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).
Publisher’s description
What is Sigil?
Sigil is an open-source e-book reader program for Windows from Sigil-Ebook. It ranks 3rd by popularity among e-book readers in this catalogue. It is written in C++. Besides Windows, it is available for Linux.
Installation and requirements
Official installers exist for 64-bit as EXE (Inno Setup). Installation asks for administrator rights. It needs Windows 10 1809 or newer. The installer supports unattended (silent) installation.
Updates and version history
The current version is 2.8.1, released on July 18, 2026. 24 versions are listed since March 11, 2022, each with links to its own installer files. That is about 5.5 releases a year.
Popularity and file types
The Chocolatey package has been downloaded 34,539 times. The source code on GitHub (Sigil-Ebook/Sigil) has 7,001 stars. On Windows it registers 1 file type, including .epub. Similar programs include calibre, SumatraPDF and BlueGriffon.
Project description on GitHub: “Sigil is a multi-platform EPUB ebook editor”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Also runs on Linux
- Large user base
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: Sigil is an open-source e-book reader tool for 64-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Key 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
- 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”
AppStream · Flathub
Is Sigil safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
9370FFD21C2C650201019AB6B8B8BC2C28E142689CB62CFE77344D82E62A03D7· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 24 versions ›24 versions over 4 years · about 5.5 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 2.8.1Latest | July 18, 2026 | — | 64-bit EXE (Inno Setup) |
| 2.8.0 | June 7, 2026 | — | 64-bit EXE (Inno Setup) |
| 2.7.6 | March 19, 2026 | — | 64-bit EXE (Inno Setup) |
| 2.7.5 | March 12, 2026 | — | 64-bit EXE (Inno Setup) |
| 2.7.0 | December 1, 2025 | — | 64-bit EXE (Inno Setup) |
| 2.6.2 | September 13, 2025 | — | 64-bit EXE (Inno Setup) |
| 2.6.0 | July 17, 2025 | — | 64-bit EXE (Inno Setup) |
| 2.5.2 | June 4, 2025 | — | 64-bit EXE (Inno Setup) |
Install from the command line
Silent install ›winget install --id Sigil-Ebook.Sigil -echoco install Sigil -yscoop install extras/sigilSigil-2.8.1-Windows-x64-Setup.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-Related guide: How to use winget: install and update apps
Also for other systems
brew install --cask sigilflatpak install flathub com.sigil_ebook.SigilInformation
- Publisher
- Sigil-Ebook
- Category
- E-book readers
- Licence
- GNU General Public License v3.0
- Price
- Free
- Source code
- github.com/Sigil-Ebook/Sigil
- Written in
- C++
- Content rating
- All ages
- Requires
- Windows 11 / 10 (Windows 10 1809+)
- Architecture
- 64-bit
- Installer
- EXE (Inno Setup)
- Other platforms
- Linux
- Version
- 2.8.1
- Released
- July 18, 2026
- Added to the catalogue
- March 19, 2022
- Versions listed
- 24
- Updates / year
- 5.5
- Chocolatey downloads
- 34,539
- GitHub stars
- 7,001
- GitHub forks
- 628
- Website
- sigil-ebook.com
- winget ID
- Sigil-Ebook.Sigil
- Chocolatey package
- Sigil
- Scoop package
- extras/sigil
File types it opens (1)
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to Sigil
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Frequently asked questions
Is Sigil free?
Yes. Sigil is open-source software under the GNU General Public License v3.0 licence.
Is Sigil safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Sigil with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can Sigil be installed silently?
Yes. The silent install page lists the exact command for each installer.
Which Windows versions does Sigil support?
The installer requires Windows 10 1809 or newer and is available for 64-bit.
Does Sigil run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of Sigil?
The versions page lists all 24 versions with links to their official installer files, back to March 11, 2022.
What are alternatives to Sigil?
calibre, SumatraPDF, BlueGriffon, Kindle Comic Converter and ausweisapp2. The alternatives page compares them.
