WiX

The Windows Installer XML (WiX) is a toolset that builds Windows installation packages from XML source code. See http://wix.sourceforge.net/ for more information.

WiX: Beware of adding Icon tags with "SourceFile" value pointing to .EXE application files

If you create MSI setups with WiX Toolkit you should be aware that tags in your .WXS file will cause your resulting MSI file to grow by the size of EXE file linked in SourceFile attribute.

Don't do this:

<icon id="example.ico" sourcefile="SourceDir\MyApp.EXE" />

Always use small .ICO files.

WiX