Extension

Format

pdf

Portable Document Format file

txt

Unformatted text file

jpg, jpeg

Joint Photographic Experts Group photo file

png

Portable Network Graphics file

gif

Graphical Interchange Format file

docx

Microsoft Word document

csv

Comma-separated values file

tif, tiff

Tagged Image Format file

xls

Microsoft Excel workbook before Excel 2007

xlsx

Microsoft Excel workbook after Excel 2007

doc

Microsoft Word document before Word 2007

xps

XML-based document

zip

Compressed file

docm

Microsoft Word macro-enabled document

rtf

Rich Text Format file

bmp

Bitmap file

htm, html

Hypertext markup language page

xlsm

Microsoft Excel macro-enabled workbook after Excel 2007

pptx

Microsoft PowerPoint presentation

m4a

MPEG-4 audio file

mov

Apple QuickTime movie file

wav

Wave audio file

wma

Windows Media Audio file

wmd

Windows Media Download file

wmv

Windows Media Video file