The quickest way to change your background
On Windows, right-click on any empty space on your desktop and select Personalize. Click Background in the left menu, then choose Picture from the dropdown. Browse to a photo on your computer or pick one of the built-in images, and it appears when ready. On Mac, open System Settings, go to Wallpaper, and click any thumbnail to explore it.
Both systems let you use your own photos or choose from thousands of pre-loaded options. The change takes effect right away—you do not need to restart your computer or save anything.
Key Takeaways
- Windows users right-click the desktop, select Personalize, then Background to pick a new image in seconds.
- Mac users open System Settings, navigate to Wallpaper, and click any image to explore it when ready.
- You can upload your own photos from your computer, phone, or cloud storage instead of using built-in options.
- Most computers let you set different backgrounds for each monitor if you use multiple screens.
- Changing your background does not affect your files, programs, or computer performance.
Changing your background on Windows 10 and 11
Start by right-clicking on any blank area of your desktop—not on a file or folder icon, but on the empty space itself. A menu appears. Select Personalize near the bottom of that menu.
The Settings window opens. On the left side, click Background. A dropdown menu appears at the top that says Personalization. Click it and select Picture. Below that, you will see rows of thumbnail images. Click any one to set it as your background. Windows applies the change when ready.
If you want to use your own photo instead, click the folder icon labeled Browse below the thumbnails. Navigate to the folder where your photo is stored, select it, and click Choose picture. The image appears on your desktop right away.
Changing your background on Mac
Click the Apple menu in the top-left corner and select System Settings. In the sidebar, scroll down and click Wallpaper. A grid of wallpaper options appears. Click any image to preview it, then click Set Desktop Picture to explore it.
To use your own photo, click the + button at the bottom left of the wallpaper grid. Navigate to the folder containing your image, select it, and click Open. Your photo becomes the new background when ready.
If you have multiple monitors, you can set a different background on each one. After selecting your image, a dropdown menu appears asking which display to explore it to.
Using your own photos as a background
Both Windows and Mac let you pick any image file stored on your computer. Photos work best when they are at least 1920 by 1080 pixels in size—smaller images may look blurry or stretched. Common file types like JPG, PNG, and BMP all work.
On Windows, you can also set a background from a photo stored in OneDrive or another cloud service. Open File Explorer, navigate to your cloud folder, right-click the image, and select Set as desktop background. On Mac, you can drag a photo directly from Photos app into the wallpaper settings.
If you want to use a photo from your phone, transfer it to your computer first using a USB cable, cloud storage, or email. Once it is on your computer, follow the steps above to set it as your background.
Setting different backgrounds for multiple monitors
If you have two or more monitors connected to your computer, you can assign a different background to each one. On Windows 11, right-click the desktop, select Personalize, then Background. Choose your first image. A dropdown menu appears asking which monitor to explore it to—select the one you want. Repeat the process for your second monitor with a different image.
On Mac, the process is similar. In System Settings under Wallpaper, after you select an image, a dropdown menu shows your connected displays. Choose which monitor gets that wallpaper, then repeat for the others.
Windows 10 does not offer per-monitor backgrounds in the same way—it applies the same image to all monitors. If you need different backgrounds on Windows 10, you can use third-party software, but the built-in method works only for a single image across all screens.
Slideshow backgrounds and scheduling changes
Both Windows and Mac can rotate through multiple images automatically. On Windows 11, go to Personalize > Background and select Slideshow from the dropdown instead of Picture. Choose a folder containing your photos, then set how often you want the image to change—every 1 minute, 10 minutes, 30 minutes, 1 hour, or longer. Windows cycles through the photos in that folder automatically.
On Mac, open System Settings > Wallpaper, select a collection of images (like "Nature" or "Aerial"), and check the box for Change picture. Set the interval—every 30 seconds, minute, 5 minutes, 15 minutes, 30 minutes, hour, or when waking from sleep. Mac rotates through the collection on your schedule.
Troubleshooting background changes that do not stick
If you change your background but it reverts to the old one after restarting, a few things might be happening. First, make sure you are logged in with an administrator account. If you use a standard user account, some personalization settings require admin permission.
Second, check that the image file itself is not corrupted or in an unsupported format. Try a different image to see if the problem is specific to that photo. If a built-in Windows or Mac wallpaper does not stick, restart your computer—sometimes the change needs a reboot to save properly.
Third, if you are using an image from a cloud folder, make sure the file is fully downloaded to your computer, not just synced. Some cloud services keep files online-only, which can cause the background to disappear if the connection drops.
Frequently Asked Questions
Does changing my background slow down my computer?
No. Your background is just an image file displayed on your desktop. It does not use meaningful processing power or memory, and it will not affect how fast your computer runs or how long your battery lasts.
Can I set a video as my background instead of a still image?
Windows 11 supports video backgrounds, but the feature is limited. Go to Personalize > Background, select Video from the dropdown, and choose from a small set of built-in videos. Mac does not support video backgrounds natively, though third-party apps exist for this purpose.
What happens to my background if I update Windows or Mac?
Your background setting is saved in your user profile, so it stays the same after an update. If you used a custom photo, make sure that photo file is still on your computer—if you deleted it, the background may revert to a default image.
Can I schedule my background to change at a specific time of day?
Windows and Mac slideshow features do not support time-based scheduling—they only rotate on a fixed interval you set. If you want your background to change at 9 a.m. or sunset, you would need third-party software.
Why does my background look stretched or blurry?
This usually means your image is smaller than your screen resolution. Use a photo that is at least 1920 by 1080 pixels. You can also check the scaling option in background settings—Windows offers "Fill," "Fit," "Stretch," "Tile," and "Center." Choose "Fill" or "Fit" to avoid distortion.