
You may need to close and reopen the app to see the change in the Dock (folders and docs should update immediately).Drag the image on top of the existing app/folder/doc icon (you may need to enter your Mac’s password).Have an image for the new icon you’d like to use, jpg or png often works best.Click the app you’d like to change the icon for and use the keyboard shortcut command + I (or right-click and choose Get Info).Open Finder and navigate to Applications.How to change Mac icons for apps, folders, documents You’ll want to click the “Clean up system files” button, wait for it to finish, and then probably log off and back on.Whether you want to revert to an app’s previous icon, customize your apps, folders, documents with a theme, or make them match the modern macOS Monterey look, read on for how to change Mac icons.Ĭhanging Mac app icons is a simple and painless process and can be fun to do for a custom macOS look and feel. You can run a full disk cleanup if you want, but if you just want to quickly fix the problem, scroll down until you see Thumbnails and make sure that one is checked. To fix the problem, simply open up Disk Cleanup by typing “disk cleanup” into the start menu search, or find it under the accessories area. The problem is that all of the preview thumbnail images used in the icons are stored in a cache file, which sometimes goes all wacky and gets corrupted, and requires some cleanup. How does that even happen? Sometimes they start showing the right image, but then they’ll randomly revert back, and forget about using one of the other views. Here’s a good example of the problem… almost all of the folders under my picture library are showing the Windows Media Player icon. There’s a simple fix that almost always works. If you’ve ever encountered a problem where Windows seems to randomly assign the wrong icon thumbnails to your pictures, or sometimes they all show up with the same thumbnail picture for no reason.
