Works great and has all the features you would need in one app, decoding on-screen QR codes and saved QR codes, generating and saving QR codes, instantly generating codes linking to the current site, reading QR codes from screen shots, etc. Fully customizable too with many settings. IMO the most useful of the QR code related apps.
The Quick QR Code is a full-featured QR Code Extension that offers QR code generation, camera decoding, picture decoding, web page screenshot decoding, and more
It supports dynamic IP replacement, history import and export, international language support, offline operation, short links, novice guidance, shortcut keys, and provides a quick and friendly experience
Additionally, it provides a new service on a dedicated domain for QR codes and analytics, offering custom URL, active dates, password protection, and QR code generation for a quick and intuitive experience