Sigil is a free, open source, multi-platform ebook editor that uses Qt (and QtWebEngine). It is designed to edit books in ePub format (both ePub 2 and ePub 3).
Sigil was designed to make it easy to create great ebooks using the EPUB format. If you are formatting books for your own use, or you are a professional editor publishing books on multiple platforms, then Sigil is for you. You can use Sigil to format and package your books into an EPUB that looks exactly the way you want it to using an advanced set of features that have made Sigil one of most popular EPUB editors available.
This open-source and completely free software is written and supported entirely by volunteers. The current Sigil development team includes Doug Massay and Kevin Hendricks as co-lead developers and maintainers. Previous developers/authors include John Schember, Grant Drake and Dave Heiland. Sigil was originally created by Strahinja Markovic in 2009 and remains completely free to download and use. Support is also provided by other volunteers who contribute code, translations and helpful answers to user's questions. See the Help=>About menu in Sigil for a complete list of contributors.
Features
- Free and open source software under GPLv3
- Multi-platform: runs on Windows, Linux and Mac
- Full UTF-16 support
- Full EPUB 2 spec support
- Multiple Views: Book View, Code View and Preview View
- WYSIWYG editing in Book View
- Complete control over directly editing EPUB syntax in Code View
- Table of Contents generator with multi-level heading support
- Metadata editor with full support for all possible metadata entries (more than 200) with full descriptions for each
- User interface translated into many languages
- Spell checking with default and user configurable dictionaries
- Full Regular Expression (PCRE) support for Find & Replace
- Supports import of EPUB and HTML files, images, and style sheets,
- Documents can be validated for EPUB compliance with the integrated FlightCrew EPUB validator
- Embedded HTML Tidy: all imported files have their formatting corrected, and your editing can be optionally cleaned
What's New
Sigil version 2.1.0 represents a mix of bug fixes and new features. We strongly recommend updating to the latest release of Sigil as it includes a large number of third party security fixes.
New Features
- Assign menu accelerators P - &Plugins, and K - Chec&kpoints (thank you BeckyEbook)
- Add ability to change keyboard focus using keyboard shortcuts or menus to BookBrowser, Preview, CodeView, ClipsWindow, and TableOfContents Windows
- Preserve Media Overlay Active Classes when deleting unused classes
- Goto Link Or Style (or Ctrl-Clicking on a class will now search selectors with combinators if nothing found in normal css classes
- Update to a newer Spanish hunspell dictionary
- Overhaul of Building on Linux documentation
- Update 3rdparty zlib to version 1.3.1 for security and other bug fixes
- Update 3rdparty pcre2 to version 10.43 for security and other bug fixes
- Update to Qt 6.6.2 for security fixes, accessibility improvements
- Allow cancelling of Save if mend on save set and not well formed
- Windows users can now set the SIGIL_USE_FREETYPE_FONTENGINE environment variable to more fully support woff and woff2 fonts
Bug Fixes
- Multiple bug fixes from Qt 6.6.2 such as the transient child window resize bug on Windows, etc
- Fix QuickParser bug when parsing attribute names not properly ignoring all legal whitespace
- Make OPF parsing robust to alternative whitespace usage as well
- Fix creation of thumbnails of svg images in SelectFiles and Image Report for macOS
- Fix svg rendering in QtSvg by filtering out desc and title tags inside text tags pre-rendering
- Fix Python plugin quickparser.py to better handle svg mixed case tag names
- Better handle cancelling out of plugins prior to their completion
- Better handle Guide/Landmark title translations (thank you BeckyEbook)
- Clean up cmake and build warnings
- Fix crash on Windows when using woff/woff2 fonts
