The fastest way to change your wallpaper

Open System Settings, click Wallpaper in the left sidebar, then select a new image from the gallery or upload your own. Click Set Desktop Picture and you're done. The whole process takes under a minute.

If System Settings doesn't open, click the Apple menu in the top-left corner of your screen, then select System Settings. On older Macs running macOS Monterey or earlier, the setting is called System Preferences instead, and Wallpaper appears under Desktop & Screen Saver.

Key Takeaways

  • Open System Settings, find Wallpaper in the sidebar, and choose from built-in images or your own photos.
  • You can set different wallpapers for your desktop and lock screen, or use the same image for both.
  • If you upload your own image, Mac automatically crops it to fit your screen size without distorting it.
  • Wallpaper changes take effect immediately and apply only to the user account you're logged into.
  • Custom wallpapers remain available even if you move or delete the original file from your computer.

Finding and selecting a built-in wallpaper

When you open Wallpaper in System Settings, you'll see categories on the left: Collections, Recent, and any folders you've created. Click Collections to browse by theme — Nature, Aerial, Solid Colors, and others depending on your macOS version. Each category shows thumbnail previews so you can scan options quickly without opening each one.

Click any image to preview it full-screen. If you like it, click Set Desktop Picture. If you want to see more options before deciding, click the arrow to move through images in that category one at a time. You can set different images for your desktop and lock screen by clicking the dropdown menu that says Desktop or Lock Screen at the top of the preview.

Uploading your own photo as wallpaper

Click the plus sign (+) button at the bottom of the Wallpaper window, then navigate to the folder where your photo is stored. Select the image and click Open. Mac will show you a preview with a blue frame around the area that will display on your screen.

You can drag the image around inside the frame to change which part shows, or use the slider to zoom in or out. Once you're satisfied with how it looks, click Set Desktop Picture. Mac stores your custom wallpaper in a folder it creates automatically, so the image stays available even if you move or delete the original file from your computer or external drive.

Setting different wallpapers for multiple monitors

If you have more than one display connected to your Mac, you can set a different wallpaper on each one. Open Wallpaper in System Settings, and you'll see a dropdown menu at the top showing which display you're currently editing. Select a display from the list, choose your wallpaper, and click Set Desktop Picture. Repeat for each monitor you want to customize.

If you want the same wallpaper to span across both displays as one continuous image, that option is not available in System Settings. Some third-party apps offer this feature, but the built-in tool treats each monitor independently. This means you'll see a break in the image where the two screens meet.

Using dynamic or changing wallpapers

Some built-in wallpapers change throughout the day — for example, the Monterey wallpaper shifts from light to dark as the sun sets. When you select one of these, System Settings labels it as Dynamic. The wallpaper will automatically adjust based on the time of day and your Mac's location settings.

If you prefer a static image instead, choose one from the Solid Colors category or upload your own photo. Dynamic wallpapers use a small amount of system resources, so switching to a static image may slightly improve battery life on laptops, though the difference is usually not noticeable in everyday use.

Troubleshooting wallpaper changes that don't stick

If you set a wallpaper and it reverts to the default after restart, check whether you're logged into the correct user account. Each account on your Mac has its own wallpaper setting. If you're sharing a computer, make sure you're changing the wallpaper for your own account, not someone else's.

If you uploaded a custom image and it's no longer available, the original file may have been moved or deleted. Mac keeps a copy in its wallpaper folder, but if that folder is corrupted, the image won't display. Re-upload the photo through System Settings to fix this. If System Settings itself won't open, restart your Mac and try again.

Frequently Asked Questions

Can I set a different wallpaper for my lock screen than my desktop?

Yes. In the Wallpaper window, use the dropdown at the top to switch between Desktop and Lock Screen, then select a different image for each. You can also choose the same image for both if you prefer.

What image formats does Mac accept for custom wallpapers?

Mac accepts JPEG, PNG, HEIF, and TIFF files. Most photos from your camera or phone will work. If you have an image in a different format, you can convert it using Preview or a free online tool before uploading.

Will my wallpaper change if I update macOS?

No. Custom wallpapers you've uploaded stay in place. Built-in wallpapers remain available, though new versions of macOS sometimes add additional options. Your personal settings don't reset during updates.

Can I schedule my wallpaper to change automatically?

The built-in Wallpaper tool doesn't have a scheduling feature. You can set it to change daily or weekly using third-party apps from the Mac App Store, but System Settings only lets you manually select one image at a time.