Elf Qrin's Lair

File formats and extensions
v1.3 r25jul2000
Collected by Elf Qrin


000-999 Used to number old (backup) versions of files (for example, CONFIG.SYS when changed by an installation program); also used to number related data files for multiple users of a small-scale PC application 
12M Lotus 123 97 Smartmaster file 
123 Lotus 123 97 file 
2GR and 3GR VGA Graphics driver/configuration files under Windows
386 A file for use in an 80386 or higher microprocessor 
669 Composer 669, Unis Composer music mod file 
#01 and higher A method of numbering picture files for a roll of film that has been scanned for computer presentation 
$$$ Used by OS/2 to keep track of archived files 
@@@ Screen files used in the installation and instruction on use of such applications as Microsoft Codeview for C 


ABK AMOS Basic data file
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 
AIFC Similar to AIF 
AIFF Similar to AIF 
AIS ACDSee Image Sequence file 
ALB JASC Image Commander album 
ALL Arts & Letters Library
AMOS AMOS Basic code
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 
ARI Aristotle audio file 
ARJ Robert Jung ARJ compressed archive 
ART Xara Studio drawing 
ART Canon Crayola art file 
ASA Microsoft Visual InterDev file 
ASD WinWord AutoSave 
ASF Microsoft Advanced Streaming Format file 
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 
ASX Cheyenne Backup script 
ASX Microsoft Advanced Streaming Redirector file 
ATT AT&T Group 4 bitmap 
AU UNIX sound file 
AVI Microsoft Video for Windows movie 
AWD FaxView document 


BAK Backup file 
BAT Batch file 
BFC Windows 95 Briefcase document 
BG Backgammon for Windows game 
BI Binary file 
BIF GroupWise initialization file 
BIN Binary file 
BK and BK$ 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
BOT LinkBot document
BPX Lumena BigPix
BRX A file for browsing an index of multimedia options  
BSP Quake map 
BS1 Apogee Blake Stone data file 
BS_ Microsoft Bookshelf Find Menu shell extension 
BTM Batch file used by Norton Utilities 
BUN CakeWalk Audio Bundle file (a MIDI program)
BUP Backup file (rare)
B4 Helix Nuts and Bolts file 


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) 
CCO CyberChat data file 
CCT Macromedia Director Shockwave cast
CCX CorelDraw file
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 
CER Certificate file (MIME x-x509-ca-cert) 
CFB Comptons Multimedia file 
CFG Configuration file
CGA CGA (Color Graphics Adapter) graphics data
CGI Common Gateway Interface script file 
CGM Computer Graphics Metafile 
CH OS/2 configuration file
CHA mIRC Chat file
CHA Character data file in some games (example: Diablo)
CHK File fragments saved by Windows Disk Defragmenter or ScanDisk 
CHM Compiled HTML file 
CHP Ventura Publisher chapter 
CHT ChartViewer file 
CHT Harvard Graphics vector file 
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
CLB Corel Library
CLC Corel Catalog
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 with varying internal formats 
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 Cobol code
COB trueSpace2 object 
COD Microsoft C compiler output as displayable machine language/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 
CSS Cascading Style Sheet file (MIME) 
CST Macromedia Director "Cast" (resource) file 
CSV Comma-separated values file 
CT Scitex CT Bitmap 
CT A graphic file associated with the Paint Shop Pro Graphic Editor 
CTL Used in general to mean a file containing control information. FAXWorks uses it to keep information about each fax sent and received.
CTY SimCity's city
CUE Microsoft Cue Cards data 
CUR Windows Cursor 
CUT Dr Halo bitmap 
CV Corel Versions archive 
CV Microsoft CodeView information screen
CVP Kodak file
CWK Claris Works data file 
CWS Claris Works template 
CXT Macromedia Director protected (not editable) "Cast" (resource) file 
CXX C++ source code file 


DAT Data file 
DAT WordPerfect Merge Data 
DBF Ashton-Tate dBASE database 
DBX DataBeam image 
DCR Shockwave file 
DCS Desktop 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 Documentation 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
DQY Microsoft Excel ODBC query 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 
DTF Symantec Q&A relational database data file 
DUN Microsoft Dial-up Networking Export file 
DV Digital video file (MIME) 
DWD DiamondWare digitized file 
DWG AutoCAD drawing, or older Generic CADD drawing format 
DXF Drawing Interchange (eXchange) format,a text representation of the binary DWG format 
DXR Macromedia Director protected (not editable) movie file 


EGA EGA (Enhanced Graphics Adapter) graphics data
EMF Enhanced Windows Metafile 
EML Microsoft Outlook Express mail message (MIME RFC 822) 
ENC Encore file 
EPS Encapsulated PostScript image 
ER1 ERWin file 
ERX ERWin file 
EVY Envoy document 
EWL Microsoft Encarta document 
EXC Microsoft Word Exclusion Dictionary 
EXE Executable file (program)


F77 FORTRAN file 
F90 FORTRAN file 
FAR Farandole Composer music module (MOD) file 
FAV Microsoft Outlook navigation bar 
FAX FAX Type image 
FCL Cyber Audio Library link file 
FDF Adobe Acrobat Forms Document file 
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 
FML File Mirror List (GetRight) 
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 
FND Microsoft Explorer Saved Search file (Find applet) 
FNG Font group file (Font Navigator) 
FOG Fontographer font 
FON System font
FON ProComm Plus call report
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 
FTS Full-Text Search index file resulting from using Find in the Windows help system Can be erased; will be rebuilt when needed 
FW3 Framework III file 
FW4 Framework IV file 


GAL Corel Multimedia Manager album 
GCD Generic (TM) CADD drawing (later versions) 
GCP Ground Control Point file used in image processing of remote sensing data often to form map projections. CHIPS (CopenHagen Image Processing System) uses these files. 
GED Graphic Environment Document (drawing) 
GEM GEM metafile
GEM Ventura/GEM drawing
GEN Ventura-Generated text file 
GetRight GetRight Unfinished-Download 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 
GKS Gravis GripKey document 
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. CHIPS (CopenHagen Image Processing System) uses these files 
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 C program header
HDM HDML document
HDML HDML document
HED HighEdit document 
HEL Microsoft Hellbender saved game 
HEX Macintosh BinHex 2.0 file 
HGL HP Graphics Language drawing
HI High score table
HIG High score table
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 Mark-up Language document 
HTML Hypertext Mark-up Language document 
HTT Microsoft Hypertext Template 
HTX Extended HTML template 


ICA Citrix file 
ICB Targa bitmap 
ICL Icon Library file (an industry standard) 
ICM Image Color Matching profile file 
ICO Windows Icon 
IDD MIDI Instrument Definition 
IDF MIDI Instrument Definition (Windows 95 required file) 
IDQ Internet Data Query file 
IDX Symantec Q&A relational database index file 
IFF Amiga Interchange File Format 
IGF Inset Systems metafile 
IIF QuickBooks for Windows interchange file 
ILBM A bitmap (graphic image) file 
IMA WinImage file 
IMG GEM paint image 
INC Assembler language or Active Server include file 
INF Information file 
INFO Amiga icon 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 
IOF Findit document 
IQY Microsoft Internet Inquiry 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 
ITS Internet document set (possibly a Microsoft file) 
IW Idlewild screensaver 


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 compressed bitmap 
JIF JPEG compressed bitmap 
JFIF JPEG compressed bitmap 
JMP SAS JMPDiscovery chart-to-statistics file 
JN1 Epic MegaGames Jill of the Jungle data file 
JPE JPEG file 
JPEG JPEG ("Joint Picture Expert Group") compressed bitmap 
JPG JPEG compressed bitmap 
JS JavaScript source code 
JTF JPEG bitmap 


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


LBM Deluxe Paint bitmap (Amiga IFF-ILBM file)
LDB Microsoft Access lock file 
LEG Legacy document 
LES Logitech Entertainment system game profiles (same as REG file) 
LHA Alternate file suffix for LZH 
LIB Library 
LIS Output file produced by a Structured Query Reporting (SQR) program
LLC LapLink saved connection file
LNK Windows shortcut file 
LOG Log file 
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 


M1V MPEG-related file (MIME type 'mpeg') 
M3D Corel Motion 3D animation 
M3U MPEG URL (MIME audio file) 
MAC MacPaint image 
MAD Microsoft Access module 
MAF Microsoft Access Form
MAG Magic Mail Monitor mailbox file
MAGIC Magic Mail Monitor mailbox file
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
MHT MHTML document (MIME) 
MHTM MHTML document (MIME) 
MHTML MHTML document (MIME) 
MI Miscellaneous 
MIC Microsoft Image Composer file 
MID MIDI music
MMC Media Catalog
MMF Microsoft Mail File 
MMM Microsoft Multimedia Movie 
MOD Noise Tracker, FastTracker, StarTrekker (etc.) music module file 
MOD Microsoft Multiplan spreadsheet 
MOV QuickTime for Windows movie 
MPA MPEG-related file (MIME type 'mpeg') 
MPE MPEG animation 
MPEG MPEG ("Motion-PEG") animation 
MPG MPEG animation 
MPP Microsoft Project file 
MPP CAD drawing file format 
MP2 MPEG Audio Layer 2 file (MIME video file) 
MP3 MPEG Audio Layer 3 (AC3) file
MSG Message
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
MVX Mixer file
MWF Promotion animation
MWP Lotus Wordpro 97 Smartmaster file 


NAP NAP Metafile Vector image 
NCB Microsoft Developer Studio file 
NFO Information file
NIL Norton Icon Library file (EasyIcons-compatible) 
NLU Norton Live Update E-Mail Trigger file 
NSF Lotus Notes database 
NST Noise Tracker music module (MOD) file 
NTF Lotus Notes database template 
NWS Microsoft OutlookExpress news message (MIME RFC822) 


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
OLD Old version of a file
OLE OLE object 
OPT Microsoft Developer Studio file
OQY Microsoft Excel Olap query file
ORG Lotus Organiser file 
OR2 Lotus Organiser 2 file 
OR3 Lotus Organiser 97 file 
OSS Microsoft Office Search file 
OST Microsoft Exchange Offline file 
OTL Super NoteTab template file (Fookes)


P10 Tektronix Plot 10 drawing 
P65 Pagemaker 6.5 file 
P7C Digital ID file (MIME)
P7M PKCS#7 Digital ID file (MIME)
PAB Microsoft Personal Address Book 
PAK Quake WAD file 
PAL Windows colour palette 
PAS Pascal source code (Borland) 
PAT Corel Draw pattern 
PCP Symantec Live Update Pro file 
PBK Microsoft Phonebook 
PBM Portable Bitmap 
PCD Kodak Photo-CD image 
PCD P-Code compiled test scripts as in Microsoft Tst and Microsoft Visual Test 
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 
PDB 3Com Palmpilot database file 
PDF Package Definition File from Microsoft Systems Management Server Verifies installed packages when performing an inventory scan of a client 
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)
PHP PHP generated document
PIC PC Paint bitmap 
PIC Lotus picture 
PIC Macintosh PICT drawing 
PICT Mac PICT image file 
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
PIX Island Graphics
PJ MKS Source Integrity file 
PKG Microsoft Developer Studio application extension (similar to a DLL file) 
PL Perl program 
PLS MPEG PLayList file (used by WinAmp) 
PLT HPGL Plotter drawing 
PLT AutoCAD Plot drawing 
PM5 Pagemaker 5.0 file 
PM6 Pagemaker 6.0 file 
PNG Portable Network Graphics bitmap 
PNG Paint Shop Pro Browser catalogue 
PNT MacPaint graphic file 
PNTG 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 
PRC 3Com Palmpilot resource (text or program) file 
PRE Lotus Freelance presentation 
PRF Windows system file 
PRF Macromedia Director settings file 
PRN Print Table (space delimited text) 
PRS Harvard Graphics for Windows presentation 
PRT A print-formatted file 
PRZ Lotus Freelance Graphics 97 file 
PS Postscript Interpreted drawing 
PSD Adobe Photoshop bitmap 
PST Microsoft Outlook Personal Folder File
PT Kodak Precision Transform
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 


QAD PF QuickArt Document 
QBW QuickBooks for Windows file 
QDT Quick Books data file from the Quicken UK Accountancy/Tax/Invoice program 
QIC Microsoft Backup file 
QIF QuickTime-related image (MIME) 
QLB Quick Library 
QRY Microsoft Query 
QST Quake Spy Tab file 
QT QuickTime Movie 
QTI QuickTime-related image 
QTIF QuickTime-related image 
QTM QuickTime Movie 
QTP QuickTime Preferences file 
QTS Mac PICT image file 
QTS QuickTime-related image 
QTX QuickTime-related image 
QXD Quark XPress file 


R Pegasus Mail resource file 
RA Real Audio sound 
RAM Real Audio sound 
RAR RAR compressed archive (Eugene Roshall's format) 
RAS Sun Raster Images bitmap 
RAW Raw File Format (bitmap or generic data)
RC Microsoft Visual C++ Resource Script 
RDF Resource Description Framework file (related to XML and metadata) 
REC Recorder macro 
REG Registration file 
RES Microsoft Visual C++ Resource 
RFT Revisable Form Text (part of IBM's DCA or Document Content Architecture) 
RLE Run-Length Encoded bitmap 
RM Real Audio video file 
RMD Microsoft RegMaid document 
RMF Rich Map Format (used by 3-D game editors to store a map) 
RMI MIDI music
RMM Real Player sound file
RNX Real Player sound file
ROV Rescue Rover data file 
RPT Microsoft Visual Basic Crystal Reports file 
RTF Rich Text Format document 
RTM Real Tracker music module (MOD) file 
RTS RealAudio's RTSL document
RV Real Video clip
RVP Microsoft Scan Configuration file (MIME) 


SAM Ami Professional document 
SAV Saved game file 
SBK Creative Labs Soundfont 1.0 Bank file (Soundblaster) 
SBL Shockwave Flash object 
SCC Microsoft Source Safe file 
SCD Matrix/Imapro SCODL slide image 
SCD Microsoft Schedule+ 7 
SCF Windows Explorer command file 
SCH Microsoft Schedule+ 1 
SCN trueSpace2 scene
SCO High score table
SCP Dial-Up Networking Script 
SCR Windows screensaver 
SCR Fax image 
SCT Scitex CT bitmap 
SC2 Microsoft Schedule+ 7 
SD2 Sound Designer 2 file 
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 6.0 4 color
SES Cood Edit Session file (common digital audio editor file)
SET Setup file
SFX RAR self-extracting archive 
SF2 Creative Labs Soundfont 2.0 Bank file (Soundblaster) 
SHAR SHell ARchive (mostly Unix/Linux)
SHB Corel Show presentation background
SHB Document shortcut file 
SHG Hotspot bitmap 
SHS Shell scrap file
SHT S-HTML document
SHTML S-HTML document
SHW Corel Show presentation 
SIT Stuffit archive of Mac files 
SKL Macromedia Director resource file 
SL PACT's Save Layout extension 
SLK Symbolic Link (SYLK) spreadsheet
SMI Real Player sound file
SMIL Real Player sound file
SND NeXT sound 
SND Mac Sound Resource 
SQC Structured Query Language (SQR) common code file 
SQR Structured Query Language (SQR) program file
SPL Shockwave Flash Object
SSM Real Player Standard Streaming Metafile
STM Scream Tracker music module (MOD) file 
STY Ventura Publisher style sheet 
SVX Amiga 8SVX sound
SWF Shockwave Flash Object
SYS System file 
SWA Shockwave audio file in Macromedia Director (an MP3 file) 
SWF Shockwave Flash object 
S3M Scream Tracker 3 music module (MOD) file 


TAR Tape Archive 
TAZ Unix Gzip/Tape Archive 
TEX Texture file 
TGA Targa bitmap 
TGZ Unix Gzip/Tape Archive 
THEME Windows 95 Desktop 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 
TPL CakeWalk Audio Template 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 
TZ Old compression format file 
T2T Sonata CAD modelling software file 


UDF Windows NT Uniqueness Database File
UDL Microsoft Data Link
ULT Ultratracker music module (MOD) file 
URL Internet shortcut
URLS GetRight URL list
USE MKS Source Integrity file
USR User file (preferences)
UU UU-encoded file 
UUE UU-encoded file 


VBA VBase file 
VBP Visual Basic Project 
VBW Microsoft Visual Basic workspace 
VBX Visual Basic custom control 
VCE NMS file...audio-related, used by Cool Edit 
VCF Vevi Configuration File; defines objects for use with Sense8's WorldToolKit 
VDA Targa bitmap
VGA VGA (Video Graphics Array) graphics data
VI Virtual Instrument file from National Instruments LABView product 
VIR File identified as a virus-infected file by Norton AntiVirus and possibly others 
VIV VivoActive Player Streaming Video file 
VLB Corel Ventura Library 
VOC Creative Labs Sound Blaster sound 
VP Ventura Publisher publication 
VQE Yamaha Sound-VQ Locator file 
VQF Yamaha Sound-VQ file (possible emerging standard) 
VQL Yamah Sound-VQ Locator file 
VSD Visio drawing (flow chart or schematic) 
VSL Download List file (GetRight) 
VST Targa bitmap 
VSW Visio Workspace file 
VXD Microsoft Windows virtual device driver 


WAB Microsoft Outlook file 
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
WIN Targa clip
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
WML WML document
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 (bitmap or vector)
WPS Microsoft Works document 
WPT WordPerfect Template 
WQ1 QuattroPro/DOS spreadsheet 
WQ2 QuattroPro/DOS version 5 spreadsheet 
WRI Write document 
WRL Virtual Reality model 
WRZ Another VRML fileject 
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 
WWL Microsoft Word add-in file 


XAR Corel Xara drawing 
XBM A MIME 'xbitmap' image 
XIF Wang imaging file (comes with Windows 95) 
XLA Microsoft Excel add-in 
XLB Microsoft Excel toolbar 
XLC Microsoft Excel chart 
XLD Microsoft Excel dialogue 
XLK Microsoft Excel backup 
XLL Microsoft Excel add-in file 
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
XML eXtensible Mark-up Language document
XNK Microsoft Exchange shortcut file 
XR1 Epic MegaGames Xargon data file 
XTP XTree data file 
XWF Yamaha XG Works file (MIDI sequencing) 
XY3 XYWrite III document 
XY4 XYWrite IV document 
XYP XYWrite III Plus document 
XYW XYWrite for Windows 4.0 document 
X16 Macromedia Extra (program extension), 16 bit 
X32 Macromedia Extra (program extension), 32 bit 


YAL Arts & Letters clipart library 
YBK Microsoft Encarta Yearbook 


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

Issued on Elf Qrin's Hacking Lab
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