The fastest way to change your wallpaper

Open System Settings, click Wallpaper in the sidebar, then select a new image from Apple's built-in collection or upload your own. The change takes effect when ready across all your displays. The whole process takes about one minute.

If you want to use a photo you already have on your Mac — a family picture, a screenshot, anything stored in your Photos app or Downloads folder — you can drag it directly into the wallpaper selector without downloading anything new.

Key Takeaways

  • System Settings is where you control your wallpaper; it is not in Finder or any other app.
  • You can choose from Apple's free wallpapers or use any image file saved on your Mac.
  • If you have multiple displays, you can set different wallpapers on each one.
  • Wallpaper changes do not affect your files, apps, or how your Mac runs.

Opening System Settings and finding Wallpaper

Click the Apple menu in the top-left corner of your screen, then select System Settings. The System Settings window will open. On the left side, you will see a list of categories — scroll down until you find Wallpaper and click it.

If you do not see Wallpaper in the sidebar, your Mac may be running an older version of macOS. On older Macs, the setting is called Desktop & Screen Saver and lives in System Preferences instead of System Settings. The steps are the same once you find it.

Choosing from Apple's built-in wallpapers

Once you are in the Wallpaper section, you will see a grid of image collections — Dynamic, Light, Dark, Nature, Solid Colors, and others depending on your macOS version. Click any collection to see the wallpapers inside it. Click the image you want, and it becomes your wallpaper right away.

Dynamic wallpapers change throughout the day to match the time of day — the sky gets darker in the evening, for example. Light and Dark wallpapers stay the same but are designed to look good with your Mac's light or dark appearance setting. If you want something straightforward, Solid Colors offers plain backgrounds in white, black, gray, and other shades.

Using your own photos as wallpaper

To use a photo you already have, click the plus sign (+) at the bottom of the Wallpaper window. A file browser will open. Navigate to the folder where your image is stored — your Downloads folder, Pictures folder, or anywhere else on your Mac — and select the image. Click Open, and it becomes your wallpaper.

You can also drag an image directly from Finder into the wallpaper selector without using the file browser. Find the image in Finder, then drag it into the Wallpaper window. This works for any image file: photos from your Photos app, screenshots, images you downloaded from the web, or pictures from an external drive.

Setting different wallpapers on multiple displays

If your MacBook is connected to an external monitor, you can set a different wallpaper on each display. In the Wallpaper section, you will see a small thumbnail of each display at the top. Click the display you want to change, then select your wallpaper. Repeat for the other display.

When you disconnect the external monitor, your MacBook will remember which wallpaper you set for it and go back to that image the next time you plug in the same monitor. If you connect a different monitor, it will use the default wallpaper until you choose a new one.

Troubleshooting common wallpaper problems

If your wallpaper does not change after you select it, try closing System Settings completely and opening it again. Sometimes the change takes a few seconds to show up, especially if you are using a large image file.

If you cannot find the Wallpaper option in System Settings, check your macOS version. Press the Apple menu, select About This Mac, and look at the macOS version number. Wallpaper settings moved between System Preferences and System Settings in recent versions, so the location depends on which version you have. If you are running macOS Monterey or older, look for Desktop & Screen Saver in System Preferences instead.

If an image you want to use will not open in the wallpaper selector, it may be in a format your Mac does not support. JPG, PNG, and HEIF are the most common formats that work. If you have an image in a different format, you can open it in Preview, go to File, then Export, and save it as a JPG or PNG.

What happens to your old wallpaper

Your old wallpaper does not get deleted or stored anywhere — it is straightforward replaced. If you want to go back to a wallpaper you used before, you can select it again from the same collection. If it was a photo you uploaded, you will need to upload it again using the plus sign button.

Changing your wallpaper does not affect any of your files, folders, or apps. It is purely a visual change to your desktop background. Your Mac will run exactly the same way no matter which wallpaper you choose.

Frequently Asked Questions

Can I use a video as my wallpaper?

No, macOS wallpapers must be still images. Dynamic wallpapers are videos made by Apple, but you cannot upload your own video file. You can use a screenshot from a video or a still image instead.

What image size works best for wallpaper?

Any size works, but larger images look sharper. For a MacBook, an image that is at least 2560 by 1600 pixels will look clear. Smaller images will stretch and may look blurry. If you are unsure, use a photo from your Photos app — those are usually large enough.

Will changing my wallpaper slow down my Mac?

No. Wallpaper has almost no effect on how fast your Mac runs. Even dynamic wallpapers use very little power. You can change it as often as you want without any impact on performance.

Can I schedule my wallpaper to change automatically?

Yes. In the Wallpaper section, look for an option that says "Change picture" with a dropdown menu. You can set it to change every hour, every day, or when you wake your Mac. Select how often you want it to change, and macOS will rotate through the images in that collection automatically.

What if I want to go back to the default Apple wallpaper?

Open Wallpaper in System Settings, click the collection called Dynamic or Light (depending on your preference), and select the first image. That is the default wallpaper that came with your Mac. You can always come back to it.