https://github.com/microsoft/PowerToys/releases
Default hotkeys
Win+Shift+Ctrl +T (Mirror selection)
Win+Shift+Ctrl +R (Crop selection)
On my Win10 it loses the menu when reverting and need to run Biab again (current bug ? other apps do the same).

Fit Screen
[Linked Image from reatrak.com]

Fit Screen
[Linked Image from reatrak.com]

If you are running as administrator:
[Linked Image from reatrak.com]