File Extensions

File Extensions

.$$$

Temporary file

.$$A

OS/2 program file

.$$F

OS/2 database file

.$$S

OS/2 spreadsheet file

.

OS/2 planner file

.$DB

DBASE IV temporary file

.$ED

Microsoft C temporary editor file.

.$VM

Microsoft Windows temporary file for virtual managers.

._DD

Norton disk doctor recovery file.

._DM

Nuts n Bolts disk minder recovery file.

.---

File used to backup sys, ini, dat, and other important files from Windows 3.1 and above.

.075

Ventura Publisher 75x75 dpi screen characters

.085

Ventura Publisher 85x85 dpi screen characters

.091

Ventura Publisher 91x91 dpi screen characters

.096

Ventura Publisher 96x96 dpi screen characters

.0B

PageMaker printer font LineDraw enhanced characters.

.1ST

File used by some software manufacturers to represent a file that should be read first before starting the program.

.2GR

File used in Windows 3.x to display the graphics on older 286 and 386 computers.

.386

Virtual machine support files for the 386 enhanced mode.

.3GR

File used in Windows 3.x to display the graphics on later 386, 486 and Pentium computers.

.4SW

4DOS Swap file

A

A

ADA program file or UNIX library

.A3W

MacroMedia Authorware 3.5 file

.ABK

Autobackup file used with Corel Draw 6 and above.

.ABR

Brush file for Adobe Photoshop

.ACT

Adobe Photoshop Color table file.

.AD

After Dark file.

.ADF

Adapter description files.

.ADM

After Dark screen saver module.

.ADR

After Dark randomizer.

.AI

Adobe Illustrator file.

.AIF

Auto Interchange File Format (AIFF) Audio file.

.ANI

Windows 95 / Windows 98 / Windows NT animated mouse cursor file.

.ANS

ANSI text file.

.ARJ

Compressed file can be used with Winzip / Pkzip.

.ASC

ASCII Text file

.ASF

Sort for Advanced Streaming Format, file developed by Microsoft. The .ASF file is generally a movie player and can be open with software such as Windows Media Player.

.ASP

Microsoft FrontPage Active Server Pages. To open these files use your internet browser.

.AVI

Windows Movie file.

B

.BAK

Backup file used for important windows files usually used with the System.ini and the Win.ini.

.BAS

QBasic program and or Visual Basic Module.

.BAT

Batch file that can perform tasks for you in dos, like a macro.

.BFC

Microsoft Windows 95 / Windows 98 Briefcase file.

.BG

Backgammon game file.

.BIN

Translation tables for code pages other than the standard 437.

.BK2

Word Perfect for Windows Backup file

.BK3

Word Perfect for Windows Backup file

.BK4

Word Perfect for Windows Backup file

.BK5

Word Perfect for Windows Backup file

.BK6

Word Perfect for Windows Backup file

.BK7

Word Perfect for Windows Backup file

.BK8

Word Perfect for Windows Backup file

.BK9

Word Perfect for Windows Backup file

.BMP

Graphical Bit Mapped File used in Windows Paintbrush.

.BNK

Sim City Backup

.BPS

Microsoft Works Word Processor File.

.BPT

Corel Draw Bitmap master file

.BV1

Word Perfect for Windows Backup file

.BV2

Word Perfect for Windows Backup file

.BV3

Word Perfect for Windows Backup file

.BV4

Word Perfect for Windows Backup file

.BV5

Word Perfect for Windows Backup file

.BV6

Word Perfect for Windows Backup file

.BV7

Word Perfect for Windows Backup file

.BV8

Word Perfect for Windows Backup file

.BV9

Word Perfect for Windows Backup file

.BWP

Battery Watch pro file.

C

.C

C file used with the C programming language.

.CAB

Cabinet file used in Windows 95 and Windows 98 that contains all the windows files and drivers. Information about how to extract a .CAB file can be found on document CH000363.

.CAL

Windows Calendar, Supercalculator4 file or Supercal spreadsheet.

.CBL

COBOL Program File

.CBT

Computer Based Training files.

.CDA

CD Audio Player Track.

.CDR

Corel Draw Vector file.

.CFB

Comptons Multimedia file

.CFG

Configuration file

.CFL

Corel flowchart file

.CFM

Corel FontMaster file / Cold Fusion Template file / Visual dBASE windows customer form

.CHK

Scandisk file which is used to back up information that scandisk has found to be bad, found in C root. Because the information within these files are corrupted or reported as bad by Scandisk it is perfectly fine to delete these files, providing you are currently not missing any information. Additional information about scandisk can be found on our scandisk page.

.CL

Generic LISP source code.

.CL3

Easy CD Creator layout file.

.CL4

Easy CD Creator layout file.

.CLA

Java Class file.

.CLG

Disk catalog database

.CLK

Corel R.A.V.E. animation file.

.CLL

Crick software clicker file

.CLO

Cloe image

.CLP

Windows Clipboard / Quattro Pro clip art / Clipper 5 compiler script

.CLR

WinEdit Colorization word list / 1st reader binary color screen image / PhotStyler color definition

.CLS

Visual Basic Class module / C++ Class definition

.CMD

Windows Script File also OS/2 command file.

.CMV

Corel Movie file.

.CNT

Help file (.hlp) Contents (and other file contents)

.CPL

Windows 95 / Windows 98 / Windows NT control panel icons.

.CNE

Configuration file that builds .COM files.

.CNF

Configuration file.

.COB

COBOL source code file.

.COD

FORTRAN Compiler program code

.COM

File that can be executed.

.CPE

Fax cover page file

.CPI

Code Page Information or Microsoft Windows applet control panel file

.CPP

C++ source code file.

.CRD

Windows Card file.

.CSV

Comma-Separated Variable file. Used primary with databases and spreadsheets / Image file used with CopuShow

.CUR

Windows Mouse Cursor.

.CVS

Canvas drawing file

.CXX

C++ program file or Zortech C++ file

D

.DAT

Data file, generally associated or extra data for a program to use.

.DB

Paradox database file / Progress database file

.DB2

dBase II file

.DBC

Microsoft Visiual Foxpro database container

.DBF

dBase II,III,III+,IV / LotusWorks database.

.DBK

dBase databse backup / Orcad schematic capture backup file

.DBM

Cold Fusion template

.DBO

dBase IV compiled program file

.DBQ

Paradox memo

.DBT

dBase database text file

.DBV

Flexfile memo field file

.DBW

DataBoss database file

.DBX

Database file / DataBeam Image / MS Visual Foxpro Table

.DEV

Device Driver

.DIF

Document Interchange Format; VisiCalc

.DLL

Dynamic Link Library; Allow executable code modules to be loaded on demand, linked at run time, and unloaded when not needed. Windows uses these files to support foreign languages and international/nonstandard keyboards.

.DMO

Demo file

.DMP

Dump file

.DMD

Visual dBASE data module

.DMF

Delusion/XTracker Digital Music File

.DMS

Compressed archive file

.DOC

Microsoft Word Windows/DOS / LotusWorks word processor Windows/DOS /PF S:First Choice Windows/DOS DOT MS Word Windows/DOS.

.DOS

Text file and DOS Specification Info

.DOT

Microsoft Word Template (Macro).

.DRV

Device driver files that attach the hardware to Windows. The different drivers are system, keyboard, pointing devices, sound, printer/ plotter, network, communications adapter.

.DRW

Micrografx draw/graph files.

.DT_

Macintosh Data File Fork

.DTA

Data file

.DTD

SGML Document definition file

.DTF

Q&A database

.DTM

DigiRekker module

.DTP

SecurDesk! Desktop / Timeworks Publisher Text Document / Pressworks Template file

.DUN

Dialup Networking exported file.

.DX

Document Imaging file / Digital data exchange file

.DXB

Drawing interchange binary file

.DXF

Autocad drawing interchange format file

.DXN

Fujitsu dexNet fax document

.DXR

Macromedia director projected movie file

.DYN

Lotus 1-2-3 file

.DWG

AutoCad Drawing Database

E

.EEB

Button bar for Equation Editor in Word Perfect for Windows

.EFT

CHIWRITER high resolution screen characters

.EGA

EGA screen characters for Ventura Publisher

.ELG

Event List text file used with Prosa

.EMS

Enhanced Menu System configuration file for PC Tools

.EMU

IRMA Workstation for Windows emulation

.ENC

ADW Knowledge Ware Encyclopedia

.END

Corel Draw Arrow Definition file

.ENG

Sprint dictionary file engine

.ENV

Word Perfect for Windows environment file.

.EPG

Exported PaGe file used with DynaVox

.EPS

Encapsulated Postscript, with embedded TIFF preview images.

.EQN

Word Perfect for Windows Equation file

.ERD

Entity Relation Diagram graphic file

.ERM

Entity Relation Diagram model file

.ERR

Error log file

.ESH

Extended Shell Batch file

.EVT

Event file scheduler file for PC Tools

.EX3

Device driver for Harvard graphics 3.0

.EXC

QEMM exclude file from optimization file or Rexx program file

.EXE

Executable file.

.EXT

Extension file for Norton Commander

F

.FDF

Adobe Acrobat Forms Document.

.FF

AGFA CompuGraphics outline font description.

.FFA

Microsoft Fast Find file.

.FFF

GUS PnP bank / defFax fax document

.FFL

Microsoft Fast Find file / PrintMaster Gold form file

.FFO

Microsoft Fast Find file

.FFT

DCA/FFT final form text

.FFX

Microsoft Fast Find file

.FON

Font files to support display and output devices.

.FR3

dBase IV renamed dBase III+ form

.FRF

FontMonger Font

.FRG

dBase IV uncompiled report

.FRK

Compressed zip file used with Apple Macinotsh computers.

.FRM

Form file used with various programs / Microsoft Visual Basic Form / FrameMaker document / FrameBuilder file / Oracle executable form / Word Perfect Merge form / DataCAD symbol report file

.FRO

dBase IV compiled report / FormFlow file

.FRP

PerForm Pro Plus Form

.FRS

WordPerfect graphics driver

.FRT

FoxPro report file

.FRX

Microsoft Visual basic binary form file / FoxPro report file

.FRZ

FormFlow file

G

.GIF

CompuServe Graphics Interchange Format.

.GR2

286 grabbers that specify which font to use with DOS and Windows.

.GR3

386 grabbers that specify which font to use with DOS and Windows.

.GRA

Microsoft Flight simulator graphics file

.GRB

Microsoft MS-DOS shell monitor

.GRF

Micrografx draw/graph files.

.GRP

Microsoft Program Group.

.GZ

Compressed Archive file for GZip

H

.HBK

Mathcad handbook file

.HDL

Procomm Plus alternate download file listing

.HDR

Procomm Plus message header

.HDX

Help index

.HEX

Hex dump

.HFI

GEM HP font info

.HGL

HP graphics language graphic

.HH

C++ Header

.HHH

Precompiled Header for Power C

.HHP

Help data for Procomm Plus

.HLP

Files that contain the Help feature used in windows, cannot be read from DOS.

.HQX

Apple Macintosh Binhex text conversion file.

.HSQ

Data files associated with the Qaz Trojan.

.HSS

Photoshop Hue/Saturation information.

.HST

History file / Procomm Plus History File / Host file.

.HTA

Hypertext Application (run applications from HTML document).

.HTM

Web page files containing HTML or other information found on the Internet.

I

.ICA

Citrix file / IOCA graphics file

.ICB

Targa Bitmap

.ICC

Kodak printer image

.ICE

Archive file

.ICL

Icon library file

.ICM

Image Color Matching profile file

.ICN

Microsoft Windows Icon Manager.

.ICO

Microsoft Windows Icondraw / Icon.

.ID

Disk identification file.

.IDB

Microsoft developer intermediate file, used with Microsoft Visual Studio

.IDD

MIDI instruments definition

.IDE

Integrated Development Environment configuration file

.IDF

MIDI instruments drivers file

.IDQ

Internet data query file

.IDX

Index file

.IFF

IFF/LBM (Amiga) used by Computer Eyes frame grabber.

.IMG

GEM/IMG (Digital Research) or Ventura Publisher bitmap graphic

.INF

Information file that contains customization options.

.INI

Files that initialize Windows and Windows apps.

.IPF

Installer Script File / OS/2 online documentation for Microsoft source files.

.ISO

Compressed file used for an exact duplicate of a CD. .ISO files can be extracted or opened such programs as WinImage that can be found on our shareware download section.

.IWA

IBM Writing Assistant Text file.

J

.JAS

Graphic

.JPG

Graphic commonly used on the Internet and capable of being opened by most modern image editors.

.JS

JavaScript file.

.JSB

Henter-Joyce Jaws script binary file

.JSD

eFAX jet suite document

.JSE

JScript encoded script file

.JSH

Henter-Joyce Jaws script header file

.JSL

PaintShop pro file

.JSM

Henter-Joyce Jaws script message file

.JSP

Java server page

.JSS

Henter-Joyce Jaws script source file

.JT

JT fax file

.JTF

JPEG tagged Interchange format file

.JTK

Sun Java toolkit file

.JTP

JetForm file

.JW

Justwrite text file

.JWL

Justwrite text file library

.JZZ

Jazz spreadsheet

K

.KAR

Karaoke File used with some audio players.

L

.LGC

Program Use Log File (for Windows Program Use Optimization).

.LGO

Contains the code for displaying the screen logo.

.LOG

Contains the process of certain steps, such as when running scandisk it will usually keep a scandisk.log of what occurred.

.LNK

HTML link file used with Microsoft Internet Explorer.

.LWP

Lotus Wordpro 96/97 file.

M

.MAC

Macintosh macpaint files.

.MBX

Microsoft Outlook Express mailbox file.

.MD

Compressed Archive file

.MDA

Microsoft Access Add-in / Microsoft Access 2 Workgroup.

.MDB

Microsoft Access Database / Microsoft Access Application.

.MDE

Microsoft Access Database File

.MDF

Menu definition file

.MDL

Digitrakker Music Module / Rational Rose / Quake model file

.MDM

Telix Modem Definition

.MDN

Microsoft Access Blank Database Template

.MDP

Microsoft Developer Studio Project

.MDT

Microsoft Access Add-in Data

.MDW

Microsoft Access Workgroup Information

.MDX

dBase IV Multiple Index

.MDZ

Microsoft Access Wizard Template

.MEB

WordPerfect Macro Editor bottom overflow file

.MED

WordPerfect Macro Editor delete save / OctaMed tracker module

.MEM

WordPerfect Macro Editor macro / Memory File of variables

.MID

Midi orchestra files that are used to play with midi sounds built within the sound card.

.MIX

Power C object file / Multiplayer Picture file (Microsoft Photodraw 2000 & Microsoft Picture It!) / Command & Conquer Movie/Sound file

.MOD

Winoldap files that support (with grabbers) data exchange between DOS apps and Windows apps.

.MOV

File used with Quick Time to display a move.

.MP1

MPEG audio stream, layer I

.MP2

MPEG audio stream, layer II

.MP3

MPEG audio stream, layer III; High compressed audio files generally used to record audio tracks and store them in a decent sized file available for playback. See our MP3 page for additional information.

.MPG

MPEG movie file.

.MSN

Microsoft Network document / Decent mission file

.MTF

Windows metafile.

.MTH

Derive Math file

.MTM

Sound file / MultiTracker music module

.MTV

Picture file

.MTW

Minitab data file

.MU

Quattro menu

.MUL

Ultima Online game

.MUP

Music publisher file

.MUS

Audio file

.MVB

Database file / Microsoft multimedia viewer file

.MVE

Interplay video file

.MVF

Movie stop frame file

.MWP

Lotus Wordpro 97 smartmaster file

.MXD

ArcInfo map file

.MXT

Microsoft C Datafile

.MYD

Make your point presentation file.

N

.N64

Nintendo 64 Emulator ROM image.

.NA2

Netscape Communicator address book.

.NAB

Novell Groupwise address book

.NAP

Napster Music security definition file.

.NDF

NeoPlanet Browser file

.NDX

Indexed file for most databases.

.NES

Nintendo Entertainment system ROM image.

.NIL

Norton guide online documentation

.NGF

Enterasys Networks NetSight file.

.NHF

Nero HFS-CD compilation or a general Nero file

.NIL

Norton icon lybrary file.