Guetzli means cookie in Swiss German, I wonder what inspired the devs to choose that name
Also popular Swiss pastry.
It was aiming for better compression than LZ4 at much higher speeds than deflate. Now brotli and zstd on their faster settings mostly beat it in that niche.
Basically you can add -li to almost any word in swiss german and there are lots of words already which end with -li. It's a way to make a word sound "cute".
As an example, "Auto" means car, but if we call it "Autöli" it means that it's either a toy car or just a little(,cute) car :)