
IPTC Core & Extension = the IPTC Photo Metadata standard
IPTC Core and IPTC Extension are two metadata schemas developed by the IPTC for professional use with a focus on news and stock photos.
The technical implementation of the metadata is employing Adobe's XMP technology.
Both standards are published together as IPTC Photo Metadata Standards. Its latest version includes the IPTC Core 1.1 and the IPTC Extension 1.1 specifications.
IPTC Core
- the "IPTC Core" Schema for XMP is made for a smooth and straightforward transfer of metadata values from the IIM-based IPTC fields to the XMP framework
- a specification on how to synchronise legacy IPTC field values with the new "IPTC Core" - back and forth.
- "custom panels" for Adobe Photoshop to provide a simple user interface to all "IPTC Core" metadata
- supplementary documentation for users and implementers.
Version 1.1 specifications
IPTC Core 1.1 was approved in July 2008 and its specification is published as part of the IPTC Photo Metadata Standards spec document.
An Errata Page provides a list of errata found in the spec document after its release.
The supplemental documents like the User Guidelines and custom panels for CS3 are currently updated to version 1.1 and will be released later.
Version 1.0 specifications
The "IPTC Core" version 1.0 specification was approved by the IPTC in 2004 and the specification document and additional supporting material is available:
- IPTC Core 1.0 specification document
- "custom panels" of IPTC Core metadata for Adobe Photoshop CS
- a comprehensive user guide to these panels
(Video tutorials on their use provided by David Riecks and the Stock Artists Alliance) - example photos with IPTC Core metadata
- a guideline for XMP software implementers
- translations of all the language that may (or should) appear on the user interface with IPTC Core fields into:
Spanish, French, German and Japanese
(In particular the field label, the definition of the semantics of the field and notes to the field are translated)
This material can be downloaded as either a full package or a "Photoshop CS panels only"
A severe problem was found with Photoshop 7.1 and CS 1 (aka V 8): Data input to one of the IPTC Core fields in the built-in Description or Origin panel are not saved to the XMP Packet. Please DOWNLOAD this package to fix the problem. - be aware it does not apply to Photoshop CS 2 or CS 3.
IPTC Extension
The IPTC Extension Schema for XMP is a supplemental schema to the IPTC Core. It provides:
- fields to provide additional information about the content of the image, e.g. name or locatation shown in the image, an organisation or event featured by the image, ... and more
- fields to improve administration, like e.g. for a globally unique identifier
- fields for cultural heritage photos, including a title, a creator, a creation date and information about the source
- fields to precisely define the licensing and the copyrights of a photograph.
Version 1.1 specifications
IPTC Extension 1.1 was approved in June 2009 and its specification is published as part of the IPTC Photo Metadata Standards specification document.
An Errata Page provides a list of errata found in the spec document after its release.
Supplemental documentation like User Guidelines, Implementation Guidelines and custom panels for CS5, CS4 and CS3 are currently developed and will be released in 2010.
For both standards
XMP technology
Adobe's Extensible Metadata Platform (XMP) is a technology that allows you to embed metadata into the file itself. With XMP, desktop applications and back-end publishing systems gain a common method for capturing, sharing, and leveraging this valuable metadata.
Software created by Adobe but also many more software vendors is enabled to process XMP metadata as XMP is built on a set of public specifications. You may download them from Adobe's XMP pages: www.adobe.com/products/xmp/
Note: XMP is Adobe's sole intellectual property and not IPTC's.
CORE + EXT IN A NUTSHELL
Specifications
* For both Core and Extension: Photo Metadata StandardsCompatible software
The IPTC maintains a list of software which claims to be compatible with IPTC photo metadata standardsSupport + discussion
The IPTC moderates two discussion forums on photo metadata:* Generic issues
* XMP specific issues