## IPTC Tags

The tags listed below are part of the International Press Telecommunications Council (IPTC) and the Newspaper Association of America (NAA) Information Interchange Model (IIM). This is an older meta information format, slowly being phased out in favor of XMP. IPTC information may be embedded in JPG, TIFF, PNG, MIFF, PS, PDF, PSD and DNG images.

The IPTC specification dictates a length for ASCII (`string` or `digits`) values. These lengths are given in square brackets after the Writable format name. For tags where a range of lengths is allowed, the minimum and maximum lengths are separated by a comma within the brackets. IPTC strings are not null terminated.

IPTC information is separated into different records, each of which has its own set of tags. See http://www.iptc.org/std/IIM/4.1/specification/IIMV4.1.pdf for the official specification.

When writing, ExifTool issues a minor warning and truncates the value if it is longer than allowed by the IPTC specification. Minor errors may be ignored to allow writing of longer values, but beware that values like this may cause problems for other IPTC readers.

Separate IPTC date and time tags may be written with a combined date/time value and ExifTool automagically takes the appropriate part of the date/time string depending on whether a date or time tag is being written. This is very useful when copying date/time values to IPTC from other metadata formats.

IPTC time values include a timezone offset. If written with a value which doesn't include a timezone then the current local timezone offset is used (unless written with a combined date/time, in which case the local timezone offset at the specified date/time is used, which may be different due to changes in daylight savings time).

> Record | Tag Name | Writable | Values / Notes
> --- | --- | --- | ---
> 1 | IPTCEnvelope | - | --> IPTC EnvelopeRecord Tags
> 2 | IPTCApplication | - | --> IPTC ApplicationRecord Tags
> 3 | IPTCNewsPhoto | - | --> IPTC NewsPhoto Tags
> 7 | IPTCPreObjectData | - | --> IPTC PreObjectData Tags
> 8 | IPTCObjectData | - | --> IPTC ObjectData Tags
> 9 | IPTCPostObjectData | - | --> IPTC PostObjectData Tags

## IPTC EnvelopeRecord Tags

> Tag ID | Tag Name | Writable | Values / Notes
> --- | --- | --- | ---
> 0 | EnvelopeRecordVersion | int16u: |
> 5 | Destination | string[0,1024]+ |
> 20 | FileFormat | int16u | 0 = No ObjectData 1 = IPTC-NAA Digital Newsphoto Parameter Record 2 = IPTC7901 Recommended Message Format 3 = Tagged Image File Format (Adobe/Aldus Image data) 4 = Illustrator (Adobe Graphics data) 5 = AppleSingle (Apple Computer Inc) 6 = NAA 89-3 (ANPA 1312) 7 = MacBinary II 8 = IPTC Unstructured Character Oriented File Format (UCOFF) 9 = United Press International ANPA 1312 variant 10 = United Press International Down-Load Message 11 = JPEG File Interchange (JFIF) 12 = Photo-CD Image-Pac (Eastman Kodak) 13 = Bit Mapped Graphics File [.BMP] (Microsoft) 14 = Digital Audio File [.WAV] (Microsoft & Creative Labs) 15 = Audio plus Moving Video [.AVI] (Microsoft) 16 = PC DOS/Windows Executable Files [.COM][.EXE] 17 = Compressed Binary File [.ZIP] (PKWare Inc) 18 = Audio Interchange File Format AIFF (Apple Computer Inc) 19 = RIFF Wave (Microsoft Corporation) 20 = Freehand (Macromedia/Aldus) 21 = Hypertext Markup Language [.HTML] (The Internet Society) 22 = MPEG 2 Audio Layer 2 (Musicom), ISO/IEC 23 = MPEG 2 Audio Layer 3, ISO/IEC 24 = Portable Document File [.PDF] Adobe 25 = News Industry Text Format (NITF) 26 = Tape Archive [.TAR] 27 = Tidningarnas Telegrambyra NITF version (TTNITF DTD) 28 = Ritzaus Bureau NITF version (RBNITF DTD) 29 = Corel Draw [.CDR]
> 22 | FileVersion | int16u |
> 30 | ServiceIdentifier | string[0,10] |
> 40 | EnvelopeNumber | digits[8] |
> 50 | ProductID | string[0,32]+ |
> 60 | EnvelopePriority | digits[1] | 0 = 0 (reserved) 1 = 1 (most urgent) 2 = 2 3 = 3 4 = 4 5 = 5 (normal urgency) 6 = 6 7 = 7 8 = 8 (least urgent) 9 = 9 (user-defined priority)
> 70 | DateSent | digits[8] |
> 80 | TimeSent | string[11] |
> 90 | CodedCharacterSet | string[0,32]! | (values are entered in the form "ESC X Y[, ...]". The escape sequence for UTF-8 character coding is "ESC % G", but this is displayed as "UTF8" for convenience. Either string may be used when writing. The value of this tag affects the decoding of string values in the Application and NewsPhoto records. This tag is marked as "unsafe" to prevent it from being copied by default in a group operation because existing tags in the destination image may use a different encoding. When creating a new IPTC record from scratch, it is suggested that this be set to "UTF8" if special characters are a possibility)
> 100 | UniqueObjectName | string[14,80] |
> 120 | ARMIdentifier | int16u |
> 122 | ARMVersion | int16u |

## IPTC ApplicationRecord Tags

> Tag ID | Tag Name | Writable | Values / Notes
> --- | --- | --- | ---
> 0 | ApplicationRecordVersion | int16u: |
> 3 | ObjectTypeReference | string[3,67] |
> 4 | ObjectAttributeReference | string[4,68]+ |
> 5 | ObjectName | string[0,64] |
> 7 | EditStatus | string[0,64] |
> 8 | EditorialUpdate | digits[2] | 01 = Additional language
> 10 | Urgency | digits[1] | 0 = 0 (reserved) 1 = 1 (most urgent) 2 = 2 3 = 3 4 = 4 5 = 5 (normal urgency) 6 = 6 7 = 7 8 = 8 (least urgent) 9 = 9 (user-defined priority)
> 12 | SubjectReference | string[13,236]+ |
> 15 | Category | string[0,3] |
> 20 | SupplementalCategories | string[0,32]+ |
> 22 | FixtureIdentifier | string[0,32] |
> 25 | Keywords | string[0,64]+ |
> 26 | ContentLocationCode | string[3]+ |
> 27 | ContentLocationName | string[0,64]+ |
> 30 | ReleaseDate | digits[8] |
> 35 | ReleaseTime | string[11] |
> 37 | ExpirationDate | digits[8] |
> 38 | ExpirationTime | string[11] |
> 40 | SpecialInstructions | string[0,256] |
> 42 | ActionAdvised | digits[2] | 01 = Object Kill 02 = Object Replace 03 = Ojbect Append 04 = Object Reference
> 45 | ReferenceService | string[0,10]+ |
> 47 | ReferenceDate | digits[8]+ |
> 50 | ReferenceNumber | digits[8]+ |
> 55 | DateCreated | digits[8] |
> 60 | TimeCreated | string[11] |
> 62 | DigitalCreationDate | digits[8] |
> 63 | DigitalCreationTime | string[11] |
> 65 | OriginatingProgram | string[0,32] |
> 70 | ProgramVersion | string[0,10] |
> 75 | ObjectCycle | string[1] | 'a' = Morning 'b' = Both Morning and Evening 'p' = Evening
> 80 | By-line | string[0,32]+ |
> 85 | By-lineTitle | string[0,32]+ |
> 90 | City | string[0,32] |
> 92 | Sub-location | string[0,32] |
> 95 | Province-State | string[0,32] |
> 100 | Country-PrimaryLocationCode | string[3] |
> 101 | Country-PrimaryLocationName | string[0,64] |
> 103 | OriginalTransmissionReference | string[0,32] |
> 105 | Headline | string[0,256] |
> 110 | Credit | string[0,32] |
> 115 | Source | string[0,32] |
> 116 | CopyrightNotice | string[0,128] |
> 118 | Contact | string[0,128]+ |
> 120 | Caption-Abstract | string[0,2000] |
> 121 | LocalCaption | string[0,256] | (I haven't found a reference for the format of tags 121, 184-188 and 225-232, so I have just make them writable as strings with reasonable length. Beware that if this is wrong, other utilities won't be able to read these tags as written by ExifTool)
> 122 | Writer-Editor | string[0,32]+ |
> 125 | RasterizedCaption | string[7360] |
> 130 | ImageType | string[2] |
> 131 | ImageOrientation | string[1] | 'L' = Landscape 'P' = Portrait 'S' = Square
> 135 | LanguageIdentifier | string[2,3] |
> 150 | AudioType | string[2] | '0T' = Text Only '1A' = Mono Actuality '1C' = Mono Question and Answer Session '1M' = Mono Music '1Q' = Mono Response to a Question '1R' = Mono Raw Sound '1S' = Mono Scener '1V' = Mono Voicer '1W' = Mono Wrap '2A' = Stereo Actuality '2C' = Stereo Question and Answer Session '2M' = Stereo Music '2Q' = Stereo Response to a Question '2R' = Stereo Raw Sound '2S' = Stereo Scener '2V' = Stereo Voicer '2W' = Stereo Wrap
> 151 | AudioSamplingRate | digits[6] |
> 152 | AudioSamplingResolution | digits[2] |
> 153 | AudioDuration | digits[6] |
> 154 | AudioOutcue | string[0,64] |
> 184 | JobID | string[0,64] |
> 185 | MasterDocumentID | string[0,256] |
> 186 | ShortDocumentID | string[0,64] |
> 187 | UniqueDocumentID | string[0,128] |
> 188 | OwnerID | string[0,128] |
> 200 | ObjectPreviewFileFormat | int16u | 0 = No ObjectData 1 = IPTC-NAA Digital Newsphoto Parameter Record 2 = IPTC7901 Recommended Message Format 3 = Tagged Image File Format (Adobe/Aldus Image data) 4 = Illustrator (Adobe Graphics data) 5 = AppleSingle (Apple Computer Inc) 6 = NAA 89-3 (ANPA 1312) 7 = MacBinary II 8 = IPTC Unstructured Character Oriented File Format (UCOFF) 9 = United Press International ANPA 1312 variant 10 = United Press International Down-Load Message 11 = JPEG File Interchange (JFIF) 12 = Photo-CD Image-Pac (Eastman Kodak) 13 = Bit Mapped Graphics File [.BMP] (Microsoft) 14 = Digital Audio File [.WAV] (Microsoft & Creative Labs) 15 = Audio plus Moving Video [.AVI] (Microsoft) 16 = PC DOS/Windows Executable Files [.COM][.EXE] 17 = Compressed Binary File [.ZIP] (PKWare Inc) 18 = Audio Interchange File Format AIFF (Apple Computer Inc) 19 = RIFF Wave (Microsoft Corporation) 20 = Freehand (Macromedia/Aldus) 21 = Hypertext Markup Language [.HTML] (The Internet Society) 22 = MPEG 2 Audio Layer 2 (Musicom), ISO/IEC 23 = MPEG 2 Audio Layer 3, ISO/IEC 24 = Portable Document File [.PDF] Adobe 25 = News Industry Text Format (NITF) 26 = Tape Archive [.TAR] 27 = Tidningarnas Telegrambyra NITF version (TTNITF DTD) 28 = Ritzaus Bureau NITF version (RBNITF DTD) 29 = Corel Draw [.CDR]
> 201 | ObjectPreviewFileVersion | int16u |
> 202 | ObjectPreviewData | string[0,256000] |
> 221 | Prefs | string[0,64] | (PhotoMechanic preferences)
> 225 | ClassifyState | string[0,64] |
> 228 | SimilarityIndex | string[0,32] |
> 230 | DocumentNotes | string[0,1024] |
> 231 | DocumentHistory | string[0,256] |
> 232 | ExifCameraInfo | string[0,4096] |
> 255 | CatalogSets | string[0,256]+ | (written by iView MediaPro)

## IPTC NewsPhoto Tags

> Tag ID | Tag Name | Writable | Values / Notes
> --- | --- | --- | ---
> 0 | NewsPhotoVersion | int16u: |
> 10 | IPTCPictureNumber | string[16] | (4 numbers: 1-Manufacturer ID, 2-Equipment ID, 3-Date, 4-Sequence)
> 20 | IPTCImageWidth | int16u |
> 30 | IPTCImageHeight | int16u |
> 40 | IPTCPixelWidth | int16u |
> 50 | IPTCPixelHeight | int16u |
> 55 | SupplementalType | int8u | 0 = Main Image 1 = Reduced Resolution Image 2 = Logo 3 = Rasterized Caption
> 60 | ColorRepresentation | int16u | 0x0 = No Image, Single Frame 0x100 = Monochrome, Single Frame 0x300 = 3 Components, Single Frame 0x301 = 3 Components, Frame Sequential in Multiple Objects 0x302 = 3 Components, Frame Sequential in One Object 0x303 = 3 Components, Line Sequential 0x304 = 3 Components, Pixel Sequential 0x305 = 3 Components, Special Interleaving 0x400 = 4 Components, Single Frame 0x401 = 4 Components, Frame Sequential in Multiple Objects 0x402 = 4 Components, Frame Sequential in One Object 0x403 = 4 Components, Line Sequential 0x404 = 4 Components, Pixel Sequential 0x405 = 4 Components, Special Interleaving
> 64 | InterchangeColorSpace | int8u | 1 = X,Y,Z CIE 2 = RGB SMPTE 3 = Y,U,V (K) (D65) 4 = RGB Device Dependent 5 = CMY (K) Device Dependent 6 = Lab (K) CIE 7 = YCbCr 8 = sRGB
> 65 | ColorSequence | int8u |
> 66 | ICC_Profile | N |
> 70 | ColorCalibrationMatrix | N |
> 80 | LookupTable | N |
> 84 | NumIndexEntries | int16u |
> 85 | ColorPalette | N |
> 86 | IPTCBitsPerSample | int8u |
> 90 | SampleStructure | int8u | 0 = OrthogonalConstangSampling 1 = Orthogonal4-2-2Sampling 2 = CompressionDependent
> 100 | ScanningDirection | int8u | 0 = L-R, Top-Bottom 1 = R-L, Top-Bottom 2 = L-R, Bottom-Top 3 = R-L, Bottom-Top 4 = Top-Bottom, L-R 5 = Bottom-Top, L-R 6 = Top-Bottom, R-L 7 = Bottom-Top, R-L
> 102 | IPTCImageRotation | int8u | 0 = 0 1 = 90 2 = 180 3 = 270
> 110 | DataCompressionMethod | int32u |
> 120 | QuantizationMethod | int8u | 0 = Linear Reflectance/Transmittance 1 = Linear Density 2 = IPTC Ref B 3 = Linear Dot Percent 4 = AP Domestic Analogue 5 = Compression Method Specific 6 = Color Space Specific 7 = Gamma Compensated
> 125 | EndPoints | N |
> 130 | ExcursionTolerance | int8u | 0 = Not Allowed 1 = Allowed
> 135 | BitsPerComponent | int8u |
> 140 | MaximumDensityRange | int16u |
> 145 | GammaCompensatedValue | int16u |

## IPTC PreObjectData Tags

> Tag ID | Tag Name | Writable | Values / Notes
> --- | --- | --- | ---
> 10 | SizeMode | N | 0 = Size Not Known 1 = Size Known
> 20 | MaxSubfileSize | N |
> 90 | ObjectSizeAnnounced | N |
> 95 | MaximumObjectSize | N |

## IPTC ObjectData Tags

> Tag ID | Tag Name | Writable | Values / Notes
> --- | --- | --- | ---
> 10 | SubFile | N+ |

## IPTC PostObjectData Tags

> Tag ID | Tag Name | Writable | Values / Notes
> --- | --- | --- | ---
> 10 | ConfirmedObjectSize | N |

(This document generated automatically by Image::ExifTool::BuildTagLookup)
Last revised Jun 8, 2010

<-- ExifTool Tag Names