Incredibly useful. Saves a lot of time especially when in need of code-diving and backtracking when you accidentally click something, or want to check a choice. Definitely leveled up my experience as reader. Hopefully there will also be a Google ver for this add-on soon.

Life saver. Does exactly what it says on the tin.

Seems bug free, allows me to save my progress easily, and adds a back button. Now I just need the back button for steam