ALMOST EVERY FILE FORMAT IN COMPUTER WORLD

A 

ABK     Corel Draw AutoBackup 
ACL     Corel Draw 6 keyboard accelerator 
ACM     Used by Windows in the system directory 
ACP     Microsoft Office Assistant Preview file 
ACT     Microsoft Office Assistant Actor file 
ACV     OS/2 drivers that compress and decompress audio data 
AD     After Dark screensaver 
ADB     Appointment database used by HP 100LX organizer 
ADD     OS/2 adapter drivers used in the boot process 
ADM     After Dark MultiModule screensaver 
ADP     Used by FaxWorks to do setup for fax modem interaction 
ADR     After Dark Randomizer screensaver 
AFM     Adobe font metrics 
AF2     ABC Flowchart file 
AF3     ABC Flowchart file 
AI     Adobe Illustrator drawing 
AIF     Apple Mac AIFF sound 
ALB     JASC Image Commander album 
ALL     Arts & Letters Library 
AMS     Velvert Studio music module (MOD) file 
ANC     Canon Computer Pattern Maker file that is a selectable list of pattern colors 
ANI     Animated Cursor 
ANS     ANSI text 
API     Application Program Interface file; used by Adobe Acrobat 
APR     Lotus Approach 97 file 
APS     Microsoft Visual C++ file 
ARC     LH ARC (old version) compressed archive 
ARJ     Robert Jung ARJ compressed archive 
ART     Xara Studio drawing 
ART     Canon Crayola art file 
ASA     Microsoft Visual InterDev file 
ASC     ASCII text 
ASD     WinWord AutoSave 
ASM     Assembler language source file 
ASP     Active Server Page (an HTML file containing a Microsoft server-processed script) 
ASP     Procomm Plus setup and connection script 
AST     Claris Works "assistant" file 
ATT     AT&T Group 4 bitmap 
AVI     Microsoft Video for Windows movie 
AWD     FaxView document 


B 

BAK     Backup file 
BAS     BASIC code 
BAT     Batch file 
BFC     Windows 95 Briefcase document 
BG     Backgammon for Windows game 
BI     Binary file 
BIF     GroupWise initialization file 
BIN     Binary file 
BK     Sometimes used to denote backup versions 
BK$     Also sometimes used to denote backup versions 
BKS     An IBM BookManager Read bookshelf 
BMK     An A bookmark file 
BMP     Windows or OS/2 bitmap 
BM1     Apogee BioMenace data file 
BRX     A file for browsing an index of multimedia options 
BSP     Quake map 
BS1     Apogee Blake Stone data file 
BTM     Batch file used by Norton Utilities 
B4     Helix Nuts and Bolts file 



C 

C     C code 
CAB     Microsoft cabinet file (program files compressed for software distribution) 
CAL     CALS Compressed Bitmap 
CAL     Calendar schedule data 
CAS     Comma-delimited ASCII file 
CAT     IntelliCharge categorization file used by Quicken 
CB     Microsoft clean boot file 
CCB     Visual Basic Animated Button configuration 
CCF     Multimedia Viewer configuration file used in OS/2 
CCH 
Corel Chart 
CCM     Lotus CC:Mail "box" (for example, INBOX.CCM) 
CDA     CD Audio Track 
CDF     Microsoft Channel Definition Format file 
CDI     Phillips Compact Disk Interactive format 
CDR     Core Draw drawing 
CDT     Corel Draw template 
CDX     Corel Draw compressed drawing 
CEL     CIMFast Event Language file 
CFB     Comptons Multimedia file 
CFG     Configuration file 
CGI     Common Gateway Interface script file 
CGM     Computer Graphics Metafile 
CH     OS/2 configuration file 
CHK     File fragments saved by Windows Disk Defragmenter or ScanDisk 
CHP     Ventura Publisher chapter 
CIL     Clip Gallery download package 
CIM     Sim City 200 file 
CIN     OS/2 change control file that tracks changes to an INI file 
CK1     iD/Apogee Commander Keen 1 data file 
CK2     iD/Apogee Commander Keen 2 data file 
CK3     iD/Apogee Commander Keen 3 data file 
CK4     iD/Apogee Commander Keen 4 data file 
CK5     iD/Apogee Commander Keen 5 data file 
CK6     iD/Apogee Commander Keen 6 data file 
CLASS     Java class 
CLP     Windows Clipboard file 
CLS     Visual Basic Class Module 
CMD     Command file for Windows NT (similar to a DOS .BAT file) 
CMD     DOS CP/M command file 
CMD     dBase-II program file 
CMF     Corel Metafile 
CMP     JPEG Bitmap 
CMP     Address document 
CMV     Corel Move animation 
CMX     Corel Presentation Exchange image 
CNF     Configuration file used by Telnet, Windows, and other applications 
CNM     Windows application menu options and setup file 
CNQ     Compuworks Design Shop file 
CNT     Windows (or other) system content files for the help index and other purposes 
COB     trueSpace2 object 
COD     Microsoft C compiler output as displayable assembler with original C as comments 
COM     Command file (program) 
CPD     Fax Cover document 
CPE     Fax Cover document 
CPI     Microsoft MS-DOS code page information file 
CPL     Control Panel extension 
CPL     Corel colour palette 
CPP     C++ code 
CPR     Corel Presents Presentation 
CPT     Corel Photo-Paint image 
CPX     Corel Presentation Exchange Compressed drawing 
CRD     Cardfile file 
CRP     Corel Presents Run-Time Presentation 
CRT     Certificate file 
CSC     Corel Script 
CSP     PC Emcee On-Screen image 
CSV     Comma-separated values file 
CT     Scitex CT Bitmap 
CTL     Used in general to mean a file containing control information. 
CUE     Microsoft Cue Cards data 
CUR     Windows Cursor 
CUT     Dr Halo bitmap 
CV     Corel Versions archive 
CV     Microsoft CodeView information screen 
CWK     Claris Works data file 
CWS     Claris Works template 
CXX     C++ source code file 


D 

DAT     Data file 
DAT     WordPerfect Merge Data 
DBF     Aston-Tate dBASE database 
DBX     DataBeam image 
DCR     Shockwave file 
DCS     Desk Color Separation file 
DCX     Fax image (based on PCX) 
DDF     BTRIEVE database 
DEF     SmartWare II data file 
DEF     C++ Definition 
DER     Certificate file 
DIB     Device-Independent Bitmap 
DIC     Dictionary 
DIF     Data Interchange Format spreadsheet 
DIR     Macromedia Director file 
DIZ     Description file 
DLG     C++ Dialogue Script 
DLL     Dynamic-Link Library 
DMF     X-Trakker music module (MOD) file 
DOC     FrameMaker or FrameBuilder document 
DOC     WordStar document 
DOC     WordPerfect document 
DOC     Microsoft Word document 
DOT     Microsoft Word document Template 
DPR     Borland Delphi project header file 
DRV     Driver 
DRW     Micrografx Designer/Draw 
DSG     DooM saved game 
DSM     Dynamic Studio music module (MOD) file 
DSP     Microsoft Developer Studio project 
DSQ     Corel QUERY file 
DSW     Microsoft Developer Studio workspace 
DWG     AutoCAD drawing eXchange format 
DXF     AutoDesk Drawing Interchange format 


E 

EMF     Enhanced Windows Metafile 
ENC     Encore file 
EPS     Encapsulated PostScript image 
ER1     ERWin file 
ERX     ERWin file 
EVY     Envoy document 
EWL     Microsoft Encarta document 
EXE     Executable file (program) 


F 

F     FORTRAN file 
F77     FORTRAN file 
F90     FORTRAN file 
FAR     Farandole Composer music module (MOD) file 
FAV     Microsoft Outlook navigation bar 
FAX     FAX Type image 
FH3     Aldus Freehand 3 drawing 
FIF     Fractal image file 
FITS     CCD camera image 
FLC     AutoDesk FLIC animation 
FLI     AutoDesk FLIC animation 
FLT     Corel filter 
FLT     StarTrekker music module (MOD) file 
FMB     Oracle binary source code for form, version 4.0 and later 
FMT     Oracle text format of form, version 4.0 and later 
FMT     Microsoft Schedule+ print file 
FMX     Oracle executable form, version 4.0 and later 
FOG     Fontographer font 
FON     System font 
FOR     FORTRAN file 
FOT     Font-related file 
FP     FileMaker Pro file 
FP1     Flying Pigs for Windows data file 
FP3     FileMaker Pro file 
FPX     FlashPix bitmap 
FRM     Form 
FRM     FrameMaker or FrameBuilder document 
FRM     Oracle executable form version 3.0 and earlier 
FRM     Visual Basic form 
FRM     WordPerfect Merge form 
FRX     Visual Basic form stash file 


G 

GAL     Corel Multimedia Manager album 
GCP     Ground Control Point file used in image processing of remote sensing data . 
GED     Graphic Environment Document (drawing) 
GEM     GEM metafile 
GEN     Ventura-Generated text file 
GFC     Patton&Patton Flowcharting 4 flowchart file 
GFI     Genigraphics Graphics Link presentation 
GFX     Genigraphics Graphics Link presentation 
GID     Windows 95 global index file (containing help status)
GIF     CompuServe bitmap 
GIM     Genigraphics Graphics Link presentation 
GIX     Genigraphics Graphics Link presentation 
GNA     Genigraphics Graphics Link presentation 
GNX     Genigraphics Graphics Link presentation 
GRA     Microsoft Graph 
GRD     Grid file, used in image processing of remote sensing data often to form map projections. 
GRP     Program Manager Group 
GTK     Graoumftracker (old) music module (MOD) file 
GT2     Graoumftracker (new) music module (MOD) file 
GWX     Genigraphics Graphics Link presentation 
GWZ     Genigraphics Graphics Link presentation 
GZ     Unix Gzip compressed file 



H 

H     C program header 
HED     HighEdit document 
HEL     Microsoft Hellbender saved game 
HEX     Macintosh BinHex 2.0 file 
HGL     HP Graphics Language drawing 
HLP     Help file 
HOG     Lucas Arts Dark Forces WAD file 
HPJ     Visual Basic Help Project 
HPP     C++ program header 
HQX     Macintosh BinHex 4.0 file 
HST     History file 
HT     HyperTerminal 
HTM     Hypertext document 
HTML     Hypertext document 
HTX     Extended HTML template 


I 

ICA     Citrix file 
ICB     Targa bitmap 
ICM     Image Color Matching profile file 
ICO     Windows Icon 
IDD     MIDI Instrument Definition 
IDQ     Internet Data Query file 
IFF     Amiga ILBM 
IGF     Inset Systems metafile 
IIF     QuickBooks for Windows interchange file 
IMA     WinImage file 
IMG     GEM image 
INC     Assembler language or Active Server include file 
INF     Information file 
INI     Initialization file 
INP     Oracle source code for form, version 3.0 and earlier 
INS     InstallShield install script 
INS     X-Internet sign-up file 
ISO     Lists the files on a CD-ROM; based on the ISO 9660 CD-ROM file system standard 
ISP     X-Internet sign-up file 
ISU     InstallShield uninstall script 
IT     Impulse Tracker music module (MOD) file 
IW     Idlewild screensaver 


J 

JAR     Java ARchive file (a compressed file for applets and related files) 
JAVA     Java source code 
JBF     Paint Shop Pro image browser file 
JFF     JPEG bitmap 
JIF     JPEG bitmap 
JMP     SAS JMPDiscovery chart-to-statistics file 
JN1     Epic MegaGames Jill of the Jungle data file 
JPEG     JPEG bitmap 
JPG     JPEG bitmap 
JS     JavaScript source code 
JTF     JPEG bitmap 


K 

KDC     Kodak Photo-Enhancer 
KFX     KoFax Group 4 image 
KYE     Kye game data 


L 

LBM     Deluxe Paint bitmap 
LDB     Microsoft Access lock file 
LEG     Legacy document 
LHA     Alternate file suffix for LZH 
LIB     Library 
LIS     Output file produced by a Structured Query Reporting (SQR) program 
LOG     1. Log file 
LOG     2. Log file used by pokerstars for errors in their poker software 
LPD     Helix Nuts and Bolts file 
LRC     Intel Video Phone file 
LST     List file 
LWO     Lightwave Object file 
LWP     Lotus Wordpro 96/97 file 
LZH     LH ARC compressed archive 
LZS     Skyroads data file 


M 

M3D     Corel Motion 3D animation 
MAC     MacPaint image 
MAD     Microsoft Access module 
MAF     Microsoft Access Form 
MAK     Visual Basic or MS Visual C++ Project 
MAM     Microsoft Access Macro 
MAP     Map file 
MAP     Duke Nukem 3D WAD game file 
MAQ     Microsoft Access Query 
MAR     Microsoft Access Report 
MAS     Lotus Freelance Graphics Smartmaster file 
MAT     Microsoft Access Table 
MAX     Paperport file 
MAZ     Hover maze data 
MB1     Apogee Monster Bash data file 
MCC     Dialer10 calling card 
MCS     MathCAD image 
MCW     Microsoft Word for Macintosh document 
MDA     Microsoft Access add-in 
MDB     Microsoft Access database 
MDE     Microsoft Access MDE file 
MDL     Digital Tracker music module (MOD) file 
MDL     Quake model file 
MDN     Microsoft Access blank database template 
MDW     Microsoft Access Workgroup 
MDZ     Microsoft Access wizard template 
MED     Music Editor, OctaMED music module (MOD) file 
MER     Format for interchanging spreadsheet/database data; recognized by Filemaker, Excel, and others 
MET     Presentation Manager metafile 
MI     Miscellaneous 
MIC     Microsoft Image Composer file 
MID     MIDI music 
MMF     Microsoft Mail File 
MMM     Microsoft Multimedia Movie 
MOD     FastTracker, StarTrekker, Noise Tracker (etc.) music module file 
MOD     Microsoft Multiplan spreadsheet 
MOV     QuickTime for Windows movie 
MPE     MPEG animation 
MPEG     MPEG animation 
MPG     MPEG animation 
MPP     Microsoft Project file 
MPP     CAD drawing file format 
MP3     MPEG Audio Layer 3 (AC3) file 
MSG     Microsoft Mail message 
MSN     Microsoft Network document 
MSP     Microsoft Paint bitmap 
MTM     MultiTracker music module (MOD) file 
MUS     Music 
MVB     Microsoft Multimedia Viewer file 
MWP     Lotus Wordpro 97 Smartmaster file 


N 

NAP     NAP Metafile 
NCB     Microsoft Developer Studio file 
NSF     Lotus Notes database 
NST     Noise Tracker music module (MOD) file 
NTF     Lotus Notes database template 


O 

OBD     Microsoft Office binder template 
OBD     Microsoft Office Binder 
OBJ     Object file 
OBZ     Microsoft Office Binder Wizard 
OCX     Microsoft Object Linking and Embedding custom control 
OFN     Microsoft Office FileNew file 
OFT     Microsoft Outlook template 
OKT     Oktalyzer music module (MOD) file 
OLB     OLE Object Library 
OLE     OLE object 
OPT     Microsoft Developer Studio file 
ORG     Lotus Organiser file 
OR2     Lotus Organiser 2 file 
OR3     Lotus Organiser 97 file 


P 

P10     Tektronix Plot 10 drawing 
PAB     Microsoft Personal Address Book 
PAK     Quake WAD file 
PAL     Windows colour palette 
PAT     Corel Draw pattern 
PBK     Microsoft Phonebook 
PBM     Portable Bitmap 
PCD     Kodak Photo-CD image 
PCL     HP Laserjet bitmap 
PCS     PICS animation 
PCT     Macintosh PICT drawing 
PCX     ZSoft PC Paintbrush bitmap 
PDF     Adobe Acrobat Portable Document Format or Netware Printer Definition File 
PDF     Package Definition File from Microsoft Systems Management Server 
PDQ     Patton&Patton Flowcharting PDQ Lite file 
PFA     Type 1 font (ASCII) 
PFB     Type 1 font (binary) 
PFC     PF Component 
PFM     Printer Font Metrics 
PGL     HP Plotter drawing 
PGM     Portable Graymap (bitmap) 
PIC     PC Paint bitmap 
PIC     Lotus picture 
PIC     Macintosh PICT drawing 
PIF     Program Information File 
PIF     IBM PIF drawing 
PIG     Lucas Arts Dark Forces WAD file 
PIN     Epic Pinball data file 
PIN     Epic Pinball data file 
PIX     Inset Systems bitmap 
PJ     MKS Source Integrity file 
PKG     Microsoft Developer Studio application extension (similar to a DLL file) 
PL     Perl program 
PLT     HPGL Plotter drawing 
PLT     AutoCAD Plot drawing 
PM5     Pagemaker 5.0 file 
PM6     Pagemaker 6.0 file 
P65     Pagemaker 6.5 file 
PNG     Portable Network Graphics bitmap 
PNG     Paint Shop Pro Browser catalogue 
PNT     MacPaint graphic file 
POT     Microsoft PowerPoint Template 
PP4     Picture Publisher 4 bitmap 
PPA     Microsoft PowerPoint Add-in 
PPM     Portable Pixelmap bitmap 
PPS     Microsoft PowerPoint slide show 
PPT     Microsoft PowerPoint presentation 
PRE     Lotus Freelance presentation 
PRF     Windows system file 
PRN     Print Table (space delimited text) 
PRS     Harvard Graphics for Windows presentation 
PRZ     Lotus Freelance Graphics 97 file 
PS     Postscript Interpreted drawing 
PSD     Adobe Photoshop bitmap 
PST     Microsoft Outlook Personal Folder File 
PTM     Polytracker music module (MOD) file 
PUB     Ventura Publisher publication 
PUB     Microsoft Publisher document 
PWD     Microsoft Pocket Word document 
PWZ     Microsoft PowerPoint Wizard 
PXL     Microsoft Pocket Excel spreadsheet 


Q 

QAD     PF QuickArt Document 
QBW     QuickBooks for Windows file 
QDT     Quick Books data file from the Quicken UK Accountancy/Tax/Invoice program 
QLB     Quick Library 
QRY     Microsoft Query 
QT     QuickTime Movie 
QTM     QuickTime Movie 
QXD     Quark XPress file 


R 


R     Pegasus Mail resource file 
RA     Real Audio sound 
RAM     Real Audio sound 
RAS     Sun Raster Images bitmap 
RAW     Raw File Format (bitmap) 
RC     Microsoft Visual C++ Resource Script 
REC     Recorder macro 
REG     Registration file 
RES     Microsoft Visual C++ Resource 
RFT     RFT-DCA 
RLE     Run-Length Encoded bitmap 
RM     Real Audio video file 
RMI     MIDI music 
ROV     Rescue Rover data file 
RPT     Microsoft Visual Basic Crystal Reports file 
RTF     Rich Text Format document 
RTM     Real Tracker music module (MOD) file 


S 

SAM     Ami Professional document 
SAV     Saved game file 
SCC     Microsoft Source Safe file 
SCD     Matrix/Imapro SCODL slide image 
SCD     Microsoft Schedule+ 7 
SCH     Microsoft Schedule+ 1 
SCN     trueSpace2 scene 
SCP     Dial-Up Networking Script 
SCR     Windows screensaver 
SCR     Fax image 
SCT     Scitex CT bitmap 
SC2     Microsoft Schedule+ 7 
SDL     SmartDraw library 
SDR     SmartDraw drawing 
SDT     SmartDraw template 
SEA     Self-expanding archive (used by Stuffit for Mac files and possibly by others) 
SEP     Tagged Image File Format (TIFF) bitmap 
SHB     Corel Show presentation 
SHB     Document shortcut file 
SHG     Hotspot bitmap 
SHS     Shell scrap file 
SHW     Corel Show presentation 
SIT     Stuffit archive of Mac files 
SLK     Symbolic Link (SYLK) spreadsheet 
SND     NeXT sound 
SND     Mac Sound Resource 
SQC     Structured Query Language (SQR) common code file 
SQR     Structured Query Language (SQR) program file 
STM     Scream Tracker music module (MOD) file 
STY     Ventura Publisher style sheet 
SVX     Amiga 8SVX sound 
SYS     System file 
S3M     Scream Tracker 3 music module (MOD) file 


T 

TAR     Tape Archive 
TAZ     Unix Gzip/Tape Archive 
TEX     Texture file 
TGA     Targa bitmap 
TGZ     Unix Gzip/Tape Archive 
THEME     Windows 95 Desk Theme 
THN     Graphics Workshop for Windows thumbnail 
TIF     Tag Image File Format (TIFF) bitmap 
TIFF     Tag Image File Format (TIFF) bitmap 
TIG     Tiger file, used by US government to distribute maps 
TLB     OLE Type Library 
TMP     Windows temporary file 
TRM     Terminal file 
TRN     MKS Source Integrity project usage log 
TTF     TrueType font 
TWF     TabWorks file 
TWW     Tagwrite Template 
TX8     MS-DOS Text 
TXT     Text 
T2T     Sonata CAD modelling software file 


U 

UDF     Windows NT Uniqueness Database File 
ULT     Ultratracker music module (MOD) file 
URL     Internet shortcut 
USE     MKS Source Integrity file 


V 

VBP     Visual Basic Project 
VBW     Microsoft Visual Basic workspace 
VBX     Visual Basic custom control 
VCF     Vevi Configuration File; defines objects for use with Sense8's WorldToolKit 
VDA     Targa bitmap 
VI     Virtual Instrument file from National Instruments LABView product 
VLB     Corel Ventura Library 
VOC     Creative Labs Sound Blaster sound 
VP     Ventura Publisher publication 
VSD     Visio drawing (flow chart or schematic) 
VST     Targa bitmap 
VSW     Visio Workspace file 
VXD     Microsoft Windows virtual device driver 


W 

WAD     Large file for Doom game containing video, player level, and other information 
WAV     Windows Waveform sound 
WB1     QuattroPro for Windows spreadsheet 
WB2     QuattroPro for Windows spreadsheet 
WBK     Microsoft Word Backup 
WBL     Argo WebLoad II upload file 
WCM     WordPerfect Macro 
WDB     Microsoft Works database 
WEB     CorelXara Web document 
WGP     Wild Board Games data file 
WID     Ventura width table 
WIL     WinImage file 
WIZ     Microsoft Word Wizard 
WK1     Lotus 123 versions 1 & 2 spreadsheet 
WK3     Lotus 123 version 3 spreadsheet 
WK4     Lotus 123 version 4 spreadsheet 
WKS     Lotus 123 Worksheet spreadsheet 
WKS     Microsoft Works document 
WLF     Argo WebLoad I upload file 
WLL     Microsoft Word Add-In 
WMF     Windows Metafile 
WOW     Grave Composer music module (MOD) file 
WP     WordPerfect document 
WPW     Novel PerfectWorks document 
WP4     WordPerfect 4 document 
WP5     WordPerfect 5 document 
WP6     WordPerfect 6 document 
WPD     WordPerfect Demo 
WPD     WordPerfect Document 
WPG     WordPerfect Graphic 
WPS     Microsoft Works document 
WPT     WordPerfect Template 
WQ1     QuattroPro/DOS spreadsheet 
WQ2     QuattroPro/DOS version 5 spreadsheet 
WRI     Write document 
WRL     Virtual Reality model 
WS1     WordStar for Windows 1 document 
WS2     WordStar for Windows 2 document 
WS3     WordStar for Windows 3 document 
WS4     WordStar for Windows 4 document 
WS5     WordStar for Windows 5 document 
WS6     WordStar for Windows 6 document 
WS7     WordStar for Windows 7 document 
WSD     WordStar 2000 document 
WVL     Wavelet Compressed Bitmap 


X 

XAR     Corel Xara drawing 
XLA     Microsoft Excel add-in 
XLB     Microsoft Excel toolbar 
XLC     Microsoft Excel chart 
XLD     Microsoft Excel dialogue 
XLK     Microsoft Excel backup 
XLM     Microsoft Excel macro 
XLS     Microsoft Excel worksheet 
XLT     Microsoft Excel template 
XLV     Microsoft Excel VBA module 
XLW     Microsoft Excel workbook / workspace 
XM     FastTracker 2, Digital Tracker music module (MOD) file 
XR1     Epic MegaGames Xargon data file 
XTP     XTree data file 
XY3     XYWrite III document 
XY4     XYWrite IV document 
XYP     XYWrite III Plus document 
XYW     XYWrite for Windows 4.0 document 


Y 

YAL     Arts & Letters clipart library 
YBK     Microsoft Encarta Yearbook 


Z 

Z     Unix Gzip 
ZIP     Zip file 
ZOO     An early compressed file format