easy to use and intuitive, very helpful for polishing my Chinese reading skills

best extension for pinyin

Excellent, works on both mobile and desktop. I wish zhuyin (bopomofo) would also be supported though!

very helpful.

Out of all the pinyin addons, this is the only one I got working with Firefox Beta on Android. It's pretty good at spotting grouped up characters/words (like for chenyu) too. Not perfect, but nothing can be for something like this.