I want to like it, but every time I try to use it, the button positioning is below the edge of my screen. I really wish it just had simple buttons for 1) save the file to DISK 2) navigate etc. We're SO close, please. Or some kind of non-custom UI which is guaranteed to work despite other extension/other things I have installed. Thanks!

So simple to download and use! Thankyou Mozilla.

Good

Not very amused with this addon.
Doesn't stay as an App Tab, doesn'nt save reading position and i have to reload the epub every time staring Firefox (Systemstart)

It's a reader all right, but it just opens the book, without an option to download/save it.

That's a massive problem.

Good proggy, fast and small - ecxellent - Thanks