Select Get Info from the menu (or press Command + I ).
If icons look weird or don't update immediately, hold Option , right-click the Finder icon in the Dock, and choose Relaunch .
To change the image of a desktop icon on a Mac, you can follow these steps:
For the best results, use a .
If you have your new icon image already on your desktop, this is even faster. Right-click the target folder/app →right arrow ( Command + I ).
If you try to change a system app and are asked for a password, you may need administrator access.