The fastest way to change your MacBook wallpaper
Open System Settings, click Wallpaper in the left sidebar, then select a new image from Apple's built-in collection or upload your own photo. The change takes effect when ready on your desktop and lock screen. The whole process takes about one minute.
Your wallpaper is stored locally on your Mac — it does not sync across devices unless you turn on iCloud Photos. If you use the same Apple ID on multiple Macs, you can choose to sync wallpapers, but each device can have a different one if you prefer.
Key Takeaways
- System Settings is the only place you need to go; third-party apps are not required.
- You can use any image file on your computer — JPG, PNG, HEIF — as long as it is at least 1024 by 768 pixels.
- Apple's built-in wallpapers are organized by category (Nature, Abstracts, Solid Colors) and update with each macOS release.
- Your lock screen and desktop can have different wallpapers, and you can set them to change automatically on a schedule.
How to use Apple's built-in wallpaper collection
Click the Apple menu in the top-left corner, then select System Settings. In the left sidebar, scroll down and click Wallpaper. A window opens showing thumbnails of available wallpapers organized by category.
Click any category — Nature, Abstracts, Solid Colors, or Collections — to see the images inside. Click an image once to preview it full-screen. If you like it, click Set Desktop, Set Lock Screen, or Set Both to explore it. The change happens when ready.
If you want the wallpaper to rotate through a series of images, click the image, then check the box that says "Change picture" and choose a time interval from the dropdown menu. Your Mac will switch to the next image in that category at the interval you set.
How to use your own photos as wallpaper
Open System Settings and click Wallpaper. At the top of the window, click the plus sign (+) to add a folder of images. Navigate to the folder containing your photos and click Open. Your folder now appears in the left sidebar under Custom.
Click your folder name to see all the images inside it. Click any image to preview it, then click Set Desktop, Set Lock Screen, or Set Both. You can also enable automatic rotation for custom folders the same way you do for Apple's collections.
Image files must be at least 1024 by 768 pixels to work as wallpaper. Most photos from a phone or camera meet this requirement. If an image is too small, System Settings will not let you select it.
Setting different wallpapers for desktop and lock screen
Your lock screen (the screen you see before you enter your password) and your desktop (the screen behind your open windows) can show different images. In System Settings, click Wallpaper, select an image, then click either Set Lock Screen or Set Desktop instead of Set Both.
If you have already set both to the same image and want to change one, click Wallpaper again, select a different image, and click the button for whichever screen you want to update. The other screen keeps its current wallpaper.
Troubleshooting wallpaper problems
If a wallpaper does not appear after you set it, restart your Mac. Click the Apple menu, select Restart, and wait for your Mac to turn back on. The wallpaper should display correctly when you log back in.
If an image file will not load in System Settings, check that the file format is JPG, PNG, HEIF, or TIFF. Right-click the image file, click Get Info, and look at the Kind field to see the format. If it is a different format (like WebP or BMP), convert it using a free online tool or image editor before trying again.
If your wallpaper reverts to the default after restart, the image file may have been moved or deleted. Check that the original file still exists in the same location. If you used a custom folder, make sure the folder has not been renamed or moved.
How wallpaper relates to your Mac's display and storage
Your wallpaper image is stored in a folder on your hard drive called Library, inside a subfolder for wallpapers. The image itself takes up very little space — even a high-resolution photo is usually less than 5 megabytes. Changing your wallpaper does not affect how much storage you have available.
The resolution of your wallpaper does not have to match your screen's resolution exactly. macOS automatically scales the image to fit your display. If your image is larger than your screen, macOS crops it. If it is smaller, macOS stretches it slightly, which may make it look blurry.
For the sharpest result, choose an image that is close to your Mac's native resolution. You can find your screen resolution in System Settings: click Displays in the left sidebar, then look for the resolution listed under Resolution.
Frequently Asked Questions
Can I use a video or animated GIF as my wallpaper?
No. macOS wallpapers must be static image files. You can set a folder of images to rotate on a schedule, which creates a slideshow effect, but individual video files or animated GIFs will not work.
Will my wallpaper sync to my iPhone or iPad?
Not automatically. Your wallpaper stays on your Mac unless you turn on iCloud Photos in System Settings. Even then, syncing iCloud Photos does not automatically set the same wallpaper on other devices — you would need to set it manually on each one.
What happens to my wallpaper when I update macOS?
Your custom wallpapers stay in place. If you were using one of Apple's built-in wallpapers, it remains set after the update. Apple sometimes adds new wallpapers with each macOS release, but your existing choice does not change.
Can I set different wallpapers for different user accounts on the same Mac?
Yes. Each user account has its own wallpaper setting. When you log in as a different user, that user's wallpaper appears. Changes you make in one account do not affect other accounts on the same Mac.