PDF 1.7 (ISO 32000-1:2008) introduced interactive 3D support using the U3D file format. PDF 2.0 (ISO 32000-2) expanded 3D support to include the ISO PRC format, and an ISO extension to PDF 2.0 will soon be published supporting STEP (AP242) 3D models. Refer to ISO 32000 for details on how to correctly embed 3D data models in PDF files.
The PDF Association's 3D PDF Technical Working Group provides a forum for members to focus on specifications and guidance for implementing 3D PDF technology.
ISO 14739-1:2014 Document management — 3D use of Product Representation Compact (PRC) format — Part 1: PRC 10001 describes a product representation compact (PRC) file format for three dimensional (3D) content data. This format is designed to be included in PDF (ISO 32000) and other similar document formats for the purpose of 3D visualization and exchange. It can be used for creating, viewing, and distributing 3D data in document exchange workflows. It is optimized to store, load, and display various kinds of 3D data, especially that coming from computer-aided design (CAD) systems.
ISO TC 171 SC 2 WG 7 is currently working on revising PRC to correct some identified errors.
The officially registered IANA Media type for PRC is model/prc.
The U3D file format is defined by ECMA-363 and was originally introduced as part of PDF 1.7 (ISO 32000-1:2008).
The officially registered IANA Media type for U3D is model/u3d.
ISO TC 171 SC 2 WG 7 is currently developing a PDF 2.0 extension (ISO 24064) which defines how to use STEP (AP242) with PDF 2.0. STEP is developed and maintained by a different ISO technical committee (TC 184) than the ISO technical committee responsible for PDF (TC 171). Like other ISO standards, STEP is copyrighted by ISO and is not freely available. However, the 10303 EXPRESS schemas are freely available, as are the recommended practices for implementers.
The officially registered IANA Media types for STEP are model/step, model/step+xml, model/step+zip, and model/step-xml+zip.
PDF 1.7 introduced interactive 3D support using the U3D file format. PDF 2.0 expanded 3D support to include the ISO PRC format, and an ISO extension will soon be published supporting STEP (AP242) 3D models.
Communities: 3D PDF TWG, 3D PDF User LWG
ISO Group Responsible: ISO TC171 SC2 WG7
ISO Status: status of all PDF-related ISO work