May also be called a “screen capture”. It’s an image of a computer screen or a mobile device and it may be saved as a graphic file. It may contain icons, running programs and so on.
There are many tools to make and save screenshots, but nowadays they’re unnecessary. For example, on a Windows platform just press the Print Screen button. A screenshot will be saved to the Clipboard. On macOS, press the Command+Shift+3 combination.
