n. (abbr. MIX)an XML-based standard for encoding technical metadata about digital imagesDappert and Enders 2010, 12But, in partnership with NISO, the Library of Congress maintains an XML Schema called MIX (Metadata for Images in XML Schema) that is widely used by content creators and in the digital preservation community. Tools, such as JHOVE, are available to extract technical metadata from image files and export the metadata as MIX serialization.Lavoie and Gartner 2013, 32MIX (Metadata for Images in XML Schema) ¶ An XML schema for technical metadata for still images[.]MIX 2022The schema provides a format for interchange and/or storage of the data specified in the Data Dictionary - Technical Metadata for Digital Still Images (ANSI/NISO Z39.87-2006). This schema is currently referred to as “NISO Metadata for Images in XML (NISO MIX)”. MIX is expressed using the XML schema language of the World Wide Web Consortium.
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As of 2025, the de facto standard is maintained for the National Information Standards Organization (NISO) by the Library of Congress.
