I used the following Terminal commands to disable animations:

# opening and closing Quick Look windows 
defaults write -g QLPanelAnimationDuration -float 0

# showing a toolbar or menu bar in full screen
defaults write -g NSToolbarFullScreenAnimationDuration -float 0

from here: How to turn off all animations on OS X

Are there Terminal commands to re enable them, just in case?

Also, that link suggested TinkerTool, but which option in TinkerTool is for disabling the Quick Look animation?

1 Answer 1


Try the following to re-enable them:

defaults delete -g QLPanelAnimationDuration
defaults delete -g NSToolbarFullScreenAnimationDuration

Those commands will delete the settings changes that you made, and OS X will reset them to the default settings.

Source: Wikipedia


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