Three ways to take a screenshot on a Mac
You are probably familiar with the first two keyboard shortcuts, but the third might be the most useful of the bunch.
I’m getting ahead of myself. Let’s review the three keyboard shortcuts for taking screenshots on a Mac:
It captures a screenshot of your entire screen.
It turns the cursor into a crosshair, which you can drag to select a portion of your screen to capture. Release the mouse button or trackpad to take the shot.
3. Command-Shift-4, then space bar, then click on a window
Hitting the space bar turns the crosshair into a little camera icon, which you can move over any open window. Click on your desired window to take a screenshot of it. A screenshot captured by this method features a white border around the window with a bit of a drop shadow.