
Overview of Sigil: A Versatile eBook Editor
Sigil is a powerful, open-source ebook editor that allows users to create and modify eBooks in ePub format, supporting both ePub 2 and ePub 3. Ideal for both novice and advanced users, Sigil provides extensive editing capabilities such as in-depth XHTML, CSS, and XPGT editing. It also makes it easy to manage metadata compliant with the EPUB specification and to develop a structured Table of Contents for your projects.
Key Features of Sigil
- Licensing: Free, open-source software released under GPLv3.
- Cross-Platform Compatibility: Available on Windows, Mac, and Linux (with limited support for Linux).
- UTF-16 Support: Full support for UTF-16 character encoding.
- EPUB Compatibility: Full compliance with EPUB 2 standards, limited support for EPUB 3.
- View Options: Offers multiple viewing modes, including Book View, Code View, and Preview View.
- WYSIWYG Editing: Intuitive editing experience with the What-You-See-Is-What-You-Get interface in Book View.
- Code Control: Direct editing of EPUB markup in Code View, ensuring complete control over formatting.
- Table of Contents Generator: Automatically creates multi-level headings in the Table of Contents.
- Metadata Management: User-friendly editor for metadata entries.
- Multi-language Interface: User interface available in various languages.
- Spell Check: Built-in spell checking feature with customizable dictionaries.
- Advanced Search: Full Regular Expression (PCRE) support for search and replace functions.
- Import Capabilities: Allows the import of EPUB and HTML files, images, and stylesheets.
- EPUB Validation: Integrated tools for validating EPUB compliance.
- File Formatting: Automatically corrects formatting for all imported files, with optional edits cleanup.
- Plugin Support: Extensible functionality through various plugins.
Recent Updates: Sigil 2.6.2 Changelog
New Features Introduced
- Enhanced internal “sigil:” scheme enabling the use of the fetch API.
- New PreviewFileDialog feature for thumbnail previews of images and text files in non-native dialog mode.
- Added an environment variable,
SIGIL_NO_CUSTOM_DIRECTORY_ICONS=1
, for improved performance in networked storage environments. - Updated BookBrowser includes a convenient “View Image” pop-up menu item for quick image previews.
- Code View now recognizes file media types to streamline editing options.
- Introduced support for
env-vars.txt
in the Sigil Preferences folder, allowing for easy environment variable management. - Revamped AppImage CI builds utilizing Docker images for improved performance.
Bug Fixes
- Resolved issues with the Qt WebEngine bug when used in QDialog for Checkpoints.
- Corrected a typo in MediaTypes that affected functionality.
- Fixed the Checkpoints Diff routine for better handling of non-existing images.
- Addressed a parsing bug in
sanitycheck.py
related to spurious closing tags. - Made corrections in the Aria Clips functionality regarding book language settings.
- Updated Qt requirement documentation to indicate that Mac OS 12 is now the minimum supported version for Qt 6.8. X.
- Standardized naming for environment variables to enhance consistency across the platform.
- Fixed issues with handling of epub filenames in input plugins.
Download Sigil 2.6.2
You can download the latest version of Sigil from the following link: Sigil 2.6.2 (Size: 127.0 MB, Open Source).
Additional Resources
For more information, visit the Sigil Home Page or explore download options for other operating systems. To view a screenshot, simply click on the link.

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