The fastest way to change your Mac 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 lives under the Desktop & Screen Saver section.

Key Takeaways

  • System Settings (or System Preferences on older Macs) is the only place you need to go to change your wallpaper.
  • You can choose from Apple's built-in image library or upload a photo from your computer, external drive, or cloud storage.
  • Changes take effect immediately and apply to your desktop, not your login screen, unless you specifically set them there.
  • If you want different wallpapers on multiple monitors, you set each one separately through the same System Settings menu.

Finding and selecting a built-in wallpaper

Apple includes dozens of wallpapers with every Mac. Open System Settings, click Wallpaper in the left sidebar, then look at the categories on the right: Collections, Recent, and any custom folders you've created. Click any category to see thumbnails of available images.

Hover your mouse over an image to see a preview at full size. When you find one you want, click it once to select it, then click the Set Desktop Picture button that appears. Your desktop updates immediately.

The Collections category includes Aerial (moving video backgrounds), Nature, Solid Colors, and others depending on your macOS version. Solid Colors are useful if you want a plain background without distraction.

Using your own photos as wallpaper

Click the plus sign (+) at the bottom of the Wallpaper window to add a folder of images. Navigate to the folder containing your photos — this can be your Pictures folder, a folder on an external drive, or a synced cloud folder like iCloud Drive or Dropbox. Select the folder and click Open.

Your photos now appear in the Wallpaper list. Click any image to preview it, then click Set Desktop Picture. If you add a folder with many images, you can also check the "Change picture" option and set how often macOS rotates through them — every 30 seconds, hourly, daily, or when you wake your Mac.

You can also drag a single image file directly into the Wallpaper window. This works with JPG, PNG, HEIF, and most other common image formats.

Setting different wallpapers for your login screen

The wallpaper you set in System Settings appears on your desktop after you log in. To change what appears on the login screen itself, open System Settings, click Lock Screen in the left sidebar, then click the image preview at the top. Follow the same steps as the desktop wallpaper process.

Your login screen and desktop can have different images. Many people keep the login screen simple and use a personal photo on the desktop.

Managing wallpaper on multiple monitors

If you have more than one monitor connected to your Mac, open System Settings and click Wallpaper. You'll see thumbnails for each monitor at the top of the window. Click the monitor you want to change, then select a new image. Repeat for each monitor.

Each monitor's wallpaper is set independently, so you can have a work photo on one screen and a personal photo on another.

Troubleshooting wallpaper changes that don't stick

If you set a wallpaper and it reverts to the previous one after restart, the image file may have moved or been deleted. If you used a photo from an external drive, make sure that drive is connected. If you used a cloud folder, check that it has finished syncing.

If the image is from a folder you added to Wallpaper, and you later moved or renamed that folder, System Settings can no longer find it. Remove the folder from Wallpaper (click the minus sign at the bottom) and add it again from its new location.

On very old Macs, wallpaper changes sometimes don't appear until you restart. Restart your Mac and check System Settings again to confirm the change took effect.

Frequently Asked Questions

Can I use a live photo or video as my wallpaper?

Yes, if you're running macOS Big Sur or later. Aerial wallpapers are Apple's built-in video backgrounds. For your own videos, add a folder containing video files to Wallpaper the same way you would photos. Not all video formats work; MP4 is most reliable.

What happens if I delete a photo I used as wallpaper?

If you delete the original image file, your Mac will revert to the previous wallpaper the next time you restart. Keep photos you want as wallpaper in a permanent folder, or copy them to your Pictures folder before setting them.

Can I set a different wallpaper for each user account on my Mac?

Yes. Each user account has its own wallpaper setting. When you log in as a different user, their wallpaper appears. Change wallpaper through System Settings while logged into each account separately.

Why does my wallpaper look blurry or pixelated?

Your image resolution may be lower than your screen resolution. For best results, use an image at least as wide and tall as your monitor's native resolution. A 4K monitor needs a larger image than a standard HD monitor.