The format of dynamic pictures is GIF.

The specific steps to view the format of pictures on your computer are as follows:

1. First, click on the folder pattern below on your computer.

2. Then click on this page to select the folder where the pictures you want to view are located.

3. Then place the mouse cursor above the picture on the page of this folder, and then a box will pop up, in which you can see the format of the picture.