Sometimes you want more control over the low-res result than a re-scale will give.
Re:How We Got the Favicon (2017)
by kevin_thibedeau on Monday August 10, 2020 @06:02PM
(#24114542)
Use SVG with CSS media queries.
The only place where I've seen multiple sizes needed was for SPAs on mobile phones etc. and that's a whole different set of tags.