You can't use a gif as a display picture - it won't move.
You need a picture with a .gif format. And it has to be animated.
Save a gif to your computer and upload it as your profile picture on Twitter.
Work it first on photoshop save it as .gif and then go to your settings and customize your them.
You can't it will just appear as a normal picture.
The new recently enforced policy of Twitter to no longer allow animated GIFs affect mostly people who have tried to add a GIF to their profile after the policy was instated. For individuals that already had an animated GIF they will be allowed to keep it, but if it is ever changed, the individual then can no longer use an animated GIF.
Go to your settings, click on "profile" and then "delete this image".
An animated GIF is an image encoded in a graphics interchange format (GIF), which consists of a number of pictures or frames in a single file and its graphic control extension that describes the same. GIFs are also used on Twitter and other social media sites. Sometimes users want to save these animated GIFs directly from the Twitter’s page to their device, be it Windows PC, Android or iPhone.
I think they are called GIF`S, at least it says in wiki that gif`s can be moving animations.
Only if you were a 2006-2007 member. Starting from 2008 YouTube did no longer allow Animated Gifs for profile pictures.
You can create a "gif" through a computer program or on various online websites and then upload it in the same way you would upload a normal picture.
Mostly, but it depends how much information is put on and privacy settings.
Graphics in HTML are the pictures that you see on a website. Pictures that move are called GIF's.