GIFs are one of the oldest image formats used on the web. Throughout
their history, they have served a huge variety of purposes, from
functional to entertainment. Now, 25 years after the first GIF was
created, they are experiencing an explosion of interest and innovation
that is pushing them into the terrain of art. In this episode of Off
Book, we chart their history, explore the hotbed of GIF creativity on
Tumblr, and talk to two teams of GIF artists who are evolving the form
into powerful new visual experiences.