Exact crop
Created by Richard Saunders, last updated 14 Nov 2018
An exact crop defines a region of the original image with a given width and height and coordinates where the crop should be started.
The value for crop is four relative values representing the width
and height
and the starting coordinates of x
and y
all separated by commas. All the values must be greater than or equal to 0.

crop=1500,1500,2300,1280