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Sigil 2.8.5

EPUB ebook editor

filecart Mac Updated Nov 06, 2026
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About Sigil

EPUB ebook editor
Release info Update on Nov 05, 2026
Release notes Sigil 2.8.5 is a mixture of bugfixes and new features.

New Features
• remove outdated CSS parser and replace it with a modern spec-compliant Lexbor based css parser. See https://github.com/lexbor/lexbor. Note: Required upstream changes have been approved but are waiting to be merged until other changes requiring a major update are needed (ie size of parser and tokenizer structures needed to grow breaking the ABI). So do *NOT* replace our internal version of lexbor with a released lexbor version as it will currently not work. We will keep it internal with our own patches and statically linked to prevent dll issues until those requested changes are properly upstreamed.
• improve bulk addition speed of AddExisting/Drop Zone when replacing already existing images by directly using file write with truncation and thereby never touching the opf
• speed up Bookbrowser Refresh by bulk adding and removal items. (contributed by rinne1998)
• try to allow Sigil dock recent items on macOS platform
• allow multiple selection in the TOC Editor to speed larger changes.
• add image initial size to Sigil's Image tab.
• add ability to create your own Insert Special Characters dialog using special_characters.xml in Sigil prefs folder. Design and Code credit goes completely to BeckyEbook.
• Completely redesign AdjustImage Cropping to make it more usable. Thanks to byword77
• make Sigil meta use epub version specific tags for Epub 3.4 spec changes
• make svg cover images add href alongside xlink:href for Epub 3.4 spec changes
• make epub3 not add or use old epub2 cover metadata for Epub 3.4 spec changes
• allow epub3 Tools to control creation and removal of cover metadata to ease backwards compatibility
• add support for qt image formats plugins to support avif and jxl images
• add support for polyfilling jxl images in Preview using the URLSchemeHandler and jpeg format

Bug Fixes
• move all singleton C++ classes to use the Meyers form to fix leaks, bugs, and speed startup
• prevent…
Listing dataHomebrew Cask

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