Screenshooter

[bitsnpcs]

Above is to do it in the terminal, you can save and recall the command by number in history.
Or
You can go to Menu>Settings>Keyboard>Application Shortcuts 

Click Add at the bottom and copy in the entire command for

Code:

--fullscreen

and choose your shortcut key/s for running it from the keyboard, example Alt +1.

Repeat the process entirely 2 more times, example choosing Alt + 2 for entire command for

Code:

--window

and the final new keyboard shortcut as Alt + 3 for entire command for

Code:

--region

Afterwards to do a screenshot you only need to press Alt and 1 number key, then enter x1 time, so 3 keystrokes, compared to typing the command each time, unless you are preferring terminal.

I prefer to use screenshot exactly how it is in LL currently, but it's good there are more than one option.