Plasma lets you generate a QR Code by copying something to the clipboard and clicking on the QR Code button. It is able to display the QR Code, and the QR Code

Plasma lets you generate a QR Code by copying something to the clipboard and clicking on the QR Code button. It is able to display the QR Code, and the QR Code happens to be draggable. It seems we are very close to add a Save button there, which would be incredibly convenient :-) That might be for a future contribution.