what type of file is jpg
The JPG file type is primarily associated with 'JPEG/JIFF Image'. A lossy bitmap image format used by digital cameras and to display photographs on the Web (along with many other like uses). If you plan to edit a JPEG file save it first as a BMP or other lossless bitmap format. Edit that and then use SaveAs to resave as a JPEG file. If you edit and reedit a JPEG file you will suffer a compression loss on each read/save operation. The Macintosh type is: JPEG.