Sumatra PDF is powerful, small, portable and starts up very fast PDF reader for Windows. It supports many different format including DF, eBook (ePub, Mobi), XPS, DjVu, CHM, Comic Book (CBZ and CBR). Also Sumatra PDF is designed for portable use: it’s just one file with no external dependencies so you can easily run it from external USB drive. This classifies it as a portable application. As is characteristic of many portable applications, Sumatra takes up little disk space. SumatraPDF works on Windows 10, Windows 8, Windows 7, Vista, XP and Windows 2000. Not supported: Windows 95, 98 and ME.
Changes in Sumatra PDF 3.1 (2015-10-24):
• 64bit builds
• all documents are restored at startup if a window with multiple tabs is closed (or if closing happened through File -> Exit); this can be disabled through the RestoreSession advanced setting
• printing happens (again) always as image which leads to more reliable results at the cost of requiring more printer memory; the “Print as Image” advanced printing option has been removed
• scrolling with touchpad (e.g. on Surface Pro) now works
• many crash and other bug fixes