Mac Hot Corners are built-in productivity shortcuts that trigger specific system actions when you move your mouse cursor into any of the four corners of your screen. They function like instant, gesture-based shortcuts without needing to touch your keyboard. How to Set Up Hot Corners
You can easily configure or disable this feature through your macOS system preferences: Open the System Settings app on your Mac. Click on Desktop & Dock in the left sidebar.
Scroll all the way to the bottom and click the Hot Corners… button.
Click the dropdown menu for any of the four corner boxes to assign an action.
Select the hyphen (–) option from the dropdown menu to disable a corner. Click Done to save your preferences. Available Actions You can map any of the following tasks to a corner:
Mission Control: Shows a birds-eye view of all your open application windows.
Application Windows: Isolates and displays all open windows of the specific app you are currently using.
Desktop: Swiftly hides all active windows to reveal your desktop files.
Notification Center: Pulls up your widgets and missed notifications.
Launchpad: Displays your full grid of installed applications.
Quick Note: Pops up a small notepad to quickly jot down ideas.
Start Screen Saver: Instantly kicks off your designated screen saver.
Disable Screen Saver: Temporarily overrides and stops your screen saver from activating while the mouse stays in that corner.
Put Display to Sleep: Blanks your screen instantly to save power.
Lock Screen: Instantly locks your session for quick privacy. Pro-Tips for Power Users
Prevent Accidental Triggers: It is easy to trigger an action accidentally when navigating to the Apple menu or the window close buttons. To prevent this, hold down a modifier key (like Command, Option, Control, or Shift) while choosing an action in the settings menu. The hot corner will then only trigger if you hold that specific key while throwing your cursor into the corner.
The Toggle Rule: Most Hot Corner actions operate as a simple toggle. Flicking your mouse into the corner activates the feature (like Mission Control), and throwing it back into the exact same corner turns it off.
Multiple Displays: If you use multiple monitors, note that Hot Corners only apply to the outermost four corners of your combined desktop layout rather than individual screens. MacMost.com Getting the Most From Hot Corners On Your Mac
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