How To Change Wallpaper On Mac. While still inside the Desktop Screen Saver tab. Click the Desktop tab at the top of the window.
Drag the image you want to use as your new lock screen into the folder and replace the original image which should also be named lockscreenpng Youll. To customize your Mac screen change your desktop picture. How to Set Automatically Changing Wallpapers in Mac OS X Open System Preferences from the Apple menu Click on Desktop Screen Saver Go to Desktop tab then click the checkbox next to Change picture and set the time interval the default is a new background every 30 minutes.
Thats it now that selected image will be set as the desktop wallpaper.
On the left side are categories like Apple Photos and Folders. From the Desktop pane select a folder of images on the left then click an image on the right to change your desktop. Now click on the option Share and then choose set desktop picture. As soon as you click Choose that.