Computer Knowledge

List of Computer File Extensions and their Meaning

List of Computer File Extensions and their Meaning

List of Computer File Extensions and their Meaning

File extensions indicate the file format or file type. It is start dot (.) symbol and filename. File extensions consist of three or four characters, although in rare cases it could be two .Which are typically letters or digits.  Such as .txt, .mp3, .pptx etc. This file extension helps the operating system to know what type of file or program to run when you double-click on it. Here list of computer file extension and their meaning.
Executable File Extensions

File Extension File Extension Meaning
.apk Android package file
.bat Batch file
.bin Binary file
.cgi Common Gateway Interface Script
.com MS-DOS command file
.exe Executable file
.jar Java Archive file
.py Python file
.wsf Windows Script File

Audio File Extensions

File Extension File Extension Meaning
.aif AIF/Audio Interchange audio file
.cda CD audio track file
.iff Interchange File Format
.mid or .midi MIDI audio file.
.mp3 MP3 audio file
.mpa MPEG-2 audio file
.wav WAVE file
.wma Windows Media audio file
.wpl Windows Media Player playlist

Video File Extensions

File Extension File Extension Meaning
.avi Audio Video Interleave File
.flv Adobe Flash Video File
.h264 H.264 video File
.m4v Apple MP4 video File
.mkv Matroska Multimedia Container
.mov Apple QuickTime movie File
.mp4 MPEG-4 Video File
.mpg or .mpeg MPEG video File
.rm Real Media File
.swf Shockwave flash File
.vob DVD Video Object File
.wmv Windows Media Video File
.3g2 3GPP2 Multimedia File
.3gp 3GPP multimedia File

Text File Extensions

File Extension File Extension Meaning
.doc and .docx Microsoft Word file
.odt OpenOffice Writer document file
.msg Outlook Mail Message
.pdf PDF file
.rtf Rich Text Format File
.tex A LaTeX document file
.txt Plain text file
.wks and .wps Microsoft Works Word Processor Document file
.wpd WordPerfect document

Spreadsheet File Extensions

File Extension File Extension Meaning
.ods OpenOffice Calc spreadsheet file
.xlr Microsoft Works spreadsheet file
.xls Microsoft Excel file
.xlsx Microsoft Excel Open XML spreadsheet file

Presentation File Extensions

File Extension File Extension Meaning
.key Keynote presentation
.odp OpenOffice Impress presentation file
.pps PowerPoint slide show
.ppt PowerPoint presentation
.pptx PowerPoint Open XML presentation

Database File Extensions

File Extension File Extension Meaning
.accdb Access 2007 Database File
.csv Comma separated value file
.dat Data file
.db or .dbf Database file
.log Log file
.mdb Microsoft Access database file
.pdb Program Database
.sav Save file (e.g. game save file)
.sql SQL/Structured Query Language database file
.tar Linux / Unix tarball file archive

System Related File Extensions

File Extension File Extension Meaning
.bak Backup file
.cab Windows Cabinet file
.cfg Configuration file
.cpl Windows Control panel file
.cur Windows cursor file
.dll DLL file
.dmp Dump file
.drv Device driver file
.icns macOS X icon resource file
.ico Icon file
.ini Initialization file
.lnk Windows shortcut file
.msi Windows installer package
.sys Windows system file
.tmp Temporary file

Web File Extensions

File Extension File Extension Meaning
.asp and .aspx Active Server Page file
.cer Internet security certificate
.cfm ColdFusion Markup file
.cgi or .pl Perl script file
.css Cascading Style Sheet file
.htm and .html HTML/Hypertext Markup Language file
.js JavaScript file
.jsp Java Server Page file
.part Partially downloaded file
.php PHP Source Code file
.rss RSS/Rich Site Summary file
.xhtml XHTML / Extensible Hypertext Markup Language file

Image File Extensions

File Extension File Extension Meaning
.ai Adobe Illustrator file
.bmp Bitmap image File
.gif GIF/Graphical Interchange Format image
.ico Icon file
.jpeg or .jpg JPEG image
.max 3ds Max Scene File
.obj Wavefront 3D Object File
.png PNG / Portable Network Graphic image
.ps PostScript file
.psd PSD / Adobe Photoshop Document image
.svg Scalable Vector Graphics file
.tif or .tiff TIFF image
.3ds 3D Studio Scene
.3dm Rhino 3D Model

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7 Comments

  1. 1
  2. 3

    What about XQK? The ChiPmuNk client used to use it for most installers, and I believe WormSurf uses it too, as of version 6.

  3. 4
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  5. 7

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