| Sigil | |
|---|---|
 | |
 | |
| Original author | Strahinja Val Marković |
| Developers | Kevin Hendricks and Doug Massay |
| Initial release | 1 August 2009; 16 years ago (2009-08-01) |
| Stable release | 2.6.2[1]  / 13 September 2025 |
| Repository | |
| Written in | C++ (Qt) |
| Operating system | Windows,macOS andLinux |
| Available in | English |
| Type | Desktop publishing software |
| License | GPL-3.0-or-later |
| Website | sigil-ebook |
Sigil isfree,open-source editing software fore-books in theEPUB format.
As across-platform application, Sigil is distributed for theWindows,macOS,Haiku andLinux platforms under theGNU GPL license. Sigil supports code-based editing of EPUB files, as well as the import ofHTML andplain text files.[2][3] A companion application,PageEdit, allowsWYSIWYG editing of EPUB files.
Sigil has been developed by Strahinja Val Marković and others since 2009. From July 2011 to June 2015 John Schember was the lead developer.[4] In June 2015, development of Sigil was taken over by Kevin Hendricks and Doug Massay.[5]
Sigil's features include:[6]
Sigil has full EPUB 2 specifications support, but only limited EPUB 3 support. Since version 0.9.3 of January 2016, the developers have been focusing on "improving Sigil’s ability to work with and generate epub3 ebooks without losing any of its epub2 capabilities".[7]
WYSIWYG editing in book view was discontinued in 2019 and moved to a separate application, PageEdit.[8]
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