ANSI/NISO Z39.87 is a standard which defines a set of metadata elements for raster digital images. The purpose is to help in the development, exchange and interpretation of digital images. The dictionary functions of this standard assist in the interoperability between systems, services, and software. It is also an aid in the long-term management of and continuing access to digital image collections.

• Metadata standards
• Metadata Encoding and Transmission Standard (METS)

• NISO standard publication: ISBN 978-1-880124-67-3, ANSI Approval Date: 12/18/06

• ANSI/NISO Z39.87 - 2006, Data Dictionary - Technical Metadata for Digital Still Images
• Library of Congress