A backup GIF is a type of backup ad that uses the Graphics Interchange Format (GIF) to display a simple animation or series of images. GIFs are often used in digital advertising because they are small in file size, widely supported, and can be easily created and animated. A backup GIF can be used in the same way as any other backup ad, as a secondary or alternative ad that is shown in the event that the primary ad is not available or cannot be shown. GIFs are commonly used in banner ads, social media posts, and email marketing campaigns.