Comment by damieng

If you do this, you make the page slower to load for people blocking external fonts.

Not doing it is also nicer for people with slow/unreliable network access, where they can block fonts, or even if they don't block them, can access your page more quickly and have a render without the custom font.

Couldn't this increase FOUC? At least before you could load in your style-sheet before the font, but if you embed the font inside you get no styling at all until it can fetch all of the data, correct