I had to sign up just to write a review. This is the best reader tool available for Firefox. I strongly advise the first thing you do after installing this addon is to change Settings -> General -> Open behavior -> Reader. Now go and "read" an educational video. Thank me later... or better yet, thank them.

I can't live without it, but why is it always so behind from the github versions?

Awesome!! Much better than keeping 1000 tabs open