Occasionally, users find that their icons refuse to change size or revert to default after a restart. Here is how to fix the most common issues:
If you have recently plugged your MacBook into an external 4K or 5K monitor, the icons might look massive or microscopic. This is usually due to the display resolution settings, not the icon settings. Go to System Settings > Displays and check the resolution/scaling. macOS scales the UI based on the resolution; if you are in "Low Resolution" mode, icons will look huge and pixelated. change icon size desktop mac
Here are the steps to change the icon size on a Mac desktop: Occasionally, users find that their icons refuse to