Setting a Background on Windows 11 and Windows 10

Right-click anywhere on your desktop — the empty space where no windows are open — and select Personalize from the menu that appears. This opens the Settings app to the background section. You will see three options: Picture, Solid color, or Slideshow.

If you choose Picture, click the plus sign or Browse button to find an image file on your computer. Windows will show you a folder of sample images first, but you can navigate to any folder where you have saved photos. Select the image you want and it appears on your desktop when ready. You can also drag and drop an image directly onto the desktop if you have it open in a file browser.

For Solid color, click the dropdown menu and choose from preset colors, or select Custom color to pick any shade you want. For Slideshow, select a folder full of images and Windows will rotate through them at an interval you set — anywhere from 1 minute to 1 hour.

Setting a Background on Mac

Click the Apple menu in the top-left corner and select System Settings (or System Preferences on older macOS versions). Then click Wallpaper or Desktop & Screen Saver depending on your macOS version.

You will see a sidebar on the left with categories like Dynamic, Light, Dark, and Collections. Click any category to see available images. Click the image you want and it becomes your background when ready. If you want to use your own photo, click Add (the plus sign) at the bottom of the sidebar, navigate to your image file, and select it.

On Mac, you can also set different backgrounds for each desktop space if you use multiple desktops. The setting applies only to the space you are currently in.

Key Takeaways

  • On Windows, right-click the desktop, select Personalize, choose Picture or Solid color, and browse to your image file.
  • On Mac, open System Settings, click Wallpaper, and select from built-in images or click Add to use your own photo.
  • Both operating systems show the change when ready — you do not need to restart your computer.
  • You can use any image file format that your computer recognizes, including JPG, PNG, and BMP files.
  • If your image is smaller than your screen resolution, Windows and Mac will stretch or tile it; a larger image works best.

Using Your Own Photos as a Background

The easiest way to use a personal photo is to save it to a folder you can find quickly. On Windows, the Pictures folder in your user account is a good choice. On Mac, use the Pictures folder in your home directory. Once the image is saved there, follow the steps above to browse to it.

If your photo is very large (several megabytes), your computer may take a moment to display it the first time. This is normal. If the image looks blurry or stretched, it may be smaller than your screen resolution. You can resize the image using any photo editor, or straightforward choose a different photo.

Changing Your Background on a Schedule

Windows Slideshow mode rotates through multiple images automatically. To set this up, go to Personalize, select Slideshow, click Browse, and choose a folder containing several images. Then set the interval — how often Windows switches to the next image. This works even when your computer is locked.

On Mac, you can set a similar rotation by going to Wallpaper settings, selecting a collection (like Dynamic or a folder of your photos), and checking the box for Change picture. Then choose how often you want it to change: every 30 seconds, every hour, or every day.

Troubleshooting a Background That Will Not Change

If you right-click the desktop and do not see Personalize on Windows, you may be using a work computer with restricted settings. Ask your IT department whether you are allowed to change the background. Some organizations lock this setting for security reasons.

If the image appears but looks wrong — stretched, tiled, or off-center — check the fit option in Personalize. Windows offers Fill (stretches the image), Fit (shows the whole image with empty space), Stretch (distorts to fill the screen), Tile (repeats the image), and Center (places it in the middle). Choose the one that looks best with your image.

On Mac, if the background does not change after you select it, try clicking the image again or restarting your computer. If you are using a custom image and it does not appear, make sure the file format is supported — JPG and PNG work on all Mac versions.

Background Images and Screen Savers Are Different

Your background (also called wallpaper) is what you see on your desktop when no windows are open. A screen saver is a separate feature that appears after your computer sits idle for a set time — usually to prevent image burn-in on older monitors, though modern screens do not need this protection.

On Windows, screen savers are set in the same Personalize menu but under a different section. On Mac, they are in System Settings under Lock Screen or Screen Saver depending on your version. You can have a background and a screen saver at the same time — they do not interfere with each other.

Frequently Asked Questions

Can I set different backgrounds for each monitor if I have two screens?

On Windows 11, yes. Right-click the desktop, select Personalize, and you will see options to set different images for each monitor. On Mac, each display has its own background setting in Wallpaper preferences. On older Windows versions, the background usually spans across both monitors as one image.

What image size works best for a background?

Use an image that matches your screen resolution or larger. Common resolutions are 1920×1080 (Full HD), 2560×1440 (2K), or 3840×2160 (4K). If your image is smaller, it will look blurry or pixelated when stretched. You can find your screen resolution in Display Settings on Windows or System Settings on Mac.

Will changing my background slow down my computer?

No. A single background image uses very little memory or processing power. A slideshow with many images uses slightly more resources, but the difference is not noticeable on modern computers. You can safely use any background without affecting performance.

Can I use a video as my background instead of a photo?

Windows does not support video backgrounds through the standard Personalize menu. Mac does not either. However, third-party software exists for both systems that can display video wallpapers, though these use more battery power and system resources than static images.

What happens to my background if I update Windows or macOS?

Your custom background will remain. System updates do not delete personal settings or files. If you used a built-in image, the update might remove it if that image is no longer included in the new version, but your computer will straightforward show a default background instead.