If you want to know how to share your screen on Mac then the good news is, Macs already have a built-in screen sharing tool. Since OS X 10.4, Macs have a tool called Screen Sharing located in the CoreServices folder. As with many features built into OS X, it makes it simple to screen share on a Mac. Screen Sharing is extremely stable and auto-remembers important information such as your recent servers and passwords. Just follow these instructions to start sharing your screen:
Before you start, you need to make sure that Screen Sharing is enabled on the target Mac i.e. the Mac screen that you want to appear on your desktop. To do this, go to System Preferences and click on Sharing under Internet & Wireless Preferences.
Then activate screen sharing on mac by clicking the Screen Sharing box. You’ll notice it gives you an address such as vnc://22.214.171.124 that you’ll need to make a note of. This address is what you’ll use to connect to the Mac.
Method 1: Simply open your browser and type the VNC address that you obtained earlier into the URL bar and hit ENTER. A dialog box like the one below will appear:
Method 2: In Finder, select Go > Connect to Server and then type the VNC address of that you want to connect to. Screen Sharing will start automatically in your Dock.
Once you’ve started sharing, there are various different preferences that you can configure:
The great thing about this method is that it will connect to any server on Mac, Windows or Linux. The connection can be a bit slow compared to using a third-party screen sharing client but the image quality is very good. And if you are using Lion or above, you can switch to full screen mode using the expansion arrow.
Note that this method does not work for sharing an iPad screen. To do that, you’ll need to install a third party VNC client such as Jolllys Fast VNC or Chicken of the VNC. For a more detailed look at third party screen sharing apps for Mac, check our guide to the Best Remote Desktop Sharing Clients for Mac.