Integrate WhatsApp Web with Firefox in a simple way.
The button opens a panel that you can close just with "Esc" key or clicking elsewhere.
You can change the size of the panel.
You can move the panel.
It's a button that you can move everywhere.
Configurable shortcut key.
Can pin the panel: This is useful, for example, when you need to change to another window and you need keep the panel open.
Toolbar with the following buttons: Reload, Show/Hide toolbar, Pin/Unpin Panel and Close Panel.
It delays the first load of the panel. This decreases the Firefox launch time.

Known issues:
  • Doesn't show the right-click menu
  • Doesn't work the voice note
  • Can't take a photo with the webcam from the panel