ImageOptim/gifski 1.9.0

You can resize GIFs too

on GitHub

gifski can now read other GIF animations as an input. It's a very bad idea to try to use it as an optimizer, since it will inherit a bad quality and can only make it worse. However, combined with the --width option it can be useful for generating thumbnails of GIF animations.

it now uses multiple threads for resizing and preprocessing when reading videos, so might be faster on multi-core machines, especially when using --fast