Sigil (application)

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Original author(s) Strahinja Marković
Developer(s) John Schember
Initial release 2009; 5 years ago (2009)
Discontinued 0.7.4 / 27 October 2013; 8 months ago (2013-10-27)[1]
Development status Discontinued
Written in C++ (Qt)
Operating system Microsoft Windows, Mac OS X and Linux
Available in English
Type Desktop publishing software
License GNU GPLv3

Sigil is an open-source editor for EPUB e-books developed by Strahinja Marković in 2009 and maintained by John Schember from 2011 to 2014.[2] Development ceased in 2014 and Schember recommended calibre as an alternative.[3]

As a cross-platform application, Sigil is distributed for the Microsoft Windows, Mac OS X and Linux platforms under the GNU GPL license. Sigil supports both WYSIWYG and code-based editing of EPUB files, as well as the import of HTML and plain text files.[4][5]


Sigil's features include:[6]

  • Full UTF-16 and EPUB 2 specification support
  • Multiple views: book, code and preview view
  • WYSIWYG editing in book view
  • Table of contents generator with multi-level heading support
  • Metadata editor with full support for all metadata entries
  • Spell checking with default and user configurable dictionaries
  • Full regular expression (PCRE) support for find and replace
  • Supports import of EPUB and HTML files, images, and style sheets,
  • FlightCrew EPUB integration for EPUB compliance validator
  • Integrated API to external HTML and graphics editors


  1. ^ Schember, John (2013-10-27). "Sigil 0.7.4 Released". Retrieved 2013-10-27. 
  2. ^ Schember, John (25 July 2011). "Taking over Sigil". Sigil development blog. Retrieved 8 August 2011. 
  3. ^ Schember, John (9 Feb 2014). "Sigil's spiritual successor". Sigil development blog. Retrieved 5 July 2014. 
  4. ^ Benthin, Falko (4 August 2009). "Freier epub-Editor Sigil erschienen". Retrieved 19 November 2010. 
  5. ^ Diedrich, Oliver. "Der kleine E-Autor: E-Books im Epub-Format selbst erstellen". c't 25/2009. p. 146. Retrieved 19 November 2010. 
  6. ^ Chris von Eitzen (2012-10-31), Sigil EPUB ebook editor 0.6.0 released, The H, archived from the original on 4 April 2013, retrieved 2012-11-03 

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