Fixed

• Do not URL-encode = and , characters when rewriting document URIs, fixing YouTube JS player breakage (#316)
• Fix sources of memory leaks in JS and CSS rewriting (#322)

Changed

• Upgrade Python and Javascript dependencies (especially wombat 3.10.6) (#319, #328)
• Backport wabac changes up to wabac.js 2.26.6 (#330)
• Migrate javascript/ from Yarn Classic to Yarn Berry (#320)
• Test bogus Content-Length HTTP header behavior (#318)

Added

• Add support for custom number of retries and user-agent in save_large_file (#278)
• Enhance save_large_file log level (#279)
• Extend image optimization to support in-memory streams(BytesIO/bytes) and dst_format param (#289)
• Automatically add _ftindex:<yes/no> tag at creator start based on indexing configuration (#295)
  • BEHAVIOR CHANGE: it is not possible anymore to add "Tags" metadata with Creator.add_metadata method after creator has started ; this is anyway not recommended anymore since 5.x (one should prefer Creator.config_metadata)

Fixed

• Add proper typing @overload to zimscraperlib.image.optimize_xxx methods (#273)
• Backport wabac.JS change around rewriting: detect when JS is in 'strict' mode and avoid using 'arguments' (#286)
• Fix installation from source, which missed wombatSetup.js (#287)
• Fix outdated system dependencies in README: remove Pillow build-time deps (bundled in wheels), add missing libcairo across all platforms (#152)
• Improve contribution setup instructions: use hatch shell, clarify commands must be run from local clone root (#153)
• Bring coverage back to 100% (#293)
• Fix Creator.config_indexing docstring to reflect that only the full-text index is toggled; title indexing is always performed by libzim (#294)
• Fix format_for to not modify input BytesIO position (#296)

### Changed

• Upgrade to wombat 3.10.5 (#306)
• Adopt openzim/_python-bootstrap 2.0.0 (#303)
• Upgrade Python dependencies, Node.JS runtime and Node.JS dependencies (#306)

Changed

• Upgrade to support only Python 3.14 (#266)
• Upgrade dependencies (#269)

Added

• Add utility to fetch and prepare ZIM illustration (#254)
• New zim.dedup.Deduplicator class to handle automatic deduplication of content before adding to the ZIM (#33)

Changed

• Upgrade dependencies, especially wombat 3.9.1 (#262, #263)
• Backport changes in wabac.js around JS rewriting rules (#259, #265)

Fixed

• JS rewriting abusively rewrite import function (#255)
• Test about badly escaped src in HTML is failing (#264)

Changed

• Upgrade to wombat 3.8.8 and other Python/JS dependencies (#249)
• Force stereo videos to solve issue with 5.1 sound videos (#250)

Changed

• Upgrade to support only Python 3.13 (#203)

This is a major release with a lot of breaking changes but most changes are easy to fix.

In addition to item below, see content of Release Candidates for changes since 4.x.

Changed

• Add support for urllib3 2.3.x #243

Changed

• Mark library as typed and fix sdist content (#241)

Changed

• Upgrade wombat to 3.8.7 (#239)

Fixed

• Fix wombatSetup.js location in wheel (#236)