Click the small icon thumbnail that is present at the top left-hand side of the Get Info window. Once you have the icon you wish to use on your Mac, right-click the icon and select Get Info from the popup menu. If you want to revert a file or folder to its default icon, open its Get Info panel again, click the icon in the panel to select it, and choose Edit -> Cut or use the keyboard shortcut Command-X. You can also create your own custom icons with the Image2icon app, or for a bit of fun, do them manually.
The good news is that macOS provides several customization options to help you organize your Mac desktop icons. Choose Edit -> Select All in Preview's menu bar, or use the keyboard shortcut Command-A. Question: Q: Desktop Icons Customize MacBook Pro mid 2010 15inch I need information on how to move desktop icons that I saved on the desktop on my MacBook Pro 15 inch mid 2010 model.The system preference on desktop does not contain the move or properly arrange all icons as they are immovable or stuck to the right side of screen. If you’re getting tired of looking at the same cluttered Mac desktop, it might be time to tidy things up a bit.Double-click the picture or icon you want to use to open it in your Mac's built-in Preview app.icns format, you can drag these icon types directly onto the icon in a file or folder's Info panel, thereby skipping the Preview steps described below.
Alternatively, there are a wealth of icon libraries hosted online, so you could try a web search for free icon pack downloads for Mac.
To customize a file or folder icon, simply follow the steps below.