I wrote the script which examine width and height of JPEG. http://homepage.mac.com/udi/stack/getJpegPixelSize.hqx It is NOT difficult. It chases markers, and looks for data. But it is terribly TROUBLESOME. I have not tried Exif, but its basic structure is the same. UDI eudio at chabashira.co.jp http://homepage.mac.com/udi/