How to set a still wallpaper on a Mac
Stills from this gallery are ordinary image files. You set them the same way you set any picture in macOS: through System Settings. No extra app is required.
1. Download a size that fits the display
On a wallpaper page, choose 4K (3840×2160), 5K (5120×2880), 6K (6144×3456), or the 16:10 MacBook crop (3456×2234). If you are unsure, pick the next size above your display’s native resolution and let macOS scale it down. The size guide lists common Apple displays.
2. Open Wallpaper settings
Go to System Settings → Wallpaper. You can also Control-click the desktop and choose Change Wallpaper, on versions that still offer that shortcut.
3. Add the file
Drag the downloaded WebP onto the wallpaper preview, or use Add Folder or Photos (the exact label varies slightly by macOS version) and select the file. Apply it to the current display.
4. More than one display
Select each display’s thumbnail at the top of the Wallpaper pane and assign a file independently. A laptop and a Studio Display can use different scenes, or the same scene in two sizes.
Lock screen
Recent macOS versions let you set the lock screen separately from the desktop, still using a still image. If you want motion on the lock screen, that is a different problem; see the live wallpaper guide.