Customize the wallpaper on your Mac
You can change the picture that’s displayed on your desktop. Choose from a variety of pictures or colors provided by Apple, or use your own images.
Choose a built-in wallpaper
Go to the System Settings app
on your Mac.Click Wallpaper
in the sidebar. (You may need to scroll down.)Select a wallpaper from one of the available categories:
Dynamic Wallpapers: These images brighten and darken, based on the time of day for your current location.
Your photos: Choose a single photo, image file, or photo set.
Landscape, Cityscape, Underwater, and Earth aerials: These aerial images animate as you lock or unlock your Mac, showing dramatic views. By default, the aerial wallpaper you select is also used as your screen saver.
Shuffle Aerials: These still images change at an interval you set.
Pictures: These still images show creative pictures.
Colors: These swatches apply a solid-color background for your desktop.
Set options for your wallpaper.
Options appear next to the wallpaper name at the top of the screen and vary based on the wallpaper you choose. For example, you can:
Turn on a slow-motion aerial as a screen saver, using the aerial of your wallpaper.
Choose how often to shuffle through aerials.
Choose light or dark still versions of Dynamic Wallpaper.
Add custom wallpaper
Go to the System Settings app
on your Mac.Click Wallpaper
in the sidebar. (You may need to scroll down.)Scroll down to Your Photos, click the Add Photo button, then do any of the following:
Add a photo from your Photos library: Click Choose from Photos, then select a photo.
Add an image file: Click Choose File, select a file, then click Open. You can also drag an image from your desktop or a folder onto the thumbnail at the top of Wallpaper settings.
Add a folder from the Finder: Click Choose Folder, select a folder, then click Open.
Add an album or folder from the Photos app: Select an album or folder under Photo Sets.
Tip: You can choose the size and position of your wallpaper image, shuffle images, and more. See Wallpaper settings.
You can also choose custom wallpaper without opening Wallpaper settings.
Use a picture you find on the web: Control-click the image in the Safari window, then choose Use Image as Desktop Wallpaper.
Use an image that you saved on your Mac: Click
in the Dock to open a Finder window. Control-click the image file, then click Set Desktop Picture.Use a photo from your Photos library: Go to the Photos app
, select a photo, click 
in the Photos toolbar, then click Set Wallpaper.
Remove custom wallpaper
Go to the System Settings app
on your Mac.Click Wallpaper
in the sidebar. (You may need to scroll down.)Hold the mouse pointer over the photo, folder, or album that you want to remove, then click
.Note: You can’t remove a photo from the Your Photos section if the photo is currently selected as your wallpaper.