[yash1th]

Wow. I didn’t know this until now. I always thought it’s used for just part of the screen. Thank you!

[wingerlang]

In Mojave you can use CMD-SHIFT-5 as well which will give you a GUI with all (?) options.

There is a way to capture the window shadowless as well I recall/

[japhyr]

I think holding the option key makes the capture shadowless.

[ezekg]

That is quite rad. Thanks for the tip!