Ordinarily, this kind of work requires that you organize your images, open them one at a time in an image editor, convert them, save them, and move on to the next image.
Usoro a na-ewe obere ọrụ, dị ka ị ga-ebu ụzọ mepụta ihe ngosi gị, zọpụta ha dị ka foto, ma debeghachi ha na slides ọhụrụ.