I love this! It was just exactly what i needed, instructions were very clear and easy to read

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

ok

Хорошее расширение, но последнее обновление было давно, и оно не улучшается