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Remote HLS video flagged as requiring fallback

Status: Open.

#1662 In w3c/epubcheck;

· mattgarrish opened on May 7, 2026

Add EPUB Fixer to Apps and Tools

Status: Open.

#1661 In w3c/epubcheck;

· davidshangyin974 opened on May 5, 2026

Validate text fragment locators (#:~:text=) in media overlay text src

Status: Open.

#1659 In w3c/epubcheck;

· richwaters opened on Apr 3, 2026

Latest EPUBCHECK vs Daisy ACE

Status: Open.

#1657 In w3c/epubcheck;

· LukeJanicki opened on Feb 10, 2026

Resources referenced from script element are exempt

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

status: acceptedReady to be further processedReady to be further processed

Status: Open.

#1654 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

·  

EPUB 3.4

Allow pageBreakSource as an unprefixed meta property

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

status: acceptedReady to be further processedReady to be further processed

Status: Open.

#1653 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

·  

EPUB 3.4

Reflowable documents cannot be designated in spreads

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

status: acceptedReady to be further processedReady to be further processed

Status: Open.

#1652 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

·  

EPUB 3.4

Roll layouts

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

status: acceptedReady to be further processedReady to be further processed

Status: Open.

#1651 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

·  

EPUB 3.4

Outdated features

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

status: acceptedReady to be further processedReady to be further processed

Status: Open.

#1650 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

·  

EPUB 3.4

Newly deprecated features in 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

Status: Open.

#1649 In w3c/epubcheck;

· mattgarrish opened on Jan 2, 2026

·  

EPUB 3.4

Docker build fails due to missing openjdk image

type: maintenanceThe issue is related to a meta task (build system, dependency update, etc)The issue is related to a meta task (build system, dependency update, etc)

Status: Open.

#1644 In w3c/epubcheck;

· unknown321 opened on Nov 8, 2025

·  

Next maintenance release

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