Issues: 1) replaces to Arial!!! My eyes are bleeding. Should better have a user-configured default sans font; 2) replaces monospaced to Arial!!! My eyes are bleeding. Should better have a user-configured default monospace font; 3) replaces serif to Arial!!! My eyes are bleeding. Should better have a user-configured default serif font. 4) Probably breaks font metrics, so on-line editors misplace text caret. For me it's definitely broken. Otherwise extension is working good, it really makes all those mad designers to behaviour nice. But with 1-4 problems, this extension is useless.

Works perfectly as intended, really saved me after having some issues with antialiasing on specific Microsoft fonts.

Thanks Rudie, it works fine with Firefox 68.0.2

Amazing extension - thank you so much. Some web fonts render terribly on my monitor and this allows me to see everything clearly again.