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Single monitor full screen mode on macOS

Improve your multi-monitor setup.


I work with a two-monitor setup and one day I was working on an online course. I tried to watch a video on my secondary monitor (a laptop) and work on the primary screen (a 27" display). The video was a bit small, so I toggled it fullscreen on my secondary monitor. The video indeed became fullscreen, but at the same time my primary screen went black.

This behavior, however, can be changed in MacOS preferences. Go to System Preferences > Mission Control and toggle Displays have separate Spaces.

A macos setting to enable full screen mode only on one display
This setting makes it possible to toggle a screen independently to a full-screen mode.

Next time you toggle an app full screen, the other screen should stay usable.

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