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EPUBCheck change log

5.1.0 (2023-07-07)

This is the latest production-ready release of EPUBCheck. It can be used to check conformance to the EPUB 3.3 specification.

This release was made by the DAISY Consortium for W3C. Many thanks to everyone who contributed and reported issues!

This EPUBCheck version is also available in the Maven Central Repository as org.w3c:epubcheck:5.1.0.

Features

  • update to latest schemas from the Nu HTML Checker (2f6a2c7)
  • warn about doc-endnote or doc-biblioentry on list items (5c39157)

Bug Fixes

  • dc:source element caused a NullPointerException (c15e4ea), closes #1514
  • allow flow content for ins and del XHTML 1.1 elements (EPUB 2.0.1) (d916df0), closes #1522
  • incorrect ID refs in toc nav caused a NullPointerException (f7b5dd9), closes #1516
  • make CLI return 0 for --version or --help options (49aacb2), closes #1520
  • properly set font fields in the JSON report (8575a6b), closes #1519
  • properly set the referencedItems field in the JSON report (7804c78)
  • properly set the rendition fields in the JSON report (da643e4)
  • remove undefined isHTML5 field from the JSON report (00b1d20)
  • remove undefined navigationOrder field from the JSON report (39234a6)
  • remove undefined script-related fields from the JSON report (1931d73)
  • updated list of allowed values for the OPF 2.0.1 role attribute (0573214), closes #1521

5.0.1 (2023-04-30)

Features

  • allow "pageBreakSource" package metadata (incubation) (2332d53), closes #1491
  • allow epub:type on SVG renderable elements (6cd9789), closes #1497

Bug Fixes

  • allow ARIA headings in EDUPUB (legacy profile) (da4f541), closes #1483
  • allow decimal viewport dimensions in fixed-layout (fc5e360), closes #1481
  • allow nav items containing multiple images (3c8dab3), closes #1476
  • allow remote URLs in HTML "cite" attributes (1b425fd), closes #1495
  • allow the 'cover-image' property on WebP images (199da0b), closes #1484
  • bad message parameter formatting in CSS-004 and RSC-028 (0f0cece), closes #1480
  • do not check fragment identifiers on PDF references (b81a77d), closes #1482
  • items were listed twice and/or with null values in the JSON report (b2c5d8c), closes #1475 #1490
  • normalize URLs before checking if the resources exist (0323668), closes #1479
  • support UNC paths (fix URL/File conversions) (6e5b791), closes #1485

5.0.0 (2023-01-11)

Features

  • "xmp" is no longer a valid package link property (6a3d2a6), closes #1457
  • add a dockerfile and readme documentation (d0ed6a4)
  • check "data-*" attributes name restrictions (22f5994), closes #1107
  • check stylesheets declared in SVG (003234a), closes #1450
  • check that non-linear content is reachable (f20993e), closes #1451
  • check that the manifest is not self-referencing (2c76420), closes #1453
  • disallow epub:type on head and metadata content (bfb7239), closes #1444 #1445
  • disallow data URLs in the package document (0175818), closes #1446
  • report as a usage when no reference were found to manifest items (09244a4), closes #1452
  • report as usage container resources not listed in manifest (f81b423)
  • report package link to package document elements (dd00b88)
  • update Saxon library to v11.4 (ef2697e), closes #1341
  • update viewport meta element requirements (9f75a1d), closes #1401 #1449
  • use "audio/ogg; codecs=opus" as the MIME type for OPUS audio (0759a82), closes #1473

Bug Fixes

  • allow links to resources embedded in content documents (54b5f1f), closes #1454
  • allow unknown alternate style sheet class names (f59743a), closes #989
  • report HTML discouraged constructs as "usage" (c8e9f45), closes #1387

5.0.0-beta-3 (2022-11-28)

Features

  • allow 1s tolerance for media overlays duration sum check (e64c7c5), closes #1328
  • allow NCX documents to declare a doctype (f3e5f67), closes #1329
  • better check media overlays styling properties (6a58b8e)
  • better parse URL fragment micro syntaxes (bec390e)
  • check epub:type restrictions in XHTML and SVG (0fab5c8), closes #1348
  • check file name uniqueness wiht Unicode canonical case fold normalization (111e772), closes #1246
  • check fragment requirements on overlays links to text content (2091d14), closes #1248 #1301
  • check that container-relative URLs have no query (a4fed67)
  • check that overlays audio file URLs have no fragments (fdabe66), closes #1251
  • check the formal viewport meta tag syntax (01a7758), closes #1214 #1347
  • extend proper URL checking to more places (like CSS) (a3c736d)
  • improve checking of data URLs (cbc0b2a), closes #1238 #1239
  • improve checking of OCF file name characters (b6ac8ea), closes #1240 #1292 #1302
  • improve detection of non-UTF-8 file names (5248914), closes #1236
  • improve fallback detection check (545b7f7), closes #1304 #1298
  • new requirements of package link 'media-type' attribute (3199b81), closes #1307
  • no longer check collection role (8eb8492), closes #1350
  • remove checks related to deprecated bindings feature (7ca1edf)
  • report 'file' URLs as errors (0f6b509), closes #1270
  • report empty URL as a schema error instead of HTM-008 (e3d3afe)
  • restrict SVG title element to HTML elements (8631b7d), closes #1342
  • update checking of the package rendering vocabulary (3086258), closes #1327
  • update the reporting of file encoding issues (0d6f927), closes #1245
  • warn about non-HTTPS remote resource references (7eb5ff2), closes #1337

Bug Fixes

  • consider HTML form elements as scripted content (1bae7f7), closes #1282
  • declaring prefixes for default vocabs is an error (035effa), closes #1306
  • fix CVE-2021-23792 vulnerability from imageio-jpeg (50b847f), closes #1336
  • improve checking of missing SVG link labels, now USAGE (5903626), closes #1353
  • OPF-018 was incorrectly reported with inline CSS (c3d767c), closes #1335
  • regression that lost line and column numbers in messages (20b5142)
  • remove recursion in reading order checks (6cbbefa), closes #1358 #1356
  • report fatal XML parsing errors only once as RSC-016 (62d67e7)
  • support CSS logical combination pseudo-classes (5635807), closes #1289 #1354

5.0.0-beta-2 (2022-07-08)

Features

  • proper handling of URL parsing throughout all checks, based on the URL standard (using the Galimatias library)
  • reorganized tests for EPUB 3.3
  • allow SVG/MathML doctype declarations (6e44b39), closes #1192 #1114
  • allow any file extension (bdee846)
  • check discouraged HTML elements (base, rp, embed) (afb28cb), closes #1271
  • check Media Overlays total duration consistency (ee9c720), closes #1217
  • check that 'page-list' and 'landmarks' nav are flat lists (15825a5), closes #1279
  • check that publication resources are not in META-INF (61dbf53), closes #1227
  • HTML link element resources do not require fallbacks (8d77b0f), closes #1247
  • ignore Nav Doc nav elements with no epub:type (f989588), closes #1222
  • loosen restriction on where remote resources can be referenced (73fe57c), closes #1288
  • page-list nav does not have to match reading order (d0f12a9), closes #1237
  • report reserved string in XHTML custom attribute namespaces (bc86db8), closes #1190
  • restrict obfuscation to font core media types (a229edf), closes #1291
  • refactored API and internals (39888e2)
  • add new Core Media Types (ECMAScript, OPUS, WebP) (166256a), closes #1249 #1189
  • allow 'auto' value for the 'dir' attribute of Package Documents (a2e3a77), closes #1220
  • allow 'hreflang' attribute on Package Document link elements (e39a801), closes #1219
  • allow informative schema checking (reported as new RSC-024 and RSC-025) (a2516f0)
  • check that item URLs have no fragment (ec28b59), closes #1250
  • do not check conformance of SVG content (ba48aaa)
  • enable informative (USAGE) checking of SVG content conformance (b9ddf8f)
  • new check (OPF-092) for language tags well-formedness (52ebd80), closes #1221 #702
  • update checking of the Package Document 'refines' attribute (72366b4), closes #1226
  • update to latest schemas from the Nu HTML Checker (af7a5f7)
  • remove "under review" notice for toc nav ordering warning (fe08c59), closes #1194

5.0.0-beta-1 (2022-01-24)

Features

  • allow SVG/MathML doctype declarations (6e44b39), closes #1192 #1114
  • allow any file extension (bdee846)
  • check discouraged HTML elements (base, rp, embed) (afb28cb), closes #1271
  • check Media Overlays total duration consistency (ee9c720), closes #1217
  • check that 'page-list' and 'landmarks' nav are flat lists (15825a5), closes #1279
  • check that publication resources are not in META-INF (61dbf53), closes #1227
  • HTML link element resources do not require fallbacks (8d77b0f), closes #1247
  • ignore Nav Doc nav elements with no epub:type (f989588), closes #1222
  • loosen restriction on where remote resources can be referenced (73fe57c), closes #1288
  • page-list nav does not have to match reading order (d0f12a9), closes #1237
  • report reserved string in XHTML custom attribute namespaces (bc86db8), closes #1190
  • restrict obfuscation to font core media types (a229edf), closes #1291

Minor Changes

  • remove "under review" notice for toc nav ordering warning (fe08c59), closes #1194

5.0.0-alpha-1 (2021-11-15)

Runtime

Features

  • refactored API and internals (39888e2)
  • add new Core Media Types (ECMAScript, OPUS, WebP) (166256a), closes #1249 #1189
  • allow 'auto' value for the 'dir' attribute of Package Documents (a2e3a77), closes #1220
  • allow 'hreflang' attribute on Package Document link elements (e39a801), closes #1219
  • allow informative schema checking (reported as new RSC-024 and RSC-025) (a2516f0)
  • check that item URLs have no fragment (ec28b59), closes #1250
  • do not check conformance of SVG content (ba48aaa)
  • enable informative (USAGE) checking of SVG content conformance (b9ddf8f)
  • new check (OPF-092) for language tags well-formedness (52ebd80), closes #1221 #702
  • update checking of the Package Document 'refines' attribute (72366b4), closes #1226
  • update to latest schemas from the Nu HTML Checker (af7a5f7)

BREAKING CHANGES

  • the required Java runtime environment is now Java 8 or greater

4.2.6 (2021-06-30)

Features

  • allow multiple roles for creator, contributor, and publisher (#1258) (6c68c61), closes #1230
  • do not report Media Overlays ordering mismatch (1cd7d77)

4.2.5 (2021-03-15)

Features

  • check playback properties do not have 'refines' attribute (05a6a20)
  • check reading order of Media Overlays text elements (e35bd05)
  • check references between Media Overlays and Content documents (f49aa84)
  • check remote resource usage in Media Overlays (df16ede)
  • check required cardinality of meta properties (edcd253), closes #1121
  • check that Media Overlays are only defined for XHTML and SVG content documents (5ae1aa9)
  • check the epub:textref attribute on Media Overlays body and seq elements (eea1574)
  • improve checking of audio clip times in Media Overlays (11b652e)
  • report unknown 'epub:type' values in overlays as USAGE only (#1171) (f8a2517)
  • update HTML schemas from the HTML Checker (56dcbd1)
  • verify 'media:duration' property use valid SMIL clock values (794b7ce), closes #1174

Bug Fixes

  • allow empty xml:lang attributes in Package Documents (177af8f), closes #777
  • allow the 'glossary' manifest item property (d1727d8), closes #1170
  • do not report fragment-only CSS URLs (6fa3312), closes #1198
  • do not require the Navigation Document to have an index in an Index Publication (33f2f99), closes #1122
  • do not treat escaped elements as hyperlinks in HTM-053 (5949b6c), closes #1182
  • remove the user directory only at the start of paths (in messages) (5ee72e7), closes #1181

4.2.4 (2020-06-23)

Bug Fixes

  • allow 'doc-dedication' role on 'aside' elements (023b783)
  • allow 'doc-glossary' role on 'section' elements (12cda43)

4.2.3 (2020-06-22)

Features

  • update HTML schemas from the HTML Checker (22fa3b1), closes #1111
  • downgrade PKG-012 (non-ASCII filenames) to USAGE (f368ee5), closes #1097 (thanks @slonopotamus!)
  • downgrade RSC-004 (cannot decrypt resource) to INFO (#1136) (e732068)
  • report empty title elements in XHTML Content Documents (#1135) (f115730), closes #1093
  • ARIA: allow doc-epigraph on 'section' and doc-cover on 'img' (84a0979)
  • update the XML ouput to the new JHOVE schema (0b346fd) (thanks @tledoux!)

Bug Fixes

  • avoid OutOfMemoryError when computing image size (929806b) (thanks @DocJM!)
  • fail gracefully when running on a non-EPUB file (#1134) (2083f05), closes #1050
  • allow 'a11y:certifierCredential' as a link (484786f), closes #1140
  • allow foreign namespaces in EPUB 2 SVGs (e3ffc37)

Other Improvements

  • improve reporting of invalid URL host parts (d2728ee), closes #1034 #1079
  • harmonize quotes usage in messages (#1132) (659ab76), closes #1071
  • add an Automatic-Module-Name entry to the jar manifest (ee06724), closes #1128 (thanks @io7m!)
  • deps upgrade commons-compress to v1.20 to remediate CVE-2019-12402 (928c26a), closes #1078
  • deps upgrade guava to v24.1.1 to remediate CVE-2018-10237 (cec01fe)

4.2.2 (2019-07-18)

Localization

  • complete translation for Traditional Chinese (+ Danish/German/Korean tweaks) (#1058) (64558be), closes #1054

Features

4.2.1 (2019-05-20)

Bug Fixes

  • allow doc-endnote on li children of ol (275fcd1), closes #1041
  • update schemas from upstream HTML Checker (4d5a24d)

4.2.0 (2019-04-23)

Bug Fixes

  • allow any role on a elem with no href (b9ed8f6), closes #1022
  • check trailing spaces in mimetype file (123c69f)
  • remove restrictions on MathML annotation-xml (8a1b650), closes #1024
  • report ZIP checks after the 'Validating…' message (73b0ee8), closes #1025

Features

  • add new 'voicing' link relationship (97e9f1c)

Localization

  • update localizedmessages for Danish, French, German, Italian, Japanese, Korean, and Spanish. (2f0d1716)

4.2.0-rc (2019-03-18)

Bug Fixes

  • allow epub:type on all HTML elements (2cafe64), closes #986
  • allow ARIA role doc-glossary on section elements (0d9462f), closes #997
  • allow images to point to SVG fragments (18afa9d), closes #987
  • ignore SVG view fragments when checking cross refs (50b29f1), closes #987
  • localize singular/plurals variants in summary (93b700f), closes #958
  • parse CSS custom properties (0036e93), closes #790
  • report all epub:type value checks as USAGE (f248483), closes #1009
  • report duplicate landmarks nav entries as ERROR (d7be97c), closes #298
  • revert FXL SVG rules to EPUB 3.0.1’s logic (ced3c15)
  • revert the deprecation of display-seq (f81d8b8), closes #990
  • script data blocks don’t need to be declared (05e5ac2)
  • support ARIA global attributes in SVG (56ebcd8), closes #846

Features

  • allow fonts to be remote resources (4d5a5a9), closes #871 #672
  • allow remote resources in scripted content (1c90ae9), closes #869
  • check duplicate IDs in the OCF encryption file (cab45e6), closes #306
  • check image sources in picture and srcset (11bf628), closes #781
  • check that toc & page-list nav are in reading order (8ba384f), closes #888
  • disallow remote links in toc/landmarks/page-list nav (dd0805f), closes #890
  • report use of non-preferred Core Media Types (ab13779), closes #873

Localization

Note: the new messages introduced in v4.2.0 are not localized yet.

4.2.0-beta (2019-02-25)

Bug Fixes

  • allow foreign namespaces in SVG content documents (ca29c89), closes #491
  • do not restrict ID refs to non-colon names (365e6e6), closes #783
  • improve RelaxNG datatypes of date/time/duration attributes (ef5b94c), closes #775
  • parse boolean/enumerated HTML attributes as case-insensitive (5b3533a), closes #941

Features

  • add application/javascript as core media type (f4566b6), closes #874
  • add new MO-only aside epub:type value (4404fff)
  • allow the Compression element in the encryption file (ed6f1c4), closes #904
  • basic schema support for HTML custom elements (356fac0), closes #932
  • implement Structure Semantics Vocab changes for EPUB 3.2 (3454da5), closes #531 #903 #962 #963
  • improve wording of message OPF-025 (cecaa76), closes #959
  • remove epubsc from reserved prefixes (02397ec), closes #875
  • report CSS absolute/fixed positioning as USAGE (672ac6d), closes #889
  • set reported 3.x version to "3.2" (9965c19), closes #943
  • support new rules related to FXL SVG sizing (17f5eee), closes #902
  • suppress a couple irrelevant USAGE reports (b342db2)
  • update Jing (schema processor) to v20181222 (cfca41b)
  • update Package vocabularies and link element checks (99f882a), closes #883 #884 #885 #886 #887
  • update recognized font Core Media types (ac2f1bd), closes #872 #339
  • update the HTML schemas to the latest Nu HTML Checker version (8d3c77e)

4.2.0-alpha-1 (2019-01-14)

Bug Fixes

  • check MathML and XHTML content in epub:switch (976b9f6), closes #835
  • messages of missing/incorrect locale cannot be translated (91fac12)

Features

4.1.1 (2019-01-22)

Bug Fixes

  • switch item property doesn't apply to svg:switch (91b84ad), closes #857
  • better check remote resources (85b5f77), closes #852
  • better support the EPUB Accessibility Vocabulary (8a9cf63), closes #810
  • consider all video/* as video media types (27ad571)
  • do not check entity references in comment or CDATA (#949) (4307542), closes #800
  • do not report CSS 'font-size: 0' as an error (4e17714), closes #922
  • keep on processing after failing to read GIFs (2a244e7)
  • messages of missing/incorrect locale cannot be translated (91fac12)
  • resolve relative URIs against their base (d42ccd6), closes #527
  • valid JPEG files were considered 'corrupted' (c4a2cfa), closes #850
  • wrong report of duplicate landmarks in Nav Doc (#942) (e06a552), closes #926

Features

  • update localized messages for several languages (116e61b)

4.1.0 (2018-11-26)

Bug Fixes

  • silence a Saxon warning (Schematron XSLT) (5045d78b), closes #859
  • fix path resolution in EpubNCXCheck (ctc package) (f572a861)
  • handle IllegalStateException in NCX checker (25336894), closes #666
  • check that the mimetype file is uncompressed (6764e250), closes #303
  • fix wrong exit message for single file validation (68af5a9a), closes #740
  • allow ARIA role attributes in SVG (49412e05), closes #769
  • allow empty xml:lang attributes (392c2f68), closes #777
  • handle no src uri in fonts, correct embedded font boolean in the XML output (a26f9c13), closes #773
  • fix issues with landmarks checks ACC-008 (74d0bdd1), closes #457, #734
  • fix focus issue when using EPUBCheck in a GUI app (cd63a166), closes #665
  • fix incorrect warning ACC_011 (5e6a69af), closes #680
  • make the type attribute optional on SVG style elements (275f6b6a), closes #688
  • exit with error when directory is not found in expanded mode (e42d189c), closes #525
  • fix a NullPointerException when checking an empty meta rendition element in OPF (42d75297), closes #727
  • fix DefaultReportImpl to avoid duplicate path info in message locations (9321355b), closes #729
  • fix broken OPF_060 and OPF_061 message format (9f0e7d12), closes #658
  • fix broken OPF_060 and OPF_061 checks for duplicate ZIP entries (05e96f40), closes #728

Features

  • allow the configuration of EPUBCheck’s locale (9b249956), closes #650, #498
  • report invalid dc:identifier UUIDs validation (as WARNING) (48800a04), closes #853
  • change --version and -version command line options to output EPUBCheck version (e498c61d), closes #743
  • check files with extensions other than .epub (1b67e046), closes #490
  • report file:// URL as INFO (8f7a2b7d), closes #289
  • improve messages for OPF-058 and OPF-059 (5e33645e), closes #804
  • enable NCX_001 check also for EPUB 3 when an NCX file is present (9715c352)
  • report non-matching identifiers in OPF and NCX as an error again (515682dc)
  • improved css font size validation (25c0b372), closes #529
  • issue a WARNING when landmarks anchors are not unique (557308ef), closes #493
  • issue a WARNING when guide/reference elements are not unique (25f28c01), closes #493
  • partial update of OPF 2.0 RelaxNG schema to latest version (changing datatype text to anyURI for href attributes) (251aa936), closes #725
  • display error/warning count in EPUBCheck results (b7babedf), closes #655
  • add file path info in uri attributes of the XML report (c958c117), closes #540
  • update the XHTML 1.1 RelaxNG schema to latest version (4c6fb49a)
  • update the OPF20 RNG schema in sync with official schema to validate empty guide elements (6540b03d)
  • report an ERROR when @clipBegin equals @clipEnd in SMIL Media Overlays (00716768), closes #568
  • improve Nav Doc validation (d32de854), closes #763, #759
  • update the NCX RelaxNG schema to add fixed list of pageTarget type values (b2c9e939), closes #761
  • improve URL checks (a44a596b), closes #708
  • rephrase messages RSC-005, RSC-016, RSC-017 (5ef44973)
  • add JHove XSD schema declaration in XML output (e55039c9), closes #736
  • add detailed resource info in RSC-008 messages (5f5ef7b7), closes #720
  • add detailed resource info in RSC-007 messages (71a76ee4), closes #475

Maintenance

  • change the project name to 'EPUBCheck' (dfd7fd27)
  • update the minimum source code compatibility to Java 1.7 (9b249956)
  • update the Saxon dependency to v9.8 (bf10f380)
  • update the Apache commons-compress dependency to v1.18 (e7dfedd8)
  • update the Google Guava dependency to v24.0 (befd9fc3)
  • update the continuous integration build matrix, now testing from Java 7 up to Java 11 (fb84b23c)
  • various translation updates (39a9a093, 6e3a8b41)