ScreenShot on PC
If you want to grab an image of your entire screen including all windows, toolbars, docks and any part of your desktop that’s peaking through the easiest option is to use keyboard shortcuts.
Look for the Print Screen key on your keyboard, which might be labeled PrtScn or something similar.
To capture the entire screen (everything you see on the screen, including all open windows), press the PrtScn button. This screenshot will be placed on your clipboard for you to paste wherever you want. You can also press Windows Key + Print Screen to save the screenshot to your [User]\Pictures\Screenshots folder.
Screenshot On Mac OS
To capture the entire screen, press Cmd + Shift + 3 at the same time. When you do, you’ll hear a click, and the screenshot thumbnail will appear in the lower right corner of your screen
Screenshots are automatically saved as PNG files to your desktop. If you want to save to the clipboard instead, press and hold Control+Cmd+Shift+3