I like it a lot! It just works very well.

Glad to see this move to a webextension and have a future beyond Firefox 57.

The app works flawlessly. The only thing I wish it had it's a better user interface. This would hands down dethrone Readium if it gets the work needed on the interface, and maybe integration with dictionary and translator. I'll be the first to donate if you could make that happen.

If you are upset with the new version you can download the older version here: https://addons.mozilla.org/en-US/firefox/addon/epubreader/versions/

I downloaded version 1.5, and it is working great just like it used to!

Okay, like everyone else here I was pretty frustrated when this didn't work with the new update. But after a frenzy of clicking I was able to get it working.

Here's the trick:
1) To open an ebook you have to first look for the open book in your browser toolbar.
2) Click it JUST ONCE.
3) Now click the page - NOT in the middle of the image, but in the middle of the page. Click just once, if you do it twice the toolbars, which are located on the top and bottom of the page, will go away.
4) Click the button that stands for the table of contents. It looks like a tablet, or a page with writing on it.
5) Now click the first chapter.
6) Enjoy!

If you're like me and would rather read it on your Kindle- you still can. Just click the floppy disc image, download, and use your favorite converter (I like online-convert.com).

Good luck!

As I need to google search a lot(c++ dev) I need firefox always open. Having a lightweight but fully feature epub reader on a "tab" is just awesome.

Thanks!