How can I reduce the amount of time before a macOS / OS X Notification Center banner dismisses itself?

2 Answers 2


Open your terminal and run this command

defaults write com.apple.notificationcenterui bannerTime SECONDS

where SECONDS is a number for how many seconds you want the banner to be displayed.

  • Well, it doesn't work again in Monterey, the defaults command takes no effect.
    – chatski
    Jan 26, 2022 at 8:58

Currently, you cannot change the duration. But you can dismiss it manually by placing the cursor over the banner and doing a two finger swipe from left to right on a trackpad (or a one finger swipe on a magic mouse).


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