Totally forgot to mention the latest Kadomaru app by @louie and me! It’s an SVG optimiser called White Rabbit.
It can not only shrink images, but also has a text output mode so you can do things like inlining a bunch of SVGs in HTML (see https://parakeet.co/stock-icons for a real-world example).
Also available in German now!
Download at https://kadomaru.app/white-rabbit
