SharePoint Document Viewer is a handy tool that enables you to easily open various MS Office files from the SharePoint library.

Using this application you can view PDFs, web pages, MS Office documents, text files and images. The application supports file formats from MS Office 2003, 2007, 2010 and 2013.

Once your file is open, you have the freedom to zoom in and fit the document to page or to the preview window as well as preview the pages in thumbnail size.