I have a 640 x 640 image... I am trying to crop the image using imagemagick (https://www.imagemagick.org/script/command-line-options.php#shave)
from the command line. I need to remove about 20 pixels from the bottom part of the image all the way from left to right. (a long strip along the bottom).
What would be the command to enter in the command line? I am using the windows version of this software. Thank you!