Where to find the desktop background setting

Your desktop background — the image that fills your screen behind all your open windows — lives in your operating system's display settings, not in a separate program. On Windows, you reach it through Settings. On Mac, you reach it through System Settings. Both let you pick from built-in images or upload your own photo.

The background is stored on your hard drive in a system folder. When you change it, you are telling your operating system which image file to display. The image itself stays on your drive; your system just points to it each time you start up or log in.

Key Takeaways

  • Windows users open Settings, go to Personalization, then Background, and choose from built-in images or browse to a photo on their computer.
  • Mac users open System Settings, click Desktop & Screen Saver, then Desktop, and select from Apple's library or drag in their own image.
  • You can use any image file on your computer — JPG, PNG, and other common formats all work on both systems.
  • Your background choice stays the same across restarts and logins unless you change it again.
  • If you want different backgrounds on multiple monitors, Windows lets you set them individually; Mac applies the same background to all displays.

Changing your background on Windows 11

Open Settings by pressing the Windows key and typing "Settings", then click the Settings app. On the left side, click Personalization. Then click Background.

You will see a dropdown menu that says "Personalize your background". Click it and choose Picture. Below that, Windows shows you thumbnail previews of built-in images. Click any one to set it as your background when ready — no confirmation needed. The change takes effect right away, even while Settings is still open.

If you want to use a photo from your computer instead, scroll down to "Recent" or click Browse to navigate to a folder. Find the image file, click it once to select it, then click Choose Picture. Windows accepts JPG, PNG, BMP, and GIF files.

If you have multiple monitors, Windows lets you set a different background on each one. In the same Background settings, look for "Choose a picture for each of your displays" and click it. You will then see thumbnails for each monitor and can pick a different image for each.

Changing your background on Mac

Click the Apple menu in the top-left corner and select System Settings. Click Desktop & Screen Saver in the sidebar. Then click the Desktop tab.

On the left, you will see categories: Apple, Colors, and any folders you have created. Click Apple to see built-in images that come with macOS. Click any image once to set it as your background. The change happens when ready.

To use your own photo, click the folder icon at the bottom of the window or drag an image directly into the preview area. Navigate to the photo you want, click it, and it becomes your background. Mac accepts JPG, PNG, HEIF, and other common image formats.

If you have multiple monitors connected to your Mac, the same background appears on all of them. Mac does not offer per-monitor background selection the way Windows does.

Using photos from your phone or cloud storage

On Windows, if you store photos in OneDrive, you can navigate to your OneDrive folder in File Explorer and pick an image from there. The image does not have to be downloaded to your computer first — Windows can use it directly from cloud storage.

On Mac, if you use iCloud Photos, you can open the Photos app, find the image you want, right-click it, and select Set Desktop Picture. This works without having to navigate through System Settings.

Both systems let you point to an image file anywhere on your drive or in a cloud folder. The background does not have to be in a specific location — Windows and Mac will remember the path and display it each time you log in, as long as the file stays in that location.

What happens if you move or delete the image file

If you set a background image and then move that file to a different folder or delete it, your system will no longer find it. Windows will show a blank or solid-color background. Mac will do the same.

To avoid this, keep background images in a folder you do not plan to move or delete — such as a Pictures folder or a dedicated Backgrounds folder. If you do move the file, you will need to set the background again by pointing to the new location.

Choosing the right image size and format

Your monitor has a native resolution — the number of pixels it displays horizontally and vertically. A background image works best when it matches that resolution or is larger. If your image is smaller than your screen, Windows and Mac will stretch it, which can make it look blurry.

For a standard 1920 × 1080 monitor, use an image that is at least 1920 × 1080 pixels. For a 4K monitor (3840 × 2160), use an image at least that size. If you are unsure of your monitor's resolution, right-click your desktop on Windows and select Display Settings, or on Mac go to System Settings and click Displays.

Both Windows and Mac automatically crop or fit images to fill your screen. If your image is wider or taller than your monitor's aspect ratio, the system will crop the edges. If it is smaller, the system will stretch it. Choosing an image close to your monitor's dimensions gives you the best result.

Frequently Asked Questions

Can I set a different background for each user account on my computer?

Yes. Each user account has its own background setting stored separately. When you log in as a different user, their background appears. Change the background in your own account, and it does not affect other users' desktops.

Will my background change if I update Windows or macOS?

No. Your background choice is saved in your user settings and survives updates. Even if you update to a new version of Windows or macOS, your background will still be there when you log back in.

Can I make my background change automatically on a schedule?

On Windows, yes. In Background settings, choose Slideshow instead of Picture, then select a folder of images. Windows will cycle through them at an interval you choose. On Mac, you can do this in Desktop & Screen Saver by selecting a folder and checking "Change picture" with a time interval.

What if the image I want to use is on an external drive?

You can set a background from an external drive, but the drive must be connected every time you start your computer. If the drive is unplugged, your system will not find the image. For a background you want to keep permanently, copy the image to your internal drive first.

Does changing my background use more power or slow down my computer?

No. Your background is a static image file that your system displays once at startup and when you lock or unlock your screen. It does not run in the background or consume CPU power the way an active program does.