I always used to change my wallpaper of my laptop. But most of the time I don’t get exact screen resolution wallpaper. I got the solution in google search.
Google search has one great option which helps to search exact screen resolution wallpapers or images.
Select Images and search for particular keyword in google. Now select any of the option from left frame such as Large, Medium or Icon etc.
For exact screen size click on Exactly…option and set the Width and Height. For example my screen resolution is 1280×800 so I entered that and searched. Search result displays all the images with screen resolution 1280×800.[contact-form-7 404 "Not Found"]