Eextension SS_IM allows to upload and sort images of the product with Drag&Drop in an easy manner.
And delete an images,associated with product from server, if they are not used anywhere else (other products or categories), even when you delete the product,
you can sort images by dragging them in the order you like them to appear on the product screen is the first image in the list will automatically become your leading image.
Compress image large size, which increases the space on the server.