Turn off an external monitor on a Mac without unplugging it
Short answer: macOS has no setting to disable a connected display — only unplugging stops the Mac using it. Mirroring keeps the screen on with the same picture, and the monitor's own power button often leaves windows stranded on a screen you cannot see. Okie Dockie adds a Turn off option for each display in its menu bar: the Mac stops using that screen as if it were unplugged, with safeguards so you can never be left without a working display. It is free.
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Why you cannot just switch a screen off
Windows lets you disconnect a display in its settings while the cable stays in. A Mac does not: as long as a monitor is connected, macOS arranges your desktop across it. If you want to work on the laptop screen for a while, or keep a second monitor dark during a call, the only built-in answer is to pull the cable.
What macOS offers instead
- Mirroring — System Settings → Displays lets one screen copy another. The monitor stays lit, just showing the same picture, which is not the same as off.
- The monitor's power button — some monitors disconnect cleanly when switched off; many stay connected, and macOS keeps windows on a screen you can no longer see.
- Unplugging — works every time, and is exactly what you were trying to avoid.
Turn a display off from the menu bar
Okie Dockie adds the missing switch. From its menu bar icon, open Displays and choose Turn off next to any screen — an external monitor, or the laptop's built-in display while a monitor is in use. The Mac stops using it as though its cable had been removed, and your windows move to the screens that stay on. Choose Turn on to bring it back.
The safeguards
Turning a screen off is only safe if you can always get it back, so the feature is built around that:
- It asks first. A message asks whether to keep the display off; if you do not answer, it switches back on by itself after 15 seconds.
- One screen always stays on. The last working display is never offered.
- A shortcut restores everything. Control-Option-Command-D turns every display back on from anywhere.
- Nothing is permanent. Quitting Okie Dockie, logging out or restarting brings every display back.
macOS has no documented way to do this, so Okie Dockie uses the same undocumented system function that other display utilities rely on. It works on most Macs and monitors; on a setup where macOS refuses, the app says so and nothing changes.
Get every Chrome profile into your Dock
Okie Dockie builds a real Dock icon for each Chrome profile you use, badged with that profile's own picture. Click one and you land back in the window it already had open.
Everything except Chrome profile icons is free forever, and the profile icons come with a 7-day free trial that starts on its own — no sign-up, no card. macOS 13+, Apple Silicon and Intel.
Frequently asked questions
Can you disable an external monitor on a Mac without unplugging it?
Not with macOS settings alone. Okie Dockie adds a Turn off option for each display in its menu bar, which makes the Mac stop using that screen until you turn it back on.
Can I turn off my MacBook screen and only use the external monitor?
Yes — with Okie Dockie you can turn off the built-in display while an external monitor is in use, without closing the lid.
What if I turn off a display by mistake?
It turns back on by itself after 15 seconds unless you confirm, Control-Option-Command-D turns every display back on, and the last working display can never be turned off.
Is mirroring the same as turning a monitor off?
No. Mirroring keeps the monitor on and shows the same picture as another screen.
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