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README.md

systemfontstack

Turning back the clock on webfonts since 2018

Webfonts were great when most computers only had a handful of good fonts pre-installed. Thanks to font creation and buying by Apple, Microsoft, Google, and other folks, most computers have good - no, great - fonts installed, and they're a great option if you want to not load a separate font.

Some of the disadvantages of webfonts are:

  • If you're including fonts from TypeKit or Google, you're hitting another domain. So, they might hurt your site's ability to work offline, will require extra domain connections, require extra entries in your Content-Security-Policy
  • Webfonts often have a narrow range of glyphs included, so they can make your site's experience in non-English languages sub-par
  • Webfonts also tend to have a scarcity of weights, and in a lot of cases you'll only tick off a few buttons for the weights you want to include, which means that your site will be missing styling - or even worse, synthesize faux-bold styles. Bad news!

Some of the disadvantages of system font stacks:

  • Specifying system fonts on some platforms is just weird. -apple-system and so on.
  • You can sometimes get another font of the same name that exists on someone's computer somewhere.
  • You can't demonstrate your world-class taste for pleasant typography selection.

This builds on the amazing, excellent blog post by Ire Aderinokun, as well as plenty of other sources. I'll heavily cite my sources because citations are important. Let's start off.

Notes

Inspired by bootstrap, I consider increasing the specific names in our mono font stack. https://github.com/twbs/bootstrap/issues/26228

But this is a bit confusing:

code, kbd, pre, samp {
  font-family: SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
}
  • Why specify Menlo,Monaco? As far as I can tell, the only computers that don’t have Menlo, but do have Monaco are those running macOS from 10 to 10.5, - so Leopard and Tiger. That can't be a sizeable chunk.

Cite

Why a website for system fonts

Three stacks

First of all, there are really three or more system font stacks:

  • Mono
  • Sans-serif
  • Serif

You could also say 'slab serif' needs a stack, but there's not much precedent for one, even though there are plenty of slab serif syste fonts.

Google -> copy + paste

This should be as short as possible. Good fast font stacks should be default. The website should make them obviously copy pasteable. Maybe not a copy button though.

What you see is what you will eventually get

It's useful to know what the font stack looks like at various levels of fall-through - does it look bizarre on Windows or Linux or Android? We should make that obvious.

Make pitfalls obvious

Don't start a shorthand font declaration with -apple-system, and other bummer lessons.

See also

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