The fastest way to change your Mac wallpaper

Open System Settings (or System Preferences on older Macs), click Wallpaper in the sidebar, then select a new image from the built-in collections or click the plus sign to add your own photo. That's it—your desktop updates when ready.

If you're using an older Mac running Monterey or earlier, the path is slightly different: click the Apple menu, choose System Preferences, then Desktop & Screen Saver. The process is the same from there.

You can set different wallpapers for your main display and any external monitors you have connected. You can also choose to have macOS change your wallpaper automatically at set intervals—every hour, every day, or when you wake your Mac.

Key Takeaways

  • Open System Settings, click Wallpaper, and choose from built-in collections or add your own photo using the plus button.
  • Your Mac applies the wallpaper to all spaces and desktops when ready, and you can set different images for each display if you have multiple monitors.
  • You can schedule automatic wallpaper changes by selecting a collection and choosing an interval like hourly or daily.
  • Photos you add from your Mac's storage appear in a custom collection that you can manage or delete anytime.

Using built-in wallpaper collections

macOS comes with several wallpaper collections organized by theme: Dynamic (which changes with time of day), Light Abstracts, Dark Abstracts, Solid Colors, and others depending on your macOS version. Each collection contains multiple images you can preview before selecting.

To browse a collection, open System Settings, click Wallpaper, then click any collection name on the left. The preview pane on the right shows all available images in that collection. Click the one you want, and it becomes your wallpaper when ready.

Dynamic wallpapers are popular because they shift appearance throughout the day—for example, Big Sur shows a landscape that brightens at sunrise and darkens at sunset. If you prefer a static image, choose any non-Dynamic collection instead.

Adding your own photos as wallpaper

To use a photo from your Mac, open System Settings, click Wallpaper, then click the plus sign at the bottom of the collections list. A file browser opens—navigate to the folder where your photo is stored and select it. The image is added to a custom collection labeled with the folder name.

You can add multiple photos to the same custom collection by clicking the plus sign again and selecting additional images from the same folder. If you add photos from different folders, each folder becomes its own separate collection.

Your custom collections stay in System Settings even after you change wallpapers, so you can switch back to them anytime. To remove a custom collection, right-click it in the list and select Delete.

Setting wallpaper to change automatically

If you want your wallpaper to rotate through multiple images, select a collection (either built-in or custom), then look for the dropdown menu that says Change picture. Choose how often you want the change to happen: every 30 minutes, hourly, daily, weekly, or when you wake your Mac.

This feature works best with collections that contain many images. If you select a collection with only one or two photos, the rotation will be noticeable but limited. Dynamic collections rotate their appearance based on time of day rather than a schedule you set.

Managing wallpaper for multiple displays

If you have an external monitor connected to your Mac, you can set different wallpapers for each display. In System Settings under Wallpaper, you'll see thumbnails for each connected display at the top of the window. Click the display you want to customize, then choose a wallpaper for it.

Changes to one display's wallpaper don't affect the others, so you can have a professional image on your external monitor and something personal on your laptop screen. If you disconnect the external monitor and reconnect it later, your Mac remembers which wallpaper you assigned to it.

Troubleshooting wallpaper changes that don't stick

If you change your wallpaper but it reverts to the previous one after restart, your Mac may have a cached preference. Restart your Mac and when ready open System Settings to reapply the wallpaper. If the problem persists, try removing the custom collection and re-adding the photo.

If you're using a photo that's stored on an external drive or network location, make sure that location is accessible before setting it as wallpaper. If the Mac can't find the image file later, it may fall back to a default wallpaper. Keep frequently-used wallpaper photos in your Pictures folder or another location on your Mac's internal drive.

On very old Macs running High Sierra or earlier, the System Preferences window may freeze when loading wallpaper collections. If this happens, try selecting a solid color wallpaper first, then restart System Preferences and try again.

Frequently Asked Questions

Can I use a photo from the internet as my wallpaper?

Yes. Save the image to your Mac (right-click and choose Save Image As), then open System Settings, click Wallpaper, click the plus sign, and select the saved file. The image is now available in your custom collections.

What image size works best for wallpaper?

macOS scales images to fit your display, so any size works, but images at least as wide as your screen resolution look sharpest. For a 1440×900 display, an image 1440 pixels wide or larger will display without blurriness. Very small images may appear pixelated when stretched.

Can I set different wallpapers for different user accounts on the same Mac?

Yes. Each user account has its own System Settings, so wallpaper choices are separate. When you log in as a different user, their wallpaper appears. Changes you make don't affect other accounts on the Mac.

Why does my wallpaper look different on my external monitor than on my laptop screen?

Different displays have different resolutions and aspect ratios, so the same image may appear cropped or stretched differently on each one. If the image doesn't fit well on one display, try a different photo or adjust which display uses which wallpaper in System Settings.

Can I use a video or animated GIF as wallpaper?

No. macOS wallpaper must be a static image file (JPG, PNG, or similar) or a built-in Dynamic wallpaper. Animated files and videos are not supported. Dynamic wallpapers are the closest alternative if you want movement or change throughout the day.