This Recommendation | International Standard provides for the unique registration of JPEG and SPIFF Profiles, SPIFF Tags, SPIFF colour Spaces, application specific Markers, SPIFF Compression types and images registration authorities as defined in ITU-T Rec. T.81 | ISO/IEC 10981-1 and ITU-T Rec. T.84 | ISO/IEC 10918-3.

New Annex D contains a list of currently known Application Markers (APPn). The intended use of this list is to aid in the identification of APPn markers that are known to be commonly used.