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
.mp3 - MP3 audio file
.mpa - MPEG-2 audio file
.wav - WAVE file
.wma - Windows Media audio file
.wpl - Windows Media Player
playlist
.dat - Digital Audio Tape
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
.mpg or .mpeg - Moving picture
expert File
.mp4 MPEG-4 - Video File
.rm - Real Media File
.swf - Shockwave flash File
.vob - DVD Video Object File
.wmv - Windows Media Video File
.3g2 - Third Generation Partnership
3GPP2 Multimedia File
.3gp - 3GPP multimedia File
.divX - Digital Video Express
(DivX-encoded Movie)
Text File
Extensions
File Extension File Extension
Meaning
.doc and .docx - Microsoft Word
file
.odt - OpenOffice Writer document
file
.msg - Outlook Mail Message
.pdf - Portable Document Format
.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
.fdr - Final Draft 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
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
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 - Dynamic Link Library
.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 - Tagged Image
File Format image
.3ds - 3D Studio Scene
.3dm - Rhino 3D Model
