Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Room for improvement Rated 5 out of 5 stars
Improvement: Middle-clicking the button should open the addon's options. Right-clicking should allow to swapping between the source that generates the QR Code / Data Matrix. You could even allow scrolling up or down on the button (if it's possible) to changed the size of the output; the current size indicated by some pixel font letters on the button.
Works as advertised.