[tribby]

> Does the average user really care about fonts? I would say definitely not. Most people don't even notice the font.

most people don't think consciously about the font, but that doesn't mean they don't notice or that their experience will be the same reading in one font vs another. some companies spend a lot of money on this. facebook and google, for example, do a/b testing on fonts to see which perform best in ads.

but users also care when a font becomes illegible on the wrong size display, and/or wrong pixel density. the less pixel dense a display is, for example, the bolder a font needs to be. this new tech makes it super easy for developers to actually execute these best practices, eliminates multiple steps from the asset pipeline, reduces network requests, and reduces file size. check out the google fonts analytics page[1] for an idea of how many trillions of fonts served that this will affect.

1. https://fonts.google.com/analytics