Just letting you know I couldn't get this app to work. Tried the latest build, tried the developer build, tried older versions 2.81 and 3.10. Latest Firefox build
Most of the time it does not show up in toolbar to use, and if I try to add the icon(no picture) to either the menu or toolbar it simply disappears until I restore defaults. It may show up in the customize menu(just text), but as soon as I try to drag it or select something with it it disappears. thus can't use it. Can't get into configuration menu where I can save to a file.