What is Sumatra PDF?
Sumatra PDF is a slim, free, open-source PDF viewer for Windows.
SumatraPDF is one of several apps knocking around that are designed to simplify your PDF viewing - and it doesn't do a bad job either. Opening files in the program is virtually as quick as opening and closing your eyes and it doesn't take a genius to find your way around the interface.
Options are a little thin on the ground but SumatraPDF provides a very comfortable environment for reading PDFs and you can print documents without much hassle. Give me this over Acrobat any day for looking at eBooks.
Sumatra PDF is a slim, free, open-source PDF viewer for Windows. Why another PDF reader? Sumatra has a minimalistic design. Simplicity has a higher priority than a lot of features. It's small and starts up very fast.
Sumatra is designed for portable use: it's just one file with no external dependencies so you can easily run it from external USB drive.
Here's what Sumatra can do for you:
open PDF files via menu
open PDF files via drag & drop
set different zoom levels via menu