Fit increases or decreases the height of the picture to fill the computer screen. Microsoft Windows has a list of default Windows backgrounds. Browse All News Articles.
 
 

– Here’s Where Windows 10 Stores Its Default Wallpapers

 
Select Start > Settings > Personalization > Background. In the list next to Personalize your background, select Picture, Solid color, or Slideshow. Choose from hundreds of free Windows 10 backgrounds. Download beautiful, curated free backgrounds on Unsplash.

Windows 10 background pictures. How to Delete Desktop Background Images in Windows 10 [MiniTool Tips]

 
 
GIF image as their background.