Dynamic Wallpaper is a useful software to automatically change the wallpaper. It is possible to import photos from your hard disk and to create up to 10 slideshows. Each slideshow can contain as many photos as you like. Dynamic Wallpaper is fully configurable, which allows you to apply effects (centered, mosaic, stretched, titled, etc.) to your photos, to set the time interval between the slideshows and photo order. In brief, this software supports multiple image formats and is available for a free trial.