vanillaqr

VanillaQR clientside javascript QR code generator

A small javascript file for creating qr codes on the fly using the HTML5 Canvas element. By default VanillaQR.js will output a canvas element as it's domElement. If the canvas element and 2d context is not supported, it will create a table instead. Tables will not be able to output images so be sure to check that the image element exists.

How to use

<script src="VanillaQR.min.js"></script>
<script>
 
//Create qr object
//Minus the url, these are the defaults
var qr = new VanillaQR({
 
    url: "https://github.com/chuckfairy/VanillQR.js",
    size: 280,
 
    colorLight: "#ffffff",
    colorDark: "#000000",
 
    //output to table or canvas
    toTable: false,
 
    //Ecc correction level 1-4
    ecclevel: 1,
 
    //Use a border or not
    noBorder: false,
 
    //Border size to output at
    borderSize: 4
 
});
 
//Canvas or table is stored in domElement property
document.body.appendChild(qr.domElement);
 
//Alternatively you can create an image from the canvas
//png, jpg, jpeg, webp, gif, bmp, tiff, x-icon, svg+xml, xxx
//Currently canvas dataURL mime types are not the same
var imageElement = qr.toImage("png");
 
if(imageElement) {
    document.body.appendChild(imageElement);
}
 
 
//You can recreate the qr code to a new url like so
//If you have appended the domElement it will change
qr.url = "https://github.com/chuckfairy";
qr.colorLight = "#0000000";
qr.colorDark = "#ffffff";
qr.init();
 
</script> 

Through module

import VanillaQR from "VanillaQR"
 
 
//See above for more
var qr = new VanillaQR({
    url: "https://github.com/chuckfairy/VanillQR.js",
});

Browser support

All browsers with canvas and canvas 2d context support

• Chrome > 30
• IE > 8
• Firefox > 33
• Opera > 25
• Safari > 7.0
• Android > 4.0

Table support fallback

• Chrome
• IE > 6
• Firefox
• Opera
• Safari
• Andriod

Vanilla QR is based on a port of a java qr code library that I can no longer find. When I do find it I'll be sure to give it proper credit. Thank you and have a nice day!

Live Demos

• Demo > http://chuckfairy.com/VanillaQR.js/example.html
• Creator > http://chuckfairy.com/VanillaQR.js/creator/

Special Thanks

• @alberto-salinas