Working rather well with Firefox Quantum. I wanted to be able to set a default zoom for all sites and this did it. I was actually going to drop Firefox Quantum and go back to Chrome, I was so fed up with how zoom was working until I found your add-on, I will leave a donation later. Sadly it will be small, it's all I can afford. Thanks for this add-on!!! Most of the add-ons for zooming simply do not work well with Quantum, but your does!!!!!