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Resources referenced from script element are exempt

spec: EPUB 3.4Impacting the support of EPUB 3.4Impacting the support of EPUB 3.4

Status: Open.

#1654 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

Allow pageBreakSource as an unprefixed meta property

spec: EPUB 3.4Impacting the support of EPUB 3.4Impacting the support of EPUB 3.4

Status: Open.

#1653 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

Reflowable documents cannot be designated in spreads

spec: EPUB 3.4Impacting the support of EPUB 3.4Impacting the support of EPUB 3.4

Status: Open.

#1652 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

Roll layouts

spec: EPUB 3.4Impacting the support of EPUB 3.4Impacting the support of EPUB 3.4

Status: Open.

#1651 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

Outdated features

spec: EPUB 3.4Impacting the support of EPUB 3.4Impacting the support of EPUB 3.4

Status: Open.

#1650 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

Newly deprecated features in epub 3.4

spec: EPUB 3.4Impacting the support of EPUB 3.4Impacting the support of EPUB 3.4

Status: Open.

#1649 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

Docker build fails due to missing openjdk image

Status: Open.

#1644 In w3c/epubcheck;

· unknown321 opened on Nov 8, 2025

Command for downloading and extracting of EPUBCheck does not work when used verbatim

status: acceptedReady to be further processedReady to be further processed

type: docsThe issue is related to documentationThe issue is related to documentation

Status: Open.

#1643 In w3c/epubcheck;

· martinpub opened on Oct 28, 2025

Adding AVIF to EPUB 3.4

spec: EPUB 3.4Impacting the support of EPUB 3.4Impacting the support of EPUB 3.4

status: ready for implemThe issue is ready to be implementedThe issue is ready to be implemented

type: specThe issue is related to a Specification updateThe issue is related to a Specification update

Status: Open.

#1642 In w3c/epubcheck;

· iherman opened on Oct 6, 2025

·  

EPUB 3.4

A png when passed thorugh the epubcheck, gets mistaken for JPEG, even tho the magic bytes are correct (when using xxd or hexdump)

status: acceptedReady to be further processedReady to be further processed

type: false-positiveThis issue is about valid content being incorrectly rejectedThis issue is about valid content being incorrectly rejected

Status: Open.

#1641 In w3c/epubcheck;

· Mathusan opened on Oct 2, 2025

·  

Next maintenance release

Context menu item request

priority: lowTo be processed when time allowsTo be processed when time allows

status: in discussionThe issue is being discussed by the development teamThe issue is being discussed by the development team

type: featureThe issue describes a new feature requestThe issue describes a new feature request

Status: Open.

#1639 In w3c/epubcheck;

· GeorgeKerscher opened on Sep 11, 2025

URL normalization of OCF resources

status: in discussionThe issue is being discussed by the development teamThe issue is being discussed by the development team

type: specThe issue is related to a Specification updateThe issue is related to a Specification update

Status: Open.

#1638 In w3c/epubcheck;

· rdeltour opened on Sep 9, 2025