Call for Review: EPUB 3.3, EPUB Reading Systems 3.3, EPUB Accessibility 1.1 are W3C Proposed Recommendations

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The EPUB 3 Working Group has published three Proposed Recommendations today for EPUB 3.3. This technology defines a distribution and interchange format for digital publications and documents. The EPUB format provides a means of representing, packaging, and encoding structured and semantically enhanced Web content — including HTML, CSS, SVG, and other resources — for distribution in a single-file container.

The three Proposed Recommendations are:

  • The EPUB 3.3 specification defines the authoring requirements for EPUB Publications and represents the third major revision of the standard.
  • The EPUB Reading Systems 3.3 specification defines the conformance requirements for EPUB 3 Reading Systems — the user agents that render EPUB Publications.
  • The EPUB Accessibility 1.1 specifies content conformance requirements for verifying the accessibility of EPUB Publications. It also specifies accessibility metadata requirements for the discoverability of EPUB publications.

Comments are welcome through 15 May 2023.

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