How to Add Spacers to the Mac Dock
ZachThis guide will show you how to add spacers to your Mac dock. Spacers are a great way to help you organize the apps that you keep in your dock.
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Navigate to Applications > Utilities > Terminal.
defaults write com.apple.dock persistent-apps -array-add '{tile-data={}; tile-type="spacer-tile";}'Then, paste the following and press enter:
killall DockThe dock will now refresh itself and a spacer will appear. You can move it by dragging it around with your mouse. For additional spacers, simply repeat the step above. To remove a spacer, right click it and select "Remove from dock".
Did you know you can also auto-hide your dock in macOS?
When customizing your Mac's Appearance, a good place to start is by changing your Mac's Dock.