Below you find the
most common file type extensions (file name endings):
pdf - Adobe Acrobat Format (PDF Format)ps - Adobe PostScript file
doc - Microsoft Word (up to version 2003, deprecated)
docx - Microsoft Word (version 2007 and later)
odt - Open Office Write text document
rtf - Rich Text Format (another Microsoft text format, not recommended to use)
xls - Microsoft Excel (up to version 2003, deprecated)
xlsx - Microsoft Excel (Version 2007 and later)
ods - Open Office Calc spreadsheet file
ppt - Microsoft Powerpoint presentation (up to version 2003, deprecated)
pptx - Mircosoft Powerpoint presentation (version 2007 and later)
odp - Open Office Presentation file
mp4 - Multimedia container format most commonly used for video and audio
zip - PKZip / WinZip compressed filerar - RAR compressed file
gz - GZip compressed file
tgz - GZip compressed tar archive
gif - Compuserve GIF image file
jpg - JPEG (Joint Photographic Experts Group) image file
png - Portable Network Graphics image file
html - HTML Web hypertext file
txt - Plain text file
tex - TeX typesetting format file
Please see also:
http://en.wikipedia.org/wiki/List_of_file_formats