How to launch? Rated 3 out of 5 stars
This may be a good extension... but how does one launch it? I gave up after half an hour, as I couldn't figure out how to launch it. There is no "option" to launch it from add-on menu, it does not seem to add any menu, button, or change the screen when I navigate to an image folder, nor do I see anything when I open an image. And yes, I did restart my Firefox. I strongly recommend that the author adds a how-to-launch info in the description.This review is for a previous version of the add-on (18.104.22.168-signed.1-signed).
There are a couple of ways to launch the add-on... there's a 'Slide Show Viewer' link on the Tools menu (short-cut: Alt-T), and also an icon that can be added to the Navigation Toolbar, or the Add-On Bar, under Customise.