Complete List Of Extensions

We use computer and sometimes we receive a file from our friends or download from the internet but we are not sure about the file extension. We rush to others to find the meaning of this file extension . So here I tried out to find a huge list of file extension used by computer programs or computer hardware. If I forget to list any other file extension then let me know I will update my list.

A

• a - library (unix)
• .ad - screen saver data (AfterDark)
• .adi - graphics (AutoCAD)
• .adl - MCA adapter description library (QEMM)
• .afi - Truevision bitmap graphics
• .afm - Type 1 font metric ASCII data for font installer (ATM - many)
• .all - format file for working pages (Always)
• .all - general printer information (WordPerfect for Win)
• .ani - animation (Presidio - many)
• .anm - animation (Deluxe Paint Animator)
• .ans - ANSI graphics (character animation)
• .ans - ASCII text ANSI character set (NewWave Write)
• .asc - ASCII text file
• .avi - Audio Video Interleaved animation file (Video for Windows)

B

• .bak - backup file
• .bas - BASIC source code file
• .bat - batch file (DOS)
• .bbm - brush (Deluxe Paint)
• .bbs - Bulletin Board System announce or text info file
• .bch - batch process object file (dBASE Application Generator)
• .bcp - Borland C++ makefile
• .bdf - Bitmap Distribution Format font file (X11)
• .bga - bitmap graphics
• .bib - bibliography (ASCII)
• .bib - database - not compatible with TeX format (Papyrus)
• .bib - literature database (TeX/BibTeX)
• .bif - Binary Image Format b&w graphics (Image Capture board)
• .bin - binary file
• .bio - OS2 BIOS
• .bit - bitmap X11
• .bm - BitMap graphics
• .bmk - Help Bookmarks (Windows 3.x)
• .bmp - BitMaP graphics (PC Paintbrush - many)
• .bpt - bitmap fills file (CorelDRAW)
• .btm - Batch To Memory batch file (4DOS)
• .bup - backup file

C

• .c - C source code file
• .c - compressed unix file archive created by COMPACT
• .c++ - C++ source code file
• .cal - calendar file (Windows 3.x)
• .cal - spreatsheet (SuperCalc)
• .cbl - COBOL source code file
• .cbm - compiled bitmap graphics (XLib)
• .cbt - Computer Based Training (many)
• .cc - C++ source code file
• .ceg - bitmap graphics (Tempra Show - Edsun Continuous Edge Graphics)
• .cga - CGA display font (Ventura Publisher)
• .chk - recovered data (DOS CHKDSK)
• .chk - temporary file (WordPerfect for Win)
• .clp - clip art graphics (Quattro Pro)
• .clp - clipboard file (Windows 3.x)
• .cls - C++ class definition file
• .cmd - batch file (OS/2)
• .cmd - command (dBASE - Waffle)
• .cmd - external command menu (1st Reader)
• .cpp - C++ source code file
• .cpp - presentation (CA-Cricket Presents)
• .cpt - compressed Mac file archive created by COMPACT PRO (ext-pc.zip)
• .cur - cursor image file (Windows 3.x)

D

• .dat - data file in special format or ASCII
• .dbd - debug info (Clarion Modula-2)
• .dbg - symbolic debugging information (MS C/C++)
• .dcf - disk image file
• .dd - compressed Macintosh file archive created by DISKDOUBLER
• .deb - DEBUG script (DOS Debug)
• .def - defaults - definitions
• .dem - demonstration
• .dem - graphics (VistaPro)
• .dgs - diagnostics
• .dic - dictionary
• .dir - directory file (VAX)
• .diz - description file (Description In Zip)
• .dlg - dialog resource script file (MS Windows SDK)
• .dll - Dynamic Link Library (Windows 3.x - OS/2)
• .dll - export/import filter (CorelDRAW)
• .dmp - dump file (eg. screen or memory)
• .doc - document text file
• .dos - network driver (eg. pkt_dis.dos)
• .dos - text file containing DOS specific info
• .drv - device driver eg. for printer
• .dsk - project desktop file (Borland C++ - Turbo Pascal)
• .dss - screensaver file (DCC)

E

• .ega - EGA display font (Ventura Publisher)
• .emu - terminal emulation data (BITCOM)
• .env - Enveloper macro (WOPR)
• .env - environment file (WordPerfect for Win)
• .err - error log
• .err - error messages for command line compilers
• .esh - Extended Shell batch file
• .exc - REXX source code file (VM/CMS)
• .exc - exclude file for Optimize (do not process) (QEMM)
• .exe - directly executable program (DOS)
• .exm - MSDOS executable, system-manager compliant (HP calculator)
• .ext - extension file (Norton Commander)

F

• .fac - FACE graphics
• .faq - Frequently Asked Questions text file
• .fax - fax (raster graphics) (most Fax programs)
• .fdw - form (F3 Design and Mapping)
• .fix - patch file
• .frm - form (Visual Basic)
• .ftp - configuration (FTP Software PC/TCP)
• .fx - on-line guide (FastLynx)
• .fxd - phonebook (FAXit)

G

• .gbl - global definitions (VAXTPU editor)
• .gfb - compressed GIF image created by GIFBLAST (gifblast.exe)
• .gft - font (NeoPaint)
• .gif - Graphics Interchange Format bitmap graphics (CompuShow)
• .gly - glossary (MS Word)
• .gph - graph (Lotus 1-2-3/G)
• .gr2 - screen driver (Windows 3.x)
• .grb - MS-DOS Shell Monitor file (MS-DOS 5)
• .grp - group file (Windows 3.x - Papyrus)

H

• .hlp - help information
• .hof - Hall Of Fame (game scores)
• .hp8 - ASCII text HP Roman8 character set (NewWave Write)
• .htm - HTML document (Mosaic)
• .htx - Hypertext file

I

• .iax - bitmap graphics (IBM Image Access eXecutive)
• .ibm - compressed file archive created by ARCHDOS (Internal IBM only)
• .icn - ICON source code file
• .ico - icon (Windows 3.x)
• .id - disk identification file
• .ifs - system file (OS/2) hpfs.ifs
• .img - bitmap graphics (Ventura Publisher - GEM Paint)
• .inc - include file (several programming languages)
• .inf - information text file (ASCII)
• .inf - install script
• .ini - initialization file
• .ins - (WordPerfect) wp51.ins
• .ins - installation script (1st Reader)

J

• .jas - graphics
• .jbd - datafile (SigmaScan)
• .jpc - graphics (Japan PIC)
• .jpg - JPEG Joint Photography Experts Group format bitmap graphics
• .jtf - graphics (TIFF file with JPEG compression)

K

• .key - security file eg. Shareware Registration info
• .kps - IBM KIPS bitmap graphics
• .kyb - keyboard mapping (FTP Software PC/TCP)

L

• .lbm - bitmap graphics (DeluxePaint)
• .lbm - linear bitmap graphics (XLib)
• .lcl - (FTP Software PC/TCP)
• .ldb - (MS Access)
• .lgo - startup logo code (Windows 3.x)
• .lib - library file (several programming languages)
• .lis - listing (VAX)
• .log - log file
• .lpc - printer driver (TEKO)

M

• .m3d - 3D animation macro
• .mac - bitmap graphics (Macintosh MacPaint)
• .mac - macro
• .mai - mail (VAX)
• .mak - makefile
• .mak - project file (Visual Basic)
• .man - command manual
• .map - color palette
• .map - format data (Micrografx Picture Publisher)
• .map - linker map file
• .map - map (Atlas MapMaker)
• .map - network map (AccView)
• .mbx - mailbox data (ZERBERUS)
• .mci - MCI command script (Media Control Interface)
• .mcp - printer driver (Mathcad)
• .mcw - text file (MacWrite II)
• .mdm - modem definition (TELIX)
• .meu - menu group (DOS Shell)
• .mid - standard MIDI file (music synthetizers)
• .mke - makefile (MS Windows SDK)
• .mod - MODULA-2 source code file (Clarion Modula-2)
• .mod - Windows kernel module
• .mon - monitor description (ReadMail)
• .mov - movie (AutoCAD AutoFlix)
• .mp2 - MPEG audio file (xing)
• .mpc - calender file (MS Project)
• .mpg - MPEG animation
• .msg - message
• .msp - bitmap graphics (Microsoft Paint)
• .mst - setup script (MS Windows SDK)
• .mth - math file (Derive)
• .mtm - MultiTracker Module music
• .mtw - datafile (Minitab)
• .mu - menu (Quattro Pro)
• .mus - sound file (MusicTime)
• .mvf - stop frame file (AutoCAD AutoFlix)
• .mvi - movie command file (AutoCAD AutoFlix)
• .mvw - log file (Saber LAN)
• .mxt - (MS C)

N

• .nws - info text file (latest news) (ASCII)
• .nxt - sound (NeXT format)

O

• .obj - object code (Intel Recolatable Object Module)
• .ocx - OLE custom control
• .off - Object File Format vector graphics
• .old - backup file
• .ovl - overlay file (part of program to be loaded when needed)
• .ovr - overlay file (part of program to be loaded when needed)

P

• .pac - STAD Image (graphics ?)
• .pac - package (SBStudio II)
• .pal - color palette
• .par - permanent output file (Windows 3.x)
• .pcc - cutout picture vector graphics (PC Paintbrush)
• .pch - patch file
• .pct - bitmap graphics (Macintosh b&w PICT1 - color PICT2)
• .pcw - text file (PC Write)
• .pcx - bitmap graphics (PC Paintbrush)
• .pda - bitmap graphics
• .pdv - printer driver (Paintbrush)
• .pgm - Portable Grayscale bitMap graphics
• .pgm - program (Signature)
• .pgp - support file (Pretty Good Privacy RSA System)
• .pgs - manual page (man4dos)
• .pic - PIXAR picture file (SDSC Image Tool)
• .pic - bitmap graphics (Macintosh b&w PICT1 - color PICT2)
• .pic - bitmap graphics (many eg. Lotus 1-2-3 - PC Paint)
• .pif - Program Information File (Windows 3.x)
• .pif - vector graphics GDF format (IBM mainframe computers)
• .pit - compressed Mac file archive created by PACKIT (unpackit.zoo)
• .pll - pre-linked library (Clipper 5)
• .pnt - Macintosh painting
• .pop - messages index (PopMail)
• .pop - pop-up menu object (dBASE Application Generator)
• .prd - printer driver (many)
• .pub - public key ring file (Pretty Good Privacy RSA System)

Q

• .qpr - print queue device driver (OS/2)
• .qpx - compiled query program (FoxPro)
• .qrt - QRT ray tracing graphics
• .qry - query (dBASE IV)
• .qt - QuickTime movie (animation)
• .qwk - QWK reader message file
• .qxd - document (QuarkXPress)
• .qxl - element library (QuarkXPress)

R

• .rdi - device-independent bitmap file (RIFF RDIB format)
• .rdx - datafile (Reflex)
• .rec - datafile (EpiInfo)
• .rec - record file (Sprint)
• .rec - recorded macro file (Windows 3.x)
• .red - path info (Clarion Modula-2)
• .ref - cross-reference
• .reg - OLE Registration (Windows 3.x)
• .reg - registration (Corel programs)
• .rem - remarks
• .rgb - SGI RGB image file (SDSC Image Tool)
• .rif - RIFF bitmap graphics (Fractal Design Painter)
• .rip - graphics (Remote Access)
• .rix - bitmap graphics (ColorRIX VGA Paint)
• .rmk - makefile (RMAKE)
• .rpt - report
• .rtf - Windows Help file script
• .rtl - text file

S

• .sav - backup file (saved file)
• .sav - configuration
• .sav - saved game situation (eg. NetHack)
• .sbd - storyboard (Storyboard Editor)
• .sbi - Sound Blaster Instrument file (Creative Labs)
• .sbr - support file (Source Browser)
• .scc - text file
• .scr - DEBUG source code file (DOS Debug)
• .scr - screen saver (Windows 3.x)
• .scx - bitmap graphics (ColorRIX)
• .sea - Self-Extracting compressed Macintosh file Archive
• .sec - secret key ring file (Pretty Good Privacy RSA System)
• .sec - secured animation file (Disney Animation Studio)
• .set - setup options file
• .sgi - graphics (IRIS - Silicon Graphics)
• .sig - current program settings (Signature)
• .sig - signature file (PopMail)
• .sit - compressed Macintosh archive created by STUFFIT (unsit30.zip)
• .smp - sample (sound file)
• .smt - text file (Smart Ware II)
• .snd - digitized sound file (Macintosh/ATARI/PC)
• .spl - sample
• .sum - Summary
• .swp - swap file (DOS)
• .sys - datafile (SYGRAPH - SYSTAT - SPSS/PC)
• .sys - system file - device driver or hardware configuration info (DOS)

T

• .tbl - graphics (native format) (PageMaker TableEditor)
• .tbl - table of values (OS/2)
• .tel - host file (Telnet)
• .tga - TrueVision Targa bitmap graphics
• .tmp - temporary file
• .toc - Table Of Contents
• .tre - directory tree file (PC-Tools)
• .trm - terminal settings (Windows 3.x)
• .tut - tutorial

U

• .ub - audio file (unsigned byte)
• .uhs - Universal Hint System (binary file)
• .uif - long prompts for windows (WordPerfect for Win)
• .unx - text file containing UNIX specific info
• .upd - program update info
• .usr - user database file (Procomm Plus - Turbo C++ tour)

V

• .vbx - Visual Basic eXtension (Visual Basic)
• .vga - VGA display driver
• .vga - VGA display font
• .vgd - VGA display driver (Generic CADD)
• .vid - MS-DOS Shell Monitor file (MS-DOS 5)
• .vid - bitmap graphics (YUV12C M-Motion Frame Buffer)
• .vid - screen device driver (Word)
• .voc - digitized samples (Creative Voice file)
• .vst - Truevision Vista bitmap graphics
• .vue - animation (3D Studio)
• .vxd - Windows 3.x virtual device driver (QEMM)

W

• .w31 - startup file (Windows 3.1)
• .wav - Waveform audio file (RIFF WAVE format)
• .wbf - MS Windows Batch File (Catch)
• .wbt - batch file (WinBatch)
• .web - WEB source code file
• .woa - swap file (Windows 3.x)
• .wrs - Windows Resource eg. printer driver (WordPerfect for Win)

X

• .xbm - X11 Bitmap graphics
• .xll - Excel Dynamic Link Library (MS Excel)
• .xmi - compressed eXtended MIdi music
• .xwd - X Window System window dump image graphics (SDSC Image Tool)
• .xx - compressed file ASCII archive created by XXENCODE (uuexe515.exe)
• .xxe - compressed file ASCII archive created by XXENCODE (uuexe515.exe)

Z

• .zip - compressed file archive created by PKZIP (pkz204g.exe)
• .zoo - compressed file archive created by ZOO (zoo210.exe)