Wallpaper Timer - Version 2.1 Allows you to personalize your desktop. You pick the pictures. You pick the themes. You pick how often they should switch. Wallpaper Timer does the rest by making them work together. Make a theme with your favorite movies, TV shows and pictures of your family, friends or love of your life. Cycle through them while you work, play or just sit and watch. Supports all the most graphic formats (bmp, jpg, gif, tiff, tga and many more).