The second Mac shortcut you can use to take a is Shift + Command + 4 allowing you to select a portion of your desktop to capture and save as an image file which you can then share via social media, email, iMessage or simply save to your photos library for reference.ģ. The first is Shift + Command + 3 takes a complete copy of your entire screen and will save the image directly to your desktop by default although this can be changed and will be discussed later in this article.Ģ. First let’s cover the Mac shortcuts you can use to take a screenshot. Shortcuts for taking a screenshot on your Mac computerġ.