Common File Extensions
.avi
Audio Video Interleave File; very common
.wma
Windows Media Audio File; comparable compression to an mp3 file
.bmp
Bit Map Picture; Default format used in Windows. Huge in size, 10 times the size of a jpg
.xls
Excel Spreadsheets prior to 2007
.exe
Executable File
.gif
Graphical Interchange Format file; used for particle, used on the web and also for animated files.
.htm or .html
Hypertextt Markup Language File; Internet web pages are made with these
.jpg
Joint Photographic Experts Group (short version)
.jpeg
Joint Photographic Experts Group; most common image format used because of its compression.
.mp3
MP3 Audio File; most common. bit rates range from 125, 192, 256, and 320
.mp4
MPEG 4 Video File used in iPods
.accdb
Microsoft Access Data Base for Access 2007
.mdb
Microsoft Data Base; database file for Microsoft Access versions prior to 2007
.wks
Microsoft Works Spreadsheet
.wps
Microsoft Works text document file
.docx
Microsoft word new xml document file extension for Word 2007 & 2010
.mov
Movie; Apple Quick time movie
.mpg
Moving Pictures Experts Group; MPEG Video file
.psp
Paint shop Pro Image File; default file when saving a Paint Shop pro file
.psd
Photoshop Document
Portable Document Format file; used in businesses today as a means of storing and emailing documents
.png
Portable Network Graphic; replacement for .gif
.pptx
Power Point presentation files for version 2007 or 2010
.ppt
Power Point presentation files prior to 2007
.rtf
Rich text format; can be easily read by many processors and keeps your formatting.
.swf
Shock Wave Flash; Macromedia Flash movie
.shw
Show; Corel presentation files
.txt
Text; plain text format file, very limited
.wav
Waveform audio format; Windows own default format
.wma
Windows Media Audio
.wpd
Word Perfect Document file owned by Corel
.doc
document; Microsoft word document files for versions prior to 2007
.tif
tagged Image File; not very common mainly used for black and white drawings
.xlsx
with XML architecture. Microsoft Excel spreadsheet versions 2007 and 2010
