Animated GIFs have become so huge. They're everywhere. But why? On the surface, they're pretty silly—a few frames of video, endlessly looping in time. There are GIFs of Star Trek's Picard facepalming, ...

Off Book explores the web's most iconic image format: the animated gif. GIFs are one of the oldest image formats used on the web. Throughout their history, they have served a huge variety of purposes, ...