I had no idea that you can make your dock icons transparent when you hide an app. In fact, I didn’t even know you can ‘hide’ apps….I always just either used ‘alt+tab’ to switch between apps, or minimized them. So I learned something!
To make your hidden app icons turn translucent in the Dock, all it takes is a simple Terminal command:
defaults write com.apple.Dock showhidden -bool YES
Then, you need to restart the Dock, which you can do using
To reverse this setting, simple run “No” instead of yes
defaults write com.apple.Dock showhidden -bool NO
Oh, and also the keyboard shortcut for hiding an app is “cmd+H”