JPG Lossless Crop
Click on the Options Menu, then JPG Lossless Crop. A dialog allows you to set where the result crop file will be saved.
Note: You can process many JPG files, if you open the Thumbnails window and select several JPGs before you start this dialog.
Note: Lossless JPG crop works better, if the selection coordinates/dimensions are a multiple of 16 (JPG specification). If this is not the case, the result image may have slightly different dimensions or the start point.
Click Start to crop the loaded JPG or Cancel to exit.