How to Change the Desktop Background on a Mac
Your Mac's desktop background — also called the wallpaper — is one of the easiest things to customize, and macOS gives you several ways to do it. Whether you want a single static image, a rotating photo library, or a dynamic wallpaper that shifts with the time of day, the options are more flexible than most people realize.
The Standard Method: System Settings (macOS Ventura and Later)
On macOS Ventura (13) and newer, Apple reorganized its preferences into the System Settings app, which replaced the older System Preferences layout.
Here's how to get there:
- Click the Apple menu () in the top-left corner of your screen
- Select System Settings
- Click Wallpaper in the left sidebar
You'll see a grid of options including Apple's built-in wallpapers, dynamic options, color gradients, and any photos from your library. Click any image to apply it immediately.
The Older Method: System Preferences (macOS Monterey and Earlier)
If you're running macOS Monterey (12) or an earlier version, the path is slightly different:
- Open Apple menu → System Preferences
- Click Desktop & Screen Saver
- Select the Desktop tab
The left panel lets you browse folders — including Apple-provided images and your own photo library. Clicking any image sets it as your wallpaper instantly.
Setting Wallpaper Directly From an Image File 🖼️
You don't have to dig through System Settings to change your background. macOS lets you set a wallpaper directly from any image:
- Right-click (or Control-click) on an image file in Finder and look for Set Desktop Picture — this option appears with compatible image formats like JPEG, PNG, HEIC, and TIFF
- In the Photos app, right-click any photo and select Share → Set Desktop Picture
- In Preview, open an image, then go to Tools → Set Desktop Picture
These shortcuts bypass the settings menu entirely and apply the image in one step.
Dynamic Wallpapers and Auto-Rotation
macOS supports a few wallpaper modes beyond a single static image:
| Mode | What It Does |
|---|---|
| Static | Displays one fixed image at all times |
| Dynamic | Shifts appearance based on time of day using light/dark transitions |
| Auto | Matches your current Light or Dark Mode setting |
| Rotating / Shuffle | Cycles through a folder or album at a set interval |
Dynamic wallpapers (like the built-in macOS landscape scenes) use time-of-day and location data to gradually change throughout the day. They're stored as .heic files with multiple embedded images and require a Mac that supports the feature — generally any Mac capable of running macOS Mojave or later handles them without issue.
The rotating wallpaper option is available inside the wallpaper settings panel. You can point it at any folder of images and set the rotation interval — anywhere from every few seconds to once a day.
Multiple Displays and Spaces
If you use more than one monitor, macOS treats each display independently. You can set a different wallpaper on each screen by switching to that display's desktop before opening wallpaper settings, or by using the wallpaper panel which shows previews per monitor in newer macOS versions.
With Mission Control Spaces (multiple virtual desktops), each Space can also carry its own wallpaper. Right-click a desktop in Mission Control and use the wallpaper options from there, or simply change the wallpaper while on that specific Space.
Third-Party Wallpaper Apps
The built-in tools cover most use cases, but some users reach for third-party apps for more control:
- Apps like Unsplash Wallpapers pull new high-resolution images on a schedule
- Some apps offer video wallpapers or animated backgrounds, though these use more system resources
- Wallpaper managers can sync collections across multiple Macs via iCloud or their own cloud services
Animated and video wallpapers in particular can have a noticeable impact on battery life on MacBooks, since they keep the GPU more active than a static image would.
Where macOS Looks for Wallpaper Files
macOS stores its built-in wallpapers in /Library/Desktop Pictures/ — you can navigate there in Finder using Go → Go to Folder and entering that path. This is also where you can drop your own images if you want them to appear alongside Apple's defaults, though most users simply point the wallpaper picker at their own Photos library or a custom folder.
Supported image formats for desktop backgrounds include JPEG, PNG, HEIC, TIFF, and GIF (static frame only — macOS does not animate GIFs as wallpaper natively).
What Actually Shapes Your Experience
The steps above are consistent across recent macOS versions, but a few variables determine which specific options you'll see:
- macOS version — Ventura and Sonoma have a redesigned wallpaper panel with more categories; older versions have a simpler layout
- Apple Silicon vs Intel — both support dynamic wallpapers, but some newer wallpaper types introduced in recent macOS releases may only appear on newer hardware
- Display resolution and aspect ratio — a wide ultrawide monitor or an older non-Retina display may show cropping or scaling differences depending on the image dimensions you choose
- Whether you use Spaces — managing wallpapers across multiple virtual desktops adds a layer of coordination that single-desktop users don't need to think about
The mechanics of changing a wallpaper are simple. What varies is how much customization makes sense for the way you actually use your Mac day-to-day. 🖥️