QR Code for Firefox is an extension designed for users of the Firefox browser. It enables users to generate QR codes quickly and independently. QR Code for Firefox allows users to customize the colors of their QR codes with up to 256 color options. The latest version of this addon has been updated to 1.1.2.1. Please upgrade and use it as soon as possible. Available for all platform (Android, iOS, WINDOWS, Linux). Some useful notes: It is recommended to choose dark colors as the foreground and light colors as the background, as this will make it easier for scanning and recognition.