Sumatra PDF, also known as Sumatra, is an open source PDF reader for Microsoft Windows.
1. Sumatra PDF is powerful, small and portable.
2. Sumatra PDF starts very fast and comes with a clean and simple interface.
3. Besides basic features like zoom and print, Sumatra PDF supports various viewing modes, e.g. full screen and presentation mode, keyboard shortcuts and command-line arguments.
4. The PDF Reader also includes a plugin that can be installed during setup for viewing PDF documents in Firefox, Chrome and Opera.