How to take a screenshot on Chromebook

1. How do I take a screenshot on my Chromebook or Chromebox?
Press Ctrl + []]] = Captures the full screen and save it as a file into your Downloads folder.
Press Ctrl + F5 = The shortcut to take an entire screen on Chromebook.
2. How do I take a screenshot of a part of the screen?
Press Ctrl + Shift + []]] and use your mouse to click and drag a rectangle around the area you want to screenshot = Captures the partial screen and save it as a file into your Downloads folder.

or

Press Ctrl + Shift + F5 and draw a rectangle = The shortcut to take an entire screen on Chromebook.
3. How do I know if the screenshot works?

Your screenshot will appear in the bottom right corner of the screen.