If you give it a picture of a train and say “moving on the tracks” it should make it appear the train is moving — but as it is a gif and only 2 seconds long, it won’t go very far.

Twitter is breaking down that limit, announcing today that you’ll now be able to combine GIFs, images, and videos in a single tweet. In a blog post published on Wednesday, ...

Redditors can include text in their comment alongside a GIF as well. For those who didn't use Powerups, the only way to include a GIF in a comment was to link to one on a third-party site.