Wallpaper Randomizer is a small system tray wallpaper changer. It lets you: See a different wallpaper whenever you start Windows. Change wallpaper on regular intervals. Change wallpaper using a hotkey. When running it for the first time, you will be prompted to specify where is your photos or wallpapers directory. Wallpaper Randomizer is completely unobtrusive.
It requires no installation, has no user interface and does not write anything in the registry - All functions are controlled through the system tray menu. You can enable or disable Walllpaper Randomizer at any time. Supported image formats: BMP, PNG, JPG and GIF.