Some Computer file Extension List

Text Files
.doc - Microsoft Word Document
.log -Log File
.msg - Mail Message
.rtf - Rich Text Format File
.txt -Plain Text File
.wpd -WordPerfect Document
.wps -Microsoft Works Word Processor Document Data Files -
.123 -Lotus 1-2-3 Spreadsheet
.csv -Comma Separated Values File
.dat -Data File
.db -Database File
.dll -Dynamic Link Library
.mdb -Microsoft Access Database
.pps -PowerPoint Slide Show
.ppt -PowerPoint Presentation
.sql -Structured Query Language Data
.wks -Microsoft Works Spreadsheet
.xls -Microsoft Excel Spreadsheet
.xml -XML File


Image Files
.mng - Multiple Network Graphic
.pct -Picture File Raster Image Files
.bmp -Bitmap Image File
.gif -Graphical Interchange Format File
.jpeg  -JPEG Image File
.jpg -JPEG Image File
.png -Portable Network Graphic
.psd -Photoshop Document
.psp -Paint Shop Pro Image File
.tif -Tagged Image File Vector Image Files
.ai -Adobe Illustrator File
.drw -Drawing File
.dxf -Drawing Exchange Format File
.eps -Encapsulated PostScript File
.ps -PostScript File
.svg -Scalable Vector Graphics File 3D Image Files
.3dm -Rhino 3D Model
.3dmf -QuickDraw 3D Metafile Page Layout Files
.indd -Adobe InDesign File
.pdf -Portable Document Format File
.qxd -QuarkXpress Document
.qxp -QuarkXpress Project File


Audio Files
.aac - Advanced Audio Coding File
.aif -Audio Interchange File Format
.iff -Interchange File Format
.m3u -Media Playlist File
.mid -MIDI File
.midi -MIDI File
.mp3 -MP3 Audio File
.mpa -MPEG Audio File
.ra -Real Audio File
.ram -Real Audio Media
.wav -WAVE Audio File
.wma -Windows Media Audio File

Video Files
.3gp  - 3GPP Multimedia File
.asf -Advanced Systems Format File
.asx -Microsoft ASF Redirector File
.avi -Audio Video Interleave File
.mov -Apple QuickTime Movie
.mp4 -MPEG-4 Video File
.mpg -MPEG Video File
.qt -Apple QuickTime Movie
.rm -Real Media File
.swf -Macromedia Flash Movie
.wmv -Windows Media Video File


Web Files
.asp - Active Server Page
.css -Cascading Style Sheet
.htm -Hypertext Markup Language File
.html -Hypertext Markup Language File
.js -JavaScript File
.jsp -Java Server Page
.php - Hypertext Preprocessor File
.xhtml -Extensible Hypertext Markup Language File

Font Files
.fnt  -Font File
.fon -Generic Font File
.otf -OpenType Font
.ttf -TrueType Font

Plugin Files
.8bi  - Photoshop Plug-in
.plugin -Mac OS X Application Plug-in
.xll -Excel Add-In File

System Files
.cab - Windows Cabinet File
.cpl - Windows Control Panel
.cur -Windows Cursor
.dmp -Windows Memory Dump
.drv -Device Driver
.key -Security Key
.lnk -File Shortcut
.sys -Windows System File


Settings Files
.cfg - Configuration File
.ini -Windows Initialization File
.reg -Registration Information

Executable Files
.app  -Mac OS X Application
.bat -DOS Batch File
.cgi -Common Gateway Interface Script
.com -DOS Command File
.exe -Windows Executable File
.pif -Program Information File
.vb -VBScript File
.ws -Windows Script

Compressed Files
.deb - Debian Software Package
.gz -Gnu Zipped File
.pkg -Mac OS X Installer Package
.rar -WinRAR Compressed Archive
.sea -Self-Extracting Archive
.sit -Stuffit Archive
.sitx -Stuffit X Archive
.zip --Zipped File Encoded Files
.bin -Macbinary II Encoded File
.hqx -BinHex 4.0 Encoded File
.mim -Multi-Purpose Internet Mail Message
.uue -Uuencoded File


Developer Files
.c  C/C++ Source Code File
.cpp -C++ Source Code File
.java -Java Source Code File
.pl -Perl Script
.aspx- asp.net

Disk Files
.dmg  Mac OS X Disk Image
.iso -Disc Image File
.toast-Toast Disc Image
.vcd -Virtual CD

Backup Files
.bak  - Backup File
.gho -Norton Ghost Backup File
.old -Backup File
.ori -Original File
.tmp -Temporary File

Game Files
.gam - Saved Game File
.nes -Nintendo (NES) ROM File
.rom -N64 Game ROM File
.sav -Saved Game

Misc Files
.msi - Windows Installer Package
.torrent -BitTorrent File
.yps -Yahoo! Messenger Data File