Rated 3 out of 5 stars

Wanted to use this to replace my combo of "Default FullZoom Level" plus "QuickPageZoom". The thing that made me switch back to those add-ons was that opening a page in a background tab with "Glazoom" would not zoom the page unless I reloaded the page after switching to the new tab. If that gets fixed, I'll switch back to the single add-on of "Glazoom".