The fastest way to change your Mac desktop background

Open System Settings, click Wallpaper in the left sidebar, then click the image you want. That's it—your desktop updates when ready. If you want to use your own photo instead of Apple's built-in options, click the plus sign at the bottom of the wallpaper panel, find the image file on your Mac, and click Set Desktop Picture.

The whole process takes under a minute. You can also right-click directly on your desktop, choose Change Desktop Background, and pick a new image the same way. Both routes lead to the same place.

Key Takeaways

  • System Settings > Wallpaper is the main control panel for desktop backgrounds on any recent Mac.
  • You can use Apple's built-in wallpapers or add your own photos by clicking the plus sign and selecting an image file.
  • Right-clicking on your desktop and choosing Change Desktop Background is a faster shortcut if you already know which image you want.
  • Your Mac can rotate through multiple wallpapers on a schedule if you select multiple images and turn on the rotation option.

Opening System Settings on your Mac

Click the Apple menu in the top-left corner of your screen, then select System Settings. On older Macs running macOS Monterey or earlier, this was called System Preferences instead—the process is the same.

Once System Settings opens, look for Wallpaper in the left sidebar. Click it. You'll see a grid of wallpaper options organized by category: macOS, Nature, Solid Colors, and others. If you've added your own images before, they'll appear in a Custom category at the top.

Choosing a built-in wallpaper

Click any category to see what's available. For example, Nature shows landscape photos, while Solid Colors shows single-color backgrounds. Click the image you want, and it becomes your desktop background right away.

If you want your Mac to switch between multiple wallpapers automatically, click the dropdown menu that says "Still Image" and choose "Desktop & Lock Screen" or "Desktop Only." Then select multiple images by holding Command and clicking each one. You can set how often the image changes—every time you wake your Mac, every hour, every day, or on a schedule you set.

Adding your own photos as a wallpaper

Click the plus sign at the bottom of the wallpaper panel. A file browser opens. Navigate to the folder where your photo is stored—usually Pictures, Downloads, or a folder you created. Click the image you want, then click Set Desktop Picture.

Your photo becomes the wallpaper when ready. If the image is smaller than your screen resolution, your Mac will stretch it to fit. If it's larger, your Mac will crop it to center the most important part. You can add as many of your own images as you want; they'll all appear in the Custom section.

Using the right-click shortcut

Right-click anywhere on your desktop (not on an icon or window). A menu appears. Click Change Desktop Background. This opens the same wallpaper panel as System Settings, but it's faster if you're already looking at your desktop.

This method works the same way: click a built-in wallpaper to use it, or click the plus sign to add your own photo. The right-click route is just a shortcut—you're not missing any options by using it instead of System Settings.

Setting different wallpapers for multiple monitors

If you have an external monitor connected to your Mac, you can set a different wallpaper on each one. Open System Settings > Wallpaper, then click the monitor icon in the top-right corner of the wallpaper preview. A dropdown menu shows each connected display. Select the monitor you want to change, then pick a new wallpaper.

Repeat for each monitor. Your Mac remembers which wallpaper goes with which display, so they'll stay matched even if you disconnect and reconnect the monitor later.

Troubleshooting wallpaper problems

If your wallpaper doesn't change after you click Set Desktop Picture, try restarting your Mac. Occasionally the display doesn't refresh when ready, especially if you have a lot of windows open.

If you're trying to use a photo and it won't let you select it, the file format might not be supported. Mac wallpapers work best as JPEG, PNG, or HEIF files. If you have a different format like BMP or TIFF, you can convert it using Preview (open the image in Preview, go to File > Export, and choose a supported format) or a free online converter.

Frequently Asked Questions

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

Yes. In System Settings > Wallpaper, select an image, then click the dropdown that says "Desktop & Lock Screen" and choose "Desktop Only" or "Lock Screen Only." This lets you use one wallpaper on your desktop and a different one on your lock screen.

Why does my wallpaper look blurry or stretched?

Your image is probably smaller than your screen resolution. For the sharpest result, use a photo that's at least as wide and tall as your monitor's native resolution. You can check your resolution in System Settings > Displays. If you don't have a large enough image, a solid color or Apple's built-in wallpapers will look better than a stretched photo.

How do I remove a wallpaper I added myself?

Open System Settings > Wallpaper, right-click the image in the Custom section, and click Delete. This removes it from your wallpaper list but doesn't delete the original file from your Mac. If you want to delete the file itself, open Finder, navigate to where it's stored, and move it to Trash.

Can I use a video or animated image as my wallpaper?

No. Mac wallpapers must be still images. You can use JPEG, PNG, HEIF, or TIFF files, but not video files or animated GIFs. If you want movement on your desktop, you'll need a third-party app from the Mac App Store.