How To Change Display Picture On Mac. Launch System Preferences from the Dock or by clicking the Apple button on the top left of your screen. Although your profile picture is typically chosen when you initially set up your Mac computer you can change your profile picture at any time through your System Preferences menu.

This will cut off part of the photo if its size ratio is different from your screen. How to resize your picture to fit Mac login screen. Youll see a list of users in the left.
If youre using multiple displays this changes the wallpaper of your primary display only.
The images that come with Mac are great but maybe you want to change the wallpaper using your own picture. Find the file named Mojaveheic. On your Mac choose Apple menu System Preferences click Desktop Screen Saver then click Desktop. Youll see a list of users in the left.
