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How to Speed Up Mac

For ordinary users, most improvements in the new OS X are not immediately noticeable. Especially when it comes to the system changes, related to performance and security. Here are 10 useful commands that will speed up the response of the system in the latest version of OS X.


So, in order to use commands, open Terminal. Go to program folders and open Utilities. Copy the appropriate command in the Terminal and press Enter.

OS X User Interface

  1. Turn off the animation of opening and closing windows

defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool false

  1. Disable the animation of opening Quick Look panel

defaults write -g QLPanelAnimationDuration -float 0

  1. Speed up playback when resizing windows (Apple-app)

defaults write NSGlobalDomain NSWindowResizeTime -float 0.001

  1. Disable the animation when you open the information window in the Finder (Cmd⌘ + i)

defaults write DisableAllAnimations -bool true

  1. Disable the animation of opening the application from the Dock

defaults write launchanim -bool false

  1. Speed up the animation of Mission Control

defaults write expose-animation-duration -float 0.1

  1. Disable the delay when hiding the Dock

defaults write autohide-delay -float 0


  1. Disable the animation of sending mails and responses

defaults write DisableReplyAnimations -bool true
defaults write DisableSendAnimations -bool true


  1. Disable standard delay of page rendering

defaults write WebKitInitialTimedLayoutDelay 0.25

  1. Speed up keys response on the keyboard

defaults write NSGlobalDomain KeyRepeat -int 0

After executing all of the commands you will need to reboot your Mac. After re-logging in the system the speed of your OS X El Capitan will be greatly increased.

How to undo changes

To undo any changes, you can use the command delete, adding the setting that you want to restore to default. For example, to cancel the 10th command you need to enter:

defaults delete NSGlobalDomain KeyRepeat

and then restart Mac.


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