Swap any app icon on your Mac in three quick steps — or give your iPhone home screen a fresh look with Shortcuts.

Choose an icon and download the .icns file to a folder you can find quickly.
Right-click the app in Finder and choose Get Info to open the Info window.

Drop the downloaded .icns file on the small icon at the top-left of the Info window.

Tip: if the new icon doesn’t show up right away, quit and reopen the app, or run “killall Dock” in Terminal. Some apps may reset their icon after an update.