Sigil is a free, open-source eBook and ePUB editor for Windows, Linux, and macOS

Sigil is an outstanding EPUB editor and creator for book authors, publishers, and anyone who writes and self-publish books.

Furthermore, it is a totally, free, open-source solution that works on all popular desktop operating systems.

Sigil is written with C++ programming language, and uses Qt and QtWebEngine. It provides a full support to create, edit, and render books in ePub2, and ePub3 formats.

Sigil is a modular solution, as developers can build their own custom plugins and extends it is functionality

Features

  • Free and open source software under GPLv3
  • Multi-platform: runs on Windows, Mac, and Linux
  • Full UTF-16 support
  • EPUB 2 and EPUB 3 spec support
  • Multiple Views: Code View and Preview View
  • Complete control over directly editing EPUB syntax in Code View
  • Table of Contents generator with multi-level heading support
  • Sigil supports dark mode for easy writing
  • Comes with reports option
  • It includes a built-in validator for EPUB, CSS< and XHTML
  • Easy to detect changes
  • Metadata editor
  • User interface translated into many languages
  • Themeable icons
  • 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
  • All imported files can have their formatting mended, and your code can be optionally “prettified”
  • Plugin Support
  • Checkpoint support (compare “snapshots” of changes)
  • A built-in HTML inspector
  • Easy to customize your book layout

Download Sigil EPUB Editor

You can download Sigil for free for Windows, macOS, and Linux from its official GitHub repo.

License

Sigil is an open-source software that is released under the GPL-3.0 License.

Resources