Another QR code library for nodejs, aiming at allowing more customization on your QR code result :

• changing background
• changing code color (still needs some work)

This library is based on the native Cairo and libqrencode library, so as requirements you should have this two libraries installed on your OS :

• Cairo library http://www.cairographics.org/download/
• libqrencode https://fukuchi.org/works/qrencode/

Use npm.

npm install qr-cairo

The code below shows a basic example of generating an image with gr-cairo with default settings : transparent background, black foreground and correction level to "low".

var qr_cairo = require('qr-cairo');

// Qr without options
qr_cairo.save('http://aminekabab.me/blog', 'test1.png');

Currently qr-cairo has one method that generates the qr image

qr_cairo.save(value, path [, options])

value is the message that you want to encode as Qr code

path the path where you want to save the generated image

option JSON object that can contain the following parameters

option.back_color the background color in hexadecimal format (default color is transparent)

option.fill_color foreground color (default : #000000)

option.ec_level error correction level ('L' : LOW, 'M' : MEDIUM, 'Q' : QUALITY, 'H', HIGH)

option.box_size the box size in pixel of the qrcode

var qr_cairo = require('qr-cairo');

// Qr with options 
var options = {'ec_level': 'l', 'box_size': '20', 'back_color': '#ee4444', 'fill_color': '#222200'};
qr_cairo.save("Amine", "test2.png", options);