PDF, Microsoft Word (.doc and .docx), Microsoft Excel (.xls and
.xlsx), WordPerfect (.wp), Text (.txt), Rich Text (.rtf), Graphics
(.jpg, .jpeg, .gif, .tif, .tiff, .bmp and .png), Web (.htm or
.html). You can also upload files directly from your Google Docs,
Dropbox, Box.net, or Evernote accounts.