How to Set a Default Zoom Level in Firefox Share February 15, 2020 Dm4r Technology If you browse with Mozilla Firefox, you can now set a default zoom level for all websites. And you can still set custom zoom levels for individual websites, too. This feature was added in Firefox 73, which was released Feb. 11, 2020. Read This Article on How-To Geek › Source : How to Set a Default Zoom Level in Firefox