Windows Legacy download
Windows x86 download
Windows x64 download
MacOS download

This release represents a mix of bug fixes and new features:

Bug Fixes

  • double width of new Find Replace icons to make them easier to access
  • improve new Find Replace icon tooltips to be include short name on top
  • fix bug that caused file rename changes to fail when updating smil
  • Metadata Editor will now strip out unneeded xmlns:dc attributes on dc tags
  • Metadata Editor is now more robust to language codes that have incorrect case in the metadata
  • clarify Create HTML ToC menu entry works from existing ToC
  • prevent indavertent “" chars be treated like escapes when updating metadata
  • fix MetaEditor nit of not auto adding “aut” role to Author metadata for epub2
  • make Spellcheck Editor count align column numerically (right)

New Features

  • add ability for a user-template.xhtml and user-template.css be read from Sigil Prefs to create new empty xhtml and css files
  • updated to very latest MathJax version 3.2.2 for mathml support in Preview
  • add ability to cycle through 2 different custom stylesheets (and none at all) for use with Preview

Attention Linux Packagers: Starting with Sigil v1.9.20, MathJax 3.2.2+ is required to render MathML in Sigil’s Preview Window. If you do nothing different with your Sigil builds, our custom bundled version of MathJax 3.x will be included and things will work. If you wish to use your system version of MathJax v3, make sure 1) Your version of MathJax is at least 3.2.2, and b) use the new CMake define -DMATHJAX3_DIR= to supply the path to your MathJax 3.2.2+ location. If you were using -DMATHJAX_DIR= to build/package Sigil in the past, it will do nothing with Sigil 1.9.20+. We did this on purpose so that no breakage of Sigil’s MathML rendering would occur. Check Sigil’s build documentation for details.

For additional information about the new user interface and new tools added to Sigil’s Find and Replace see this thread in our Forum on


The only installer that’s appropriate for Windows 7 is the installer with “Legacy” in the name.

The latest version of the Sigil User Guide can always be downloaded from the Sigil website, or from its own GitHub repository.

Please check the Sigil website for important Sigil support links, additional resource downloads, and platform-specific trouble-shooting tips/requirements.

PGP Fingerprint (for signed tags and source archives): B5A5 6206 AB0F BC1A 24EF AB8A A166 D29A 8FCD AC63

All binary (and source) downloads can also be found as assets at the bottom of The Sigil-1.9.20 Github Release page.