Open Packaging Conventions
| Abbreviation | OPC |
|---|---|
| Native name | Office Open XML File Formats - Open Packaging
Conventions |
| Status | Published |
| First published | December 7, 2006 |
| Latest version | ISO/IEC 29500-2:2021 August 2021 |
| Organization | Microsoft, Ecma, ISO/IEC |
| Base standards | ECMA-376, ISO/IEC 29500-2 |
| Related standards | XML, ZIP |
| Domain | Electronic documents |
| Website | ECMA-376, ISO/IEC 29500-2:2021 |
The Open Packaging Conventions (OPC) is a container-file technology initially created by Microsoft to store a combination of XML and non-XML files that together form a single entity such as an Open XML Paper Specification (OpenXPS) document. OPC-based file formats combine the advantages of leaving the independent file entities embedded in the document intact and resulting in much smaller files compared to normal use of XML.