SumatraPDF is a multi-format (PDF, EPUB, MOBI, FB2, CHM, XPS, DjVu) reader for Windows under (A)GPLv3 license, with some code under BSD license (see AUTHORS).

More information:

• main website with downloads and documentation
• manual
• all other docs

To compile you need Visual Studio 2019. Free Community edition works.

I tend to update to the latest release of Visual Studio. Lately C++ evolves quickly and Visual Studio constantly adds latest capabilities. If things don't compile, first make sure you're using the latest version of Visual Studio.

Open vs2019/SumatraPDF.sln when using Visual Studio 2019