Windows Filename Extensions - Huge List

Xtra

FILENAME EXTENSIONS
from: Biglow's "Troubleshooting, Maintaining & Repairing PC's"
2001 EDITION
update as new and missing extisions become available
also there is another one here wikipedia


EXTENSION DEFINITION

#
.$$$____________A generic temporary file (also see TMP)

A
.A______________Assembly source code
.ABK____________CorelDRAW AutoBackup file
.ACL____________CorelDRAW 6 keyboard accelerator
.ACM____________Audio Compression Module (add-on to MSACM.DRV Windows audio driver)
.AD_____________Library module for After Dark screensaver
.ADF____________Adapter Description file
.ADL____________MicroChannel Adapter Description Library file
.ADM____________After Dark MultiModule screensaver
.ADR____________After Dark Randomizer screensaver
.AFM____________Adobe Font Metrics
.AI_____________Adobe Illustrator drawing
.AIF____________Apple Mac AIFF sound
.AIO____________APL I/O
.ALB____________JASC Image Commander album
.ALL____________Arts & Letters Library
.AND____________Add In Utility
.ANI____________Animated Cursor
.ANN____________Annotations
.ANS____________ANSI text
.APL____________APL workspace
.APP____________Application
.ARC____________LH ARC (old version) compressed archive file
.ARJ____________Robert Jung ARJ compressed archive file
.ART____________Xara Studio drawing
.ASC____________ASCII text
.ASD____________WinWord AutoSave
.ASM____________Assembly source code
.ASP____________Active Server Page
.ATT____________AT&T Group 4 bitmap file
.AUX____________Auxiliary file
.AVI____________Microsoft Audio Video Interleave (Video for Windows)
.AWD____________FaxView document

B
.B______________BASIC source code
.B4_____________Helix Nuts and Bolts file
.BAK____________Backup file
.BAS____________BASIC source code
.BAT____________Batch file
.BBL____________Bibliography file
.BFC____________Windows 95 Briefcase document
.BG_____________Backgammon for Windows game
.BGI____________Borland Graphic Interface
.BI_____________Binary file
.BIB____________Bibliography file
.BIN____________Binary file
.BK!____________Backup file
.BLD____________BASIC Bload data
.BM1____________Apogee BioMenace data file
.BMK____________Bookmark file
.BMP____________OS/2 or Windows bitmap file
.BNK____________Ad-lib Instrument ID file
.BS1____________Apogee Blake Stone data file
.BSC____________Boyan Script
.BSV____________BASIC Bsave data

C
.C______________C source code
.CAL____________Calendar schedule data
.CAT____________Catalog file
.CB_____________Microsoft clean boot file
.CBK____________Wave Blaster sound bank file (alternate sets of sounds and instruments)
.CBL____________Cobol source code
.CC_____________C/C++ source code
.CCB____________Visual Basic Animated Button configuration
.CCH____________Corel Chart
.CDA____________CD Audio Track
.CDF____________Comma delimited format
.CDR____________CorelDRAW picture
.CDT____________CorelDRAW template
.CDX____________CorelDRAW compressed drawing
.CFG____________Configuration file
.CGM____________Computer Graphics metafile
.CHK____________CHKDSK information
.CHP____________Ventura Publisher chapter
.CIL____________Clip Gallery download package
.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
.CLI____________Aldus Photostyler clipboard file
.CLP____________Microsoft Windows clipboard viewer data file
.CLS____________Visual Basic Class Module
.CMD____________Command file
.CMF____________Corel metafile
.CMF____________Creative Music file (a Creative Labs format for the Sound Blaster)
.CMP____________Address document
.CMP____________JPEG Bitmap
.CMV____________Corel Move animation
.CMX____________Corel Presentation Exchange image
.CNF____________Configuration file
.CNQ____________Compuworks Design Shop file
.COB____________Cobol source code
.COD____________Code file
.COM____________Command file (program)
.CPD____________Fax Cover document
.CPE____________Fax Cover document
.CPI____________Character Pixel Information
.CPI____________Code Page Information
.CPL____________Control Panel item
.CPL____________Corel Color palette
.CPP____________C++ source 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____________Hypertext Cascading Style Sheet
.CSV____________Comma delimited text
.CT_____________Scitex CT Bitmap
.CUE____________Microsoft Cue Cards data
.CUR____________Windows Cursor file
.CUT____________Dr Halo bitmap
.CV_____________Corel Versions archive
.CVF____________Compressed Volume File

D
.DAT____________Data file
.DAT____________WordPerfect Merge Data
.DBF____________Ashton-Tate dBASE database
.DBG____________Debug info
.DBX____________DataBeam image
.DCS____________Desktop Color Separation file
.DCT____________Dictionary file
.DCX____________Fax image (based on PCX)
.DDE____________Interprocess communications (IPC) protocol to support exchange of commands and data
.DDF____________BTRIEVE database
.DEF____________C++ Definition file
.DEF____________Defaults file
.DEF____________SmartWare II data file
.DEM____________Demo file
.DER____________Certificate file
.DES____________Description file
.DIB____________Device Independent Bitmap (a graphics format)
.DIC____________Dictionary file
.DIF____________Data Interchange Format spreadsheet
.DIF____________Difference file
.DIR____________Directory file
.DLG____________C++ Dialogue Script
.DLL____________Dynamic Link Library (executable code module for Windows)
.DOC____________Microsoft Word document
.DOC____________WordPerfect document
.DOC____________WordStar document
.DOT____________Microsoft Word document template
.DRS____________Driver Resource file
.DRV____________Driver files for Windows
.DRW____________Drawing file
.DRW____________Micrografx Designer/Draw
.DSC____________Description file
.DSQ____________Corel QUERY file
.DTA____________Data file
.DVR____________Device driver file
.DWG____________AutoCAD drawing
.DXF____________AutoDesk Drawing Interchange Format

E
.EMF____________Enhanced Windows metafile
.EML____________E-Mail file
.ENC____________Encoded
.EPS____________Encapsulated PostScript image
.EVY____________Envoy document
.EWL____________Microsoft Encarta document
.EXE____________Executable file (program)

F
.FAV____________Microsoft Outlook navigation bar
.FAX____________Fax bitmaps in CCITT format
.FAX____________FAX Type image
.FH3____________Aldus Freehand 3 drawing
.FLC____________Autodesk hi-resolution animation file
.FLI____________An animation (flick) file format created using Autodesk Animator
.FLT____________Filter file: a DLL used by Corel, or for Aldus and Winword for import
.FMT____________Microsoft Schedule+ print file
.FOG____________Fontographer font
.FON____________System font
.FOR____________Fortran source code
.FOT____________Font-related file
.FP_____________FileMaker Pro file
.FP1____________Flying Pigs for Windows data file
.FP3____________FileMaker Pro file
.FPX____________FlashPix bitmap
.FRM____________Generic form file
.FRM____________Visual Basic form
.FRM____________WordPerfect Merge Form
.FRX____________Visual Basic form stash file

G
.GAL____________Corel Multimedia Manager album
.GED____________Graphic Environment Document (drawing)
.GEM____________GEM metafile
.GEN____________Ventura-generated text file
.GFI____________Genigraphics Graphics Link presentation
.GFX____________Genigraphics Graphics Link presentation
.GFX____________Instant Artist graphics file
.GID____________Windows 95 global index file (containing help status)
.GIF____________Graphic Interchange Format (CompuServe bitmap)
.GIM____________Genigraphics Graphics Link presentation
.GIX____________Genigraphics Graphics Link presentation
.GLY____________Glossary file
.GNA____________Genigraphics Graphics Link presentation
.GNX____________Genigraphics Graphics Link presentation
.GRA____________Microsoft Graph
.GRF____________Graph file
.GRP____________Windows Program Manager Group
.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
.HPJ____________Visual Basic Help Project
.HPP____________C++ program header
.HQX____________Macintosh BinHex 4.0 file
.HST____________History file
.HST____________Host file
.HT_____________HyperTerminal file
.HTM____________Hypertext document file
.HTML___________Hypertext document file

I
.IBK____________Instrument Bank file for the FM chip, specifying parameters for a particular sound
.ICB____________Targa bitmap
.ICO____________Windows Icon file
.IDD____________MIDI Instrument Definition
.IDX____________Index file
.IFF____________Amiga ILBM file
.IGF____________Inset Systems metafile
.IIF____________QuickBooks for Windows interchange file
.IMA____________WinImage file
.IMG____________GEM bitmapped graphics file
.INF____________Windows application Setup information files
.INI____________Windows initialization files that define your Windows environment
.INS____________X-Internet sign-up file
.ISP____________X-Internet sign-up file
.IW_____________Idlewild screensaver

J
.JFF____________JPEG bitmap
.JFIF___________JPEG File Interchange Format
.JIF____________JPEG bitmap
.JN1____________Epic MegaGames Jill of the Jungle data file
.JNK____________Junk
.JPEG___________JPEG bitmap
.JPG____________JPEG bitmap
.JTF____________JPEG bitmap

K
.KDC____________Kodak Photo-Enhancer
.KFX____________KoFax Group 4 image
.KIF____________Knowledge Interchange Format
.KYE____________Kye game data

L
.LBM____________Deluxe Paint bitmap
.LBR____________Library file
.LDB____________Microsoft Access lock file
.LEG____________Legacy document
.LET____________Letter file
.LIB____________Library file
.LOG____________Log file
.LPD____________Helix Nuts and Bolts file
.LRC____________Intel Video Phone file
.LRS____________Language Resource file
.LST____________List file
.LZH____________LH ARC compressed archive
.LZS____________Skyroads data file

M
.M3D____________Corel Motion 3D animation
.MAC____________MacPaint bitmap format
.MAC____________Macro file
.MAD____________Microsoft Access Module
.MAF____________Microsoft Access Form
.MAI____________Mail
.MAK____________Visual Basic or MS Visual C++ Project
.MAM____________Microsoft Access Macro
.MAP____________LInk MAP file
.MAQ____________Microsoft Access Query
.MAR____________Microsoft Access Report
.MAT____________Microsoft Access Table
.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
.MDE____________Microsoft Access MDE file
.MDF____________Menu Definition File
.MDN____________Microsoft Access blank database template
.MDW____________Microsoft Access Workgroup
.MDZ____________Microsoft Access wizard template
.ME_____________Information file (i.e., READ.ME), typically in text format
.MEN____________Menu file
.MET____________Presentation Manager metafile
.MI_____________Miscellaneous
.MIC____________Microsoft Image Composer file
.MID____________MIDI music file
.MMF____________Microsoft Mail File
.MMM____________Microsoft Multimedia Movie
.MNU____________Menu file
.MOD____________A sound file format used with Amiga systems
.MOD____________Microsoft Multiplan spreadsheet
.MOV____________QuickTime for Windows movie
.MPE____________MPEG animation
.MPEG___________MPEG animation
.MPG____________MPEG animation
.MP2____________MPEG Audio Stream, Layer II
.MP3____________MPEG Audio Stream, Layer III
.MSD____________Microsoft Diagnostics report file
.MSG____________Microsoft Mail message
.MSN____________Microsoft Network document
.MSP____________Microsoft Paint bitmap
.MUS____________Music file
.MVB____________Microsoft Multimedia Viewer file

N
.NAP____________NAP metafile vector image
.NDX____________Index file
.NEW____________New file
.NFO____________Information file

O
.OBD____________Microsoft Office Binder or template
.OBJ____________Object file
.OBZ____________Microsoft Office Binder wizard
.OCX____________Visual Basic custom control
.OFN____________Microsoft Office File New file
.OFT____________Microsoft Outlook template
.OGG____________Multimedia Bitstream Container Format
.OLB____________OLE Object Library
.OLD____________Old file (i.e. CONFIG.OLD)
.OLE____________OLE object
.OPT____________Options file
.ORG____________Organizer file
.ORI____________Original
.OUT____________Outline file
.OVL____________Overlay file
.OVR____________Overlay file

P
.P10____________Tektronix Plot 10 drawing
.P65____________Pagemaker 6.5 file
.PAB____________Microsoft Personal Address Book
.PAK____________Packed file
.PAL____________Palette file; used by many programs, generally each with their own format
.PAS____________Pascal source code
.PAT____________Corel Draw pattern
.PAT____________Patch file
.PBK____________Microsoft Phonebook
.PBM____________Portable bitmap file
.PCD____________Kodak Photo CD file
.PCL____________HP Laserjet bitmap
.PCS____________PICS animation file
.PCT____________Macintosh PICT drawing
.PCX____________Zsoft PC Paintbrush picture file
.PDF____________Adobe Acrobat Portable Document Format
.PDX____________Paradox 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)
.PGP____________Program Parameter
.PHO____________Phone list file
.PHP____________Hypertext Preprocessor
.PIC____________Lotus picture/Macintosh drawing/PC Paint bitmap
.PIF____________Program Information File containing information about a non-Windows application
.PIX____________Inset Systems bitmap
.PLL____________Pre-Linked Library file
.PLT____________AutoCAD Plot drawing
.PLT____________HPGL Plotter drawing
.PM5____________Pagemaker 5.0 file
.PM6____________Pagemaker 6.0 file
.PNG____________Paint Shop Pro Browser catalog
.PNG____________Portable Network Graphics bitmap
.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
.PRD____________Printer driver file
.PRE____________Lotus Freelance presentation
.PRF____________Windows Preferences file
.PRG____________Program file
.PRN____________Print Table (space delimited text)
.PRS____________Harvard Graphics for Windows presentation
.PS_____________PostScript file
.PSD____________Adobe Photoshop bitmap
.PST____________Microsoft Outlook Personal Folder file
.PUB____________Microsoft Publisher publication file
.PUB____________Ventura Publisher publication file
.PWD____________Microsoft Pocket Word document
.PWZ____________Microsoft PowerPoint Wizard
.PXL____________Microsoft Pocket Excel spreadsheet

Q
.QAD____________QuickArt document file
.QBW____________QuickBooks for Windows file
.QLB____________Quick Library file
.QRY____________Microsoft Query file
.QT_____________QuickTime Movie format
.QTM____________QuickTime Movie format

R
.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____________Recording file
.REF____________Reference file
.REG____________Registration file
.RES____________Microsoft Visual C++ Resource
.RFT____________RFT-DCA
.RLE____________Run Length Encoding for compressed bitmap files
.RMI____________Windows alternate MIDI synthesized sound format
.ROL____________Adlib sound file format
.ROV____________Rescure Rover data file
.RPT____________Microsoft Visual Basic Crystal Reports file
.RTF____________Rich Text Format document

S
.SAM____________Ami Professional document file
.SAV____________Saved file (i.e., saved game)
.SBI____________Sound Blaster Instrument file
.SBK____________AWE-32 Sound Bank file containing alternate sets of sounds and instruments
.SC2____________Microsoft Schedule+ 7
.SCD____________Matrix/Imapro file
.SCD____________Microsoft Schedule+ 7
.SCH____________Microsoft Schedule+ 1
.SCO____________DL slide image file
.SCP____________Dial-Up Networking Script
.SCR____________Fax image file
.SCR____________Script file, screen saver, or screen capture
.SCT____________Scitex CT bitmap file
.SDF____________Standard Data Format
.SDL____________SmartDraw library file
.SDR____________SmartDraw drawing
.SDT____________SmartDraw template
.SEP____________Tagged Image File Format (TIFF) bitmap
.SHB____________Corel Show presentation
.SHB____________Document shortcut file
.SHG____________Hotspot bitmap file
.SHS____________Shell scrap file
.SHW____________Corel Show presentation file
.SLK____________Symbolic Link (SYLK) spreadsheet
.SMM____________Lotus AmiPro spreadsheet file
.SND____________Raw sound file format—also a sound file used in Mac systems
.SND____________Mac Sound Resource file
.SND____________NeXT sound file
.SPL____________Spell checker
.STY____________Ventura style sheet file
.SUP____________Supplemental file
.SVX____________Amiga 8 sound file
.SWP____________Swap file
.SYM____________Symbol file
.SYS____________System device driver (such as HIMEM.SYS)

T
.TAR____________Tape Archive file
.TAZ____________UNIX Gzip/Tape Archive file
.TBX____________Toolbox file
.TDF____________Trace Definition File
.TDF____________Typeface Definition File
.TEX____________Texture file
.TFM____________Tagged Font Metric
.TGA____________Targa “Tru Color” bitmapped format
.TGZ____________UNIX Gzip/Tape Archive file
.THD____________Thread
.THN____________Graphics Workshop for Windows thumbnail
.THS____________Thesaurus
.TIF____________Tagged Image Format
.TIG____________Tiger file—used by U.S. government to distribute maps
.TLB____________OLE Type Library
.TMP____________Windows temporary file
.TORRENT________used with Azureus
.TRM____________Terminal file
.TST____________Test file
.TTF____________TrueType Font file
.TWF____________TabWorks file
.TWW____________Tagwrite template file
.TX8____________MS-DOS text file
.TXT____________Generic text (ASCII) format

V
.VBP____________Visual Basic Project
.VBX____________Visual Basic Extension or custom control
.VBS____________Virtual Basic script file
.VDA____________Targa bitmap
.VLB____________Corel Ventura Library
.VOC____________Creative voice file created with a Sound Blaster card
.VP_____________Ventura Publisher publication
.VST____________Targa bitmap
.VSW____________Visio Workspace file
.VXD____________Windows virtual device driver file

W
.WAV____________Windows waveform audio file
.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 vector graphics format
.WP_____________WordPerfect 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
.WPW____________Novel PerfectWorks document
.WQ1____________QuattroPro/DOS spreadsheet
.WQ2____________QuattroPro/DOS version 5 spreadsheet
.WRI____________Write document file
.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 file

X
.XAR____________Corel Xara drawing
.XLA____________Microsoft Excel add-in
.XLB____________Microsoft Excel toolbar
.XLC____________Microsoft Excel chart
.XLD____________Microsoft Excel dialog
.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
.XML____________Extensible Markup Language files
.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 (compressed)
.ZIP____________PKZIP archive file

Strider

Not fully Windows Some missing.. But good post.

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