IPTC-IIM

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File Format
Name IPTC-IIM
Ontology

IPTC is a metadata format used in some types of image files.

Contents

Format

Structurally, IPTC is a sequence of data blocks, which the specification calls "DataSets". Each DataSet contains a 1-byte "record number" and a 1-byte "DataSet number", which together indicate the type of data stored in that DataSet.

Take note of DataSet {1, 90} (Coded Character Set), which indicates the character encoding used in other DataSets.

Multi-byte integers use big-endian byte order.

Embedding

In a TIFF file, IPTC uses tag 33723.

IPTC may be embedded in Photoshop Image Resources metadata, with Resource ID 0x0404.

JPEG files often contain IPTC embedded in Photoshop Image Resources.

Specifications

References

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