To share a Mac screen in FaceTime, start the call first, then click the "Share My Screen" button, select Share the entire screen, a specific window, or a part of the area, and then pause or stop sharing through the top toolbar. The steps are as follows: 1. Start a video or audio call first; 2. Click the "Share My Screen" option on the call interface; 3. Select the sharing range (full screen, window or area); 4. Use the top toolbar to control the sharing status; 5. Stop sharing through the menu bar button or end the call. Make sure to use a newer macOS version and log in to iCloud to support the feature.

Sharing your Mac screen during a FaceTime call is actually pretty straightforward, but it's not always obvious how to do it if you've never done it before. The feature is built right into macOS, so you don't need any third-party tools — just a few taps in the right place.

Start a FaceTime call first

You can't share your screen unless the call is already in progress. So start a video or audio call with the person you want to share with. Once they're on the line, you're ready for the next step.

Tap the "Share My Screen" button

While on the call, look for the screen sharing option:

• In the FaceTime window, move your mouse to reveal the controls (if they're hidden).
• Click the arrow ▼ next to the mute or camera button.
• You'll see an option labeled “Share My Screen” — click that.

FaceTime will ask whether you want to share your entire screen, a specific window, or a portion of the screen. Choose what works best for your situation:

• Sharing the whole screen is good for walkthroughs or general demos.
• Choosing a specific window keeps things focused and avoids showing unrelated parts of your desktop.
• Selecting a portion lets you highlight a particular area without giving full visibility.

Once you've made your selection, click “Share” and your screen will begin streaming live to the other person.

Control what's show — and when to stop

While sharing, there's a small toolbar at the top of your screen that lets you:

• Pause sharing
• Switch to a different window or area
• Stop sharing entirely

It's easy to forget you're broadcasting, so be mindful of switching apps or opening files during the session. If you want to temporarily hide what you're doing, just click “Pause Broadcast” from the menu bar.

Also, if you end the FaceTime call, screen sharing stops automatically. But if you just want to stop sharing and keep talking, click the green stop button in the menu bar or go back into the FaceTime controls and tap “Stop Sharing.”

Keep in mind that screen sharing works best on newer versions of macOS — think Big Sur and up. If you're having trouble finding the option, make sure your system is updated and that both devices are signed into iCloud with Apple IDs.

Basically that's it. It's not complicated once you know where to look, but it's easy to miss the exact steps if you're guessing around the interface.

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