: For animated Joker backgrounds, use Lively Wallpaper , a free open-source app available on the Microsoft Store. Quick Installation Guide

: Locate the file in your downloads folder, right-click it, and select "Set as desktop background."

: Ensure the resolution (e.g., 2560x1440) matches your monitor's native display settings for the sharpest image.

: Provides a wide variety of resolutions including 4K UHD and specific 2560x1440 options for widescreen setups.

You can download high-resolution Joker backgrounds from these reputable sites:

To find and set high-quality wallpapers, follow this guide to access the best 4K and Ultra HD sources. Top Sources for Joker Wallpapers