Optional custom id for the QRCode canvas. You can use this prop if you have multiple QRCodes and need to differentiate them