Common file extensions that are good to know, organized by file format
|
Text Files
|
|
|
Word Document
|
|
|
Word Open XML Document
|
|
|
Log File
|
|
|
Outlook Mail Message
|
|
|
Pages Document
|
|
|
Rich Text Format File
|
|
|
Plain Text File
|
|
|
WordPerfect Document
|
|
|
Microsoft Works Word Processor Document
|
|
|
Data Files
|
|
|
Access 2007 Database File
|
|
|
Windows Binary Performance Log File
|
|
|
Comma Separated Values File
|
|
|
Data File
|
|
|
Database File
|
|
|
eFax Document
|
|
|
Microsoft Access Database
|
|
|
Program Database
|
|
|
PowerPoint Slide Show
|
|
|
PowerPoint Presentation
|
|
|
PowerPoint Open XML Document
|
|
|
OpenOffice.org Base Database File
|
|
|
Standard Data File
|
|
|
Structured Query Language Data
|
|
|
vCard File
|
|
|
Works Spreadsheet
|
|
|
Excel Spreadsheet
|
|
|
Microsoft Excel Open XML Document
|
|
|
XML File
|
|
|
Image Files
|
|
|
Bitmap Image File
|
|
|
Graphical Interchange Format File
|
|
|
JPEG Image File
|
|
|
Portable Network Graphic
|
|
|
Photoshop Document
|
|
|
Paint Shop Pro Image File
|
|
|
Thumbnail Image File
|
|
|
Tagged Image File
|
|
|
Vector Image Files
|
|
|
Adobe Illustrator File
|
|
|
Drawing File
|
|
|
Encapsulated PostScript File
|
|
|
PostScript File
|
|
|
Scalable Vector Graphics File
|
|
|
3D Image Files
|
|
|
Rhino 3D Model
|
|
|
AutoCAD Drawing Database File
|
|
|
Drawing Exchange Format File
|
|
|
ArchiCAD Project File
|
|
|
Page Layout Files
|
|
|
Adobe InDesign File
|
|
|
Picture File
|
|
|
Portable Document Format File
|
|
|
QuarkXPress Document
|
|
|
QuarkXPress Project File
|
|
|
Open Office XML Relationships File
|
|
|
Audio Files
|
|
|
Advanced Audio Coding File
|
|
|
Audio Interchange File Format
|
|
|
Interchange File Format
|
|
|
Media Playlist File
|
|
|
MIDI File
|
|
|
MP3 Audio File
|
|
|
MPEG-2 Audio File
|
|
|
Real Audio File
|
|
|
WAVE Audio File
|
|
|
Windows Media Audio File
|
|
|
Video Files
|
|
|
3GPP2 Multimedia File
|
|
|
3GPP Multimedia File
|
|
|
Advanced Systems Format File
|
|
|
Microsoft ASF Redirector File
|
|
|
Audio Video Interleave File
|
|
|
Flash Video File
|
|
|
Apple QuickTime Movie
|
|
|
MPEG-4 Video File
|
|
|
MPEG Video File
|
|
|
Real Media File
|
|
|
Flash Movie
|
|
|
DVD Video Object File
|
|
|
Windows Media Video File
|
|
|
Web Files
|
|
|
Active Server Page
|
|
|
Internet Security Certificate
|
|
|
Certificate Signing Request File
|
|
|
Cascading Style Sheet
|
|
|
Hypertext Markup Language File
|
|
|
Hypertext Markup Language File
|
|
|
JavaScript File
|
|
|
Java Server Page
|
|
|
Hypertext Preprocessor File
|
|
|
Rich Site Summary
|
|
|
TitanTV Television Listing File
|
|
|
TitanTV Television Listing File
|
|
|
Extensible Hypertext Markup Language File
|
|
|
Font Files
|
|
|
Windows Font File
|
|
|
Generic Font File
|
|
|
OpenType Font
|
|
|
TrueType Font
|
|
|
Plugin Files
|
|
|
Photoshop Plug-in
|
|
|
Mac OS X Plug-in
|
|
|
Excel Add-In File
|
|
|
System Files
|
|
|
Windows Cabinet File
|
|
|
Windows Control Panel
|
|
|
Windows Cursor
|
|
|
Dynamic Link Library
|
|
|
Windows Memory Dump
|
|
|
Device Driver
|
|
|
Security Key
|
|
|
File Shortcut
|
|
|
Windows System File
|
|
|
Settings Files
|
|
|
Configuration File
|
|
|
Windows Initialization File
|
|
|
Mac OS X Keychain File
|
|
|
Outlook Profile File
|
|
|
Executable Files
|
|
|
Mac OS X Application
|
|
|
DOS Batch File
|
|
|
Common Gateway Interface Script
|
|
|
DOS Command File
|
|
|
Windows Executable File
|
|
|
Program Information File
|
|
|
VBScript File
|
|
|
Windows Script
|
|
|
Compressed Files
|
|
|
7-Zip Compressed File
|
|
|
Debian Software Package
|
|
|
Gnu Zipped Archive
|
|
|
Mac OS X Installer Package
|
|
|
WinRAR Compressed Archive
|
|
|
Stuffit Archive
|
|
|
Stuffit X Archive
|
|
|
Tarball File
|
|
|
Zipped File
|
|
|
Extended Zip File
|
|
|
Encoded Files
|
|
|
Macbinary Encoded File
|
|
|
BinHex 4.0 Encoded File
|
|
|
Multi-Purpose Internet Mail Message File
|
|
|
Uuencoded File
|
|
|
Developer Files
|
|
|
C/C++ Source Code File
|
|
|
C++ Source Code File
|
|
|
Java Source Code File
|
|
|
Perl Script
|
|
|
Backup Files
|
|
|
Backup File
|
|
|
Backup File
|
|
|
Norton Ghost Backup File
|
|
|
Original File
|
|
|
Temporary File
|
|
|
Disk Files
|
|
|
Mac OS X Disk Image
|
|
|
Disc Image File
|
|
|
Toast Disc Image
|
|
|
Virtual CD
|
|
|
Game Files
|
|
|
Saved Game File
|
|
|
Nintendo (NES) ROM File
|
|
|
N64 Game ROM File
|
|
|
Saved Game
|
|
|
Misc Files
|
|
|
Outlook Express E-mail Folder
|
|
|
Windows Installer Package
|
|
|
Partially Downloaded File
|
|
|
BitTorrent File
|
|
|
Yahoo! Messenger Data File
|
|
Comments