WallpaperChum it's a small Windows utility to download random images from a number of sources. It allows you to save the images, set them as desktop's wallpaper/lockscreen, and much more
What it does
The application downloads images from BING, Reddit, and DeviantArt. The image is stored in a folder of your choice, so it can be used as wallpaper or lockscreen. please read the disclaimer for each respective source
You can set a task in the Windows Scheduler to run the app and download the image daily, this can be either stored in a folder or in the Temp folder. The image can be renamed using a number of methods.
Features
Fully portable (no installation required) Windows command-line application
Set the downloaded image (or any selected image) as desktop wallpaper
Set the downloaded image (or any selected image) as lockscreen
Highly customizable
Image resolution and aspect ratio definition
Filter or Allow adult content as marked by Reddit / DeviantArt
Image scraping from Reddit channels
Image scraping from Bing daily wallpaper
Image scraping from DeviantArt Artist, Topic, and Tag pages
Renaming of image files with various methods
Image files can be saved and backup in user-selectable folders
You can choose to download images from different regions of BING as they all have different and wonderful images, just use the region/culture option. (For a list of valid regions/cultures please refer use this link)
Or you can download the images from the many subreddits that have photos, wallpapers, such as Images, EarthPorn, Paintings, Wallpapers, and many more.
Or you can download an image from any artist, tag, or topic on DeviantArt.
WallpaperChum does not need elevated privileges (i.e. Run As Administrator) to download and set the wallpaper or lockscreen. However, the user running the application needs to have permission to write on the destination folders, would this be an existing folder and not the Windows Temp.