Re:Should you self-host Google Fonts?
by tunetheweb on Sunday February 23, 2020 @08:20AM
(#22396714)
They’ve been proposed!: https://drafts.csswg.org/mediaqueries-5/#prefers-reduced-dat...
You can already do this with JavaScript now: https://developer.mozilla.org/en-US/docs/Web/API/NetworkInfo... though as you can see from the bottom of that link, Browser support is limited at the moment (and experimental so may even be removed/changed!).
It's a shame there are no "bandwidth" queries in css, like there are @media queries - the client should be able to say - just content and essential downloads, please.