Save performance for the important tasks with this tool.
Super AutoCrop is an update for the standard AutoCrop Nuke script. It will create knobs to control the size of the cropped area.

To install, just edit your menu.py with this text:
import superAutoCrop
and copy the superAutoCrop.py to your .nuke folder.
You can find your .nuke folder at:
Linux: /home/login name/.nuke
macOS: /Users/login name/.nuke
Windows: drive letter:\Users\user name\.nuke