RFC 8118 defines the application/pdf Media Type and provides an overview of PDF fragment identifiers.

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.

ISO 16684 is the ISO family of standards that defines XMP (eXtensible metadata platform) for XML-based metadata. XMP is widely used across PDF and other file formats, and is mandated by many ISO PDF subsets.

ISO 19444 specifies an XML format for representing forms data and annotations in ISO 32000-2 (PDF 2.0). It is the XML equivalent of FDF.

ISO 21757-1 defines the ECMAScript API for automating and interacting with the 2D and 3D content in PDF 2.0 documents.

PDF/R defines a small subset of ISO 32000 suitable for storage, transport and exchange of multi-page raster-image (scanned) documents.

PDF Declarations facilitate a machine-readable notification that a PDF file (and/or its contents) conform to a given 3rd party specification.

This document describes an algorithm for producing conforming HTML from a well-tagged PDF document. HTML was chosen as a derivation target because HTML is consumed on all platforms and supported by all major vendors.

This document describes PDF/raster, a strict subset of the PDF file format designed for storing, transporting and exchanging multi-page raster-image documents.

ISO 14739-1 (PRC) describes the product representation compact (PRC) file format for three dimensional (3D) content data.