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 to apply it. The whole process takes under a minute.

If System Settings does not show a Wallpaper option, you are running an older version of macOS. On Monterey and earlier, go to System Preferences instead, then click Desktop & Screen Saver, and follow the same steps.

Key Takeaways

  • System Settings > Wallpaper is the main route on macOS Ventura and newer; older versions use System Preferences > Desktop & Screen Saver.
  • You can choose from Apple's built-in gallery, upload a photo from your computer, or drag an image directly onto the desktop.
  • Wallpaper changes apply only to the desktop you are currently on if you use multiple spaces.
  • If your wallpaper reverts after restart, check whether a third-party app or your work device management system is overriding it.

Finding and selecting a wallpaper from Apple's gallery

Open System Settings by clicking the Apple menu in the top left, then System Settings. In the sidebar, click Wallpaper. A panel opens showing categories: Dynamic, Light, Dark, Collections, and Solid Colors.

Click any category to see thumbnails. Hover over an image to preview it on your desktop in real time. Once you find one you want, click it, then click Set Desktop in the bottom right. The change takes effect immediately.

Dynamic wallpapers shift throughout the day. Light and Dark options adjust to your system appearance setting. Collections include themed sets like nature, cities, and abstract designs. Solid Colors gives you a single flat color if you prefer a minimal look.

Using your own photos as wallpaper

In the Wallpaper panel, click the plus sign (+) at the bottom left. A file browser opens. Navigate to the folder holding your photo, select it, and click Open. The image appears in your wallpaper list and is set as your desktop immediately.

You can also drag a photo directly from Finder onto the desktop. A menu appears asking whether you want to set it as wallpaper or screen saver. Click Set Desktop Picture. This method skips the System Settings window entirely.

Supported formats include JPEG, PNG, HEIF, and TIFF. Very large files may slow down your Mac slightly, so consider resizing images larger than 10 MB before setting them.

Setting different wallpapers for each space or monitor

If you use multiple spaces (virtual desktops), you can set a different wallpaper for each one. Change to the space you want, open System Settings > Wallpaper, and select a new image. That wallpaper applies only to the current space.

If you have multiple monitors connected, the same wallpaper appears on all of them by default. macOS does not offer a built-in way to set different wallpapers per monitor, but third-party apps like Wallpaper Engine or Multi can do this if you need that feature.

What to do if your wallpaper keeps changing back

If your wallpaper reverts to a default image after you restart your Mac, a few things might be happening. First, check whether you have a third-party app running that changes wallpapers automatically. Look in System Settings > General > Login Items to see what launches at startup.

If your Mac is managed by your workplace or school, device management software may be enforcing a specific wallpaper. Contact your IT department to ask whether they can allow you to change it, or whether you need permission to do so.

On older Macs, a corrupted cache can also cause wallpaper settings to reset. Restart your Mac in Safe Mode by holding Shift while it boots, then change your wallpaper again. This sometimes clears the issue.

Changing your lock screen background separately

Your lock screen (the image you see before you log in) can be different from your desktop wallpaper. In System Settings, click Lock Screen in the sidebar. Select an image the same way you would for the desktop, then click Set Lock Screen.

You can use the same image for both, or pick two different ones. Changes to the lock screen take effect immediately and do not affect your desktop wallpaper.

Troubleshooting wallpaper problems

If an image will not set as wallpaper, make sure the file format is supported (JPEG, PNG, HEIF, or TIFF). If the file is corrupted, try a different image first to confirm the problem is with that specific file, not your Mac.

If System Settings crashes when you open Wallpaper, restart your Mac and try again. If the problem persists, restart in Safe Mode, then attempt to change your wallpaper. If it works in Safe Mode, a third-party app or login item is likely interfering.

On very old Macs running El Capitan or earlier, some newer image formats may not work. Stick to JPEG or PNG if you are on an older system.

Frequently Asked Questions

Can I set a video or animated GIF as my wallpaper?

macOS does not support video or GIF files as desktop wallpaper natively. Dynamic wallpapers (the built-in ones that change throughout the day) are the closest option. Third-party apps like Wallpaper Engine can play video wallpapers, but they use more battery and processing power.

Will changing my wallpaper affect my screen saver?

No. Wallpaper and screen saver are separate settings. You can change one without affecting the other. Screen saver settings are in System Settings > Lock Screen > Screen Saver on newer Macs, or System Preferences > Desktop & Screen Saver on older ones.

What size image works best for wallpaper?

Match your Mac's screen resolution for the sharpest result. Most modern MacBooks are 2560 × 1600 or 2880 × 1800 pixels. If your image is smaller, macOS will stretch it and it may look blurry. If it is larger, macOS will shrink it automatically.

Can I schedule my wallpaper to change at a specific time?

The built-in Dynamic wallpapers change automatically throughout the day, but you cannot set a custom schedule. Third-party apps like Unsplash Wallpaper or Patterned can change your wallpaper on a timer you set, or pull random images from online galleries.

Why does my wallpaper look different on my external monitor?

Different monitors have different pixel densities and color profiles. The same image may appear darker, lighter, or with different colors depending on the monitor's settings. Adjust your monitor's brightness and contrast, or try a different image to see if the problem is with the image itself or the display.