QR Code

Moodle Atto QR-Code is an Atto sub-plugin to easily create and integrate QR Code to Moodle Atto editor.
Moodle Atto-QR Code
Moodle Atto QR-Code is an Atto sub-plugin that can easily create and integrate QR Code to Moodle Atto editor.
This library helps you to generate QR codes in a jiffy. It also uses bacon/bacon-qr-code to generate the matrix and khanamiryan/qrcode-detector-decoder for validating generated QR codes.
After installing the plugin, the text editor looks like this
Features
Easy QR Code Integration
Flexible to Customize QR Code Size
QR Code Margin
Background and Foreground Color of QR Code
Global Setting Page to Avoid Overwhelming Input
Configuration
You can install this plugin from  Moodle plugins directory  or can download from  Github .
Global Setting page
Dashboard -> Site administration -> Plugins -> Text editors -> Atto HTML editor -> QR Code
Define your default QR-Code size, Margin, RGBA (Red, Green, Blue, Alpha) Background and Foreground color.
Toolbar Settings
Dashboard -> Site administration -> Plugins -> Text editors -> Atto HTML editor -> Atto toolbar settings
usages
After installing the plugin, you can use the plugin by following: