RandomWallpaper

RandomWallpaper is a small software application whose purpose is to help you set a random wallpaper at Windows startup. It can be deployed on all Windows flavors out there.

Keep it stored on pen drives

You can take advantage of the tool’s portability status and drop it on USB flash drives or other similar devices. Plus, you can open it without administrative privileges. Double-clicking on the executable file is sufficient for getting access to the program’s interface.
Since it does not leave entries in your Windows registry and create additional configuration files, you can get rid of it via a quick deletion task.

Manage your wallpapers automatically

RandomWallpaper gives you the freedom to create a list with images that are set as your wallpaper. The utility works only with BMP file format. Files can be imported in the working environment using only the built-in browse button (the drag-and-drop support is not implemented).
What’s more, you are allowed to set the position of the photos on the screen (tiled, centered, or stretched), remove pictures from the list or clear the workspace with a single click, as well as perform some tests to check out how the selected wallpaper looks like.
Images are set in a random order, and you can configure priorities for each file. Other important configuration settings worth being mentioned enable you to show wallpapers with low and high priority at a certain frequency, as well as automatically change the wallpaper at a custom number of minutes.
Tests have pointed out that RandomWallpaper carries out a task quickly and without errors. It is not a resource hog so you do not have to worry that it burdens the overall performance of the computer.

Final observations

To sum things up, RandomWallpaper gives you the possibility to automatically change wallpapers based on priorities, and can be configured by rookies and professionals alike.