.doc
.docx
.docm

Microsoft Word

.gif

GIF Image

.htm
.html
.mht

standard web html

.jpe
.jpg
.jpeg

JPEG Image

.pdf

Adobe PDF

.ppt
.pps
.pptx
.pptm
.ppsx
.ppsm

Microsoft Powerpoint

.rtf

RTF Document

.tif
.tiff

TIFF Image

.txt

Text Document

.csv
.xls
.xlsx
.xlsm

Microsoft Excel