Online picture cropping
From v.0.5 onwards cropping is synchronized with other options.
What is cropping?
Cropping is cutting a portion of a picture out of an initially recorded image in order to optimize the frame for the viewer. Cropping decides about the way in which a recorded object is integrated into the entire frame and thus – the way this object affects the viewer. Other names referring to cropping are: framing, image cutting or slicing.
(source Wikipedia)