stands for International Press Telecommunications Council and is a consortium of news agencies and suppliers to the press industry. In 1979, the IPTC developed a metadata standard that defines a common set of fields used to describe images such as caption, copyright owner and keywords. Adobe developed a specification known as "IPTC header" for embedding IPTC fields directly into image files. The benefit of this approach is that information about the asset is theoretically never lost and follows the image even if it is copied. In practice, the IPTC headers can be overwritten or replaced with extensions developed by other vendors that are incompatible with the original list. A new standard XMP or Extensible Metadata Platform has been developed jointly between Adobe and IPTC that uses XML and allows extensions to the fields instead. XMP is now becoming the predominant metadata standard for images.
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