How to mirror or extend your screen on a Mac
Interactive walkthrough — 5 steps. Click through at your own pace.
How:
Finder🔍
🔍displays
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fncontroloption⌘cmdtapspacecommandoption
The ⌘ key may show ⌘, command, or cmd — it sits either side of the space bar.
Simplified simulation — your app may show more buttons.
1
Press ⌘ and Space, then type "displays".
Spotlight is the fastest way into any System Settings pane.
Steps in text
- Press ⌘ and Space, then type "displays".
- Open Displays, then click the display you want to change.
- Click the "Use as" menu.
- Choose Extended display for space, or Mirror to duplicate.
- Done — the screen changes the moment you choose.