Sigil was designed to simplify the creation of great ebooks via 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.

Sigil can be utilized to format and package your books into the perfect EPUB using an advanced set of features. Sigil is one of the most popular EPUB editors available and is totally free.

Sigil 64-bit can be used on Windows 64-bit 8 and later. The 32-bit legacy mode will be used on Windows 7 and on 8/10/11 32-bit. Both are included. Sigil is also available as an installer.

Sigil Features:

Multi-platform: runs on Windows, Linux, and Mac

Full Unicode support: everything you see in Sigil is in UTF-16

Full EPUB spec support

WYSIWYG editing

Multiple Views: Book View, Code View, and Split View

Metadata editor with full support for all possible metadata entries (more than 200) with full descriptions for each

Table Of Contents editor

Multi-level TOC support

Book View fully supports the display of any XHTML document possible under the OPS spec

SVG support

Basic XPGT support

Advanced automatic conversion of all imported documents to Unicode

Currently imports TXT, HTML and EPUB files; more will be added with time

Embedded HTML Tidy; all imported documents are thoroughly cleaned; changing views cleans the document so no matter how much you screw up your code, it will fix it (usually)

An actually usable user interface

Native C++ application