JFIF (JPEG File Interchange Format)

Definition: The JPEG File Exchange Format[1]is a minimal file format that allows the exchange of JPEG bitstreams among different applications and platforms.

It uses a number of markers to break a JPEG stream down into its component structures. Markers are two bytes in length and the first byte always contains the value 0×FF; the second byte contains a code that specifies the marker type. Table 1 shows some of the most important JFIF markers, whose explanation follows.

Table 1. JFIF markers.