I recently had an interesting request on a client project: how can we resize animated gifs without losing the animation in the thumbnails? WordPress lets you upload animated gifs, but as soon as it resizes them the thumbnails are decidedly less animated. As a purveyor of fine, animated gifs, I can tell you that an animated gif with no animation is no gif worth having!
Fortunately, there’s a free, open-source library called Gifsicle designed to manipulate animated gifs. The fun part is using Gifsicle to resize your gifs for you, automatically.