Sigil 2.4, an open-source EPUB e-book editor, has released new features and bug fixes.

Sigil is a free open-source cross-platform e-book editing software built with Qt 6 and QtWebEngine. It aims to edit books in EPUB format, supporting both EPUB 2 and EPUB 3. Today, Sigil has been updated to version 2.4.

Version 2.4 of Sigil includes new features such as a GetInfo dialog that runs without the need to execute reports and provides specific information collections in XHTML files, right-click menu options, and word count. It also supports multiple semantics within a single XHTML file. This is technically compliant with the specifications. In this release, Sigil Well-Formed (validity check) has improved error recognition for missing attribute quotation marks, and the Replace Selection dialog now determines whether to replace using checkboxes. This allows replacements without deletion operations. Additionally, in version 2.4 of Sigil, support has been added to build applications from source on Linux and Windows systems using a virtual Python environment, making debugging easier in VS IDE. Updates were also made to build documentation for source builds on Linux systems and optimized the Sigil logo and installer for Windows systems. Qt was updated to version 6.7.3. In this release, readability of Load Warnings has been improved, handling of whitespace characters in TagLister codebase, and improvements have been made to prevent build warnings when using QTimeZone if possible. The build has also been improved to prevent the acceptance of the QT_IMPLICIT_QCHAR_CONSTRUCTION macro in the latest Qt version. Finally, in version 2.4 of Sigil, XHTML metadata character information is removed during UTF-8 conversion to prevent encoding errors. Keyboard shortcut assignments can be made from Preferences and buttons are removed from the tab focus chain. For more details on changes included in this version, please refer to the release notes on the project's GitHub page. There you can download the binary for Sigil 2.4 for macOS and Windows systems, as well as source tarballs. Source tarballs are also provided if you want to compile Sigil on GNU/Linux distributions. Most Linux users can install Sigil from their distribution's stable software repositories or install it as a Flatpak application from Flathub.