react-qrcode-logo

react-qrcode-logo

Typescript React component to generate a customizable QR Code.

Installation

npm install --save react-qrcode-logo

Usage

import * as React from 'react';
import { QRCode } from 'react-qrcode-logo';

React.render(
  <QRCode value="https://github.com/gcoro/react-qrcode-logo" />,
  mountNode
);

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
qrStyle	squares | dots	squares	Style of the QR Code modules
eyeRadius	number | number[] | number[][]		The corner radius for the positional patterns (the three "eyes" around the QR code). See more details below
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

About eyeRadius

Give the positional pattern custom radii. You can either set one radius for all corners or all positional eyes, or specify a radius for each corner of each eye.

Simple example:

<QRCode
	value="https://github.com/gcoro/react-qrcode-logo"
	eyeRadius={5} // 5 pixel radius for all corners of all positional eyes
/>

Other examples:

// Radius for each eye
eyeRadius={[
	5,  // top/left eye
	10, // top/right eye
	5,  // bottom/left eye
]}

// Radius for each corner (array is: top/left, top/right, bottom/right, bottom/left)
eyeRadius={[
	[10, 10, 0, 10], // top/left eye
	[10, 10, 10, 0], // top/right eye
	[10, 0, 10, 10], // bottom/left
]}

// Include radius for the inner eye of the top/left eye
eyeRadius={[
	{ // top/left eye
		outer: [10, 10, 0, 10],
		inner: [0, 10, 10, 10],
	},
	[10, 10, 10, 0], // top/right eye
	[10, 0, 10, 10], // bottom/left
]}

Usage example

You can find a very simple demo project here.

Contributing

Thanks to everyone who contributed :) PRs and suggestions are welcome.

gcoro

jgillick

JChord

halitogunc

mushang11

Trexy94

ty-everett

More credits

This package was inspired by cssivision/qrcode-react and zpao/qrcode.react. Also looked up some parts from kazuhikoarase/qrcode-generator (which this package depends on).