Chromebook Screenshots
To take a screenshot of the entire screen, use the Ctrl + Show windows key combination. The Show windows key, which looks like a rectangle with two lines on the right side, is on the top row of the keyboard (it’s the equivalent of the F5 key on a PC keyboard).
To take a screenshot of a portion of the screen, press the Shift + Ctrl + Show windows keys. You’ll see a crosshair icon; click and drag it until the part of the screen you want to copy is highlighted, and then let go.
Any screenshot you take will end up in the Downloads folder. To find the folder:
Select the Launcher at the left corner of your display.
Look for the icon named “Files” under the search field. If you don’t see it, select the up arrow and look for the “Files” app there.