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Format

Exchangeable Image File Format (Compressed)

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Summary

Name
Exchangeable Image File Format (Compressed)
Version
2.1
Identifiers
  • MIME: image/jpeg
  • PUID: x-fmt/390
Format type
Image (Raster)
Description
Exchangeable image file format (Exif) is a standard that specifies the formats for images, sound, and ancillary used by digital cameras (including smartphones), scanners and other systems handling image and sound files recorded by digital cameras.
File extensions
jpg, jpeg
Source
Digital Preservation Department / The National Archives

Relationships

Has priority over
Is previous version of
Is subsequent version of

Internal signatures

EXIF Compressed Image 2.1 (big-endian)

Note
SOI and APP1, EXIF IFD (EXIF ver=2.1), EOI marker

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
None
Byte Sequence
FFD8FFE1{2}4578696600004D4D002A*900000070000000430323130
Endianness
None
Min Frag Length
Absolute from EOF
Offset
0
Max offset
16000
Byte Sequence
FFD9
Endianness
None

EXIF Compressed Image 2.1 (little-endian)

Note
SOI and APP1, EXIF IFD (EXIF ver=2.1), EOI marker

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
None
Byte Sequence
FFD8FFE1{2}45786966000049492A00*009007000400000030323130
Endianness
None
Min Frag Length
Absolute from EOF
Offset
0
Max offset
16000
Byte Sequence
FFD9
Endianness
None

Changelog

  • Updated in V95

    Release date
    9 May 2019

    Exchangeable Image File Format (Compressed) 2.1: Added .jpeg as extension. Requested by National Library of New Zealand.

  • Updated in V75

    Release date
    17 July 2014

    Exchangeable Image File Format (Compressed) 2.1: Description added and EOF offset increased. Submitted by Public Record Office of Northern Ireland.

  • Updated in V63

    Release date
    29 August 2012

    Exchangeable Image File Format (Compressed) 2.1: Signature refined through PRONOM Research in collaboration with the National Library of New Zealand.