What Is EPUB 3.2 Specification


What Is EPUB 3.2 Specification?

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EPUB 3.2 Specification is the 3.2 version of EPUB specification, released on May 8, 2019.

EPUB 3.2 is considered as a successor to both EPUB 3.0.1 and EPUB 3.1. EPUB 3.1 did not receive wide adoption due to incompatibilities with previous versions, so EPUB 3.2 was developed to be strongly backward-compatible with EPUB 3.0.1, while retaining many of the changes made in EPUB 3.1

EPUB 3.2 Specification consists of 6 documents:

  • EPUB 3.2 - Provides a high level definition of EPUB 3.2 as a distribution and interchange format for digital publications and documents.
  • Packages 3.2 - Defines semantics and conformance requirements for an EPUB® Package.
  • Content Documents 3.2 - Defines profiles of HTML, SVG, and CSS for use in the context of EPUB® Publications.
  • Open Container Format (OCF) 3.2 - Defines a file format and processing model for encapsulating the set of related resources that comprise an EPUB® Publication into a single-file container, the EPUB Container.
  • Media Overlays 3.2 - Defines a usage of [SMIL] (Synchronized Multimedia Integration Language), the Package Document, CSS Style Sheets, and EPUB® Content Documents for representation of audio synchronized with the EPUB Content Document.
  • Accessibility [EPUBAccessibility] — defines accessibility conformance and discovery requirements for EPUB Publications.

For more information, see EPUB 3.2 Specification Website.


Changes on EPUB Packages 3.2

Introduction of EPUB 3.2 Specification

Introduction of EPUB 3.2 Specification

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