Replaces Helvetica, Arial, Roboto with San Francisco, the System Font for OS X El Capitan. (Requirement: OS X 10.11 or later)
[NOTE] This extension does not run properly in some web pages. I'll try to fix it.
- (2018-03-17) Thalles Negrão: Works!
- (2017-08-20) A button that would allow me to say "Don't change to San Francisco on this website" would be great. (It, for instance, affects sites like The Verge and Medium that it probably shouldn't.) Other than that, great extension! Hoping something similar that's as good comes around for Safari.