This is a small recompilation of the most common file extentions on your Computer.
I hope it enlightens you and I wish you a pleasant learning experience !
A
*.acl Access-Code-Library for Windows
*.acm Advanced
Color-Driver-Modul
*.aif
Internet Audio File
*.ani
Animated cursor
*.arc
Compressed Data in LHARC-Format
*.asc PRO-CD Search Criteria-Initializing
*.asp ASP Shareware Text (Active Server
Page)
*.au
Audio-Basic-File
*.avi Windows
animated Video-File
B
*.b~k Copy of a BackUp Copy
*.bak Copy of a *.bat file
*.bas Symbol List Initializing;
BASIC-Sourcecode
*.bat
Batchdata to execute a program
*.bfc Win 95 Briefcase Data
*.bin Zipping Program (Compress) Data
*.bmp Windows-/OS2-Bitmap Grafic
(Background picture, etc.)
*.btx BTX-Decoder-File
C
*.cab Cabinet of DOS-Modules
*.cag Corel Art Gallery
*.cal Calender Data
(Microsoft)
*.cb Program
specific BackUp copie
*.cch
COREL Chart Data
*.cda
CD-Audio-Track
*.cdr COREL
Draw Picture
*.cdt COREL
Symbol Infokey Modul
*.cfg
Configuration Data
*.cim
BackUp Copy for WinCIM
*.cla
Hot Java Browser classification for Netscape
*.cmp GIF Construction Backup Graphics File
*.cmv COREL Move Datei
*.cmx COREL Presentation
*.cnt Calender-Save element
*.cnv Word Converter-Modul
*.com Executes a Program Group
*.cor BackUp Copy for COREL
*.cp$ Error Code Dos Calls
(Telephone)
*.cpi
DOS-Font-Registry
*.cpl
Codepage Listing for System's saved options
*.cpt COREL Photo-Paint Image
*.crd Card Data (Microsoft)
*.csv Excel Script-Format Data
*.cur Mouse Icon
*.cvp Delrina Winfax 3.0 Cover page data
D
*.dat
Data-File (D-Info etc. etc.)
*.db Database general
*.dba Paradox-Tabel
*.dbf Databank in dBase-Format
*.dic User diccionary
*.dif Excel Datatransfer File
*.dl Old Library-File from
Win 3.1
*.dll Actual
Library-Files
*.doc MS Word
Document
*.dos Windows 95
DOS-Systemdata
*.dot MS Word
Document Model
*.drv
Driver
*.ds4 Micrografx
Designer 4.0 File
*.dsg COREL
Query File
E
*.eng History of Revision in English
*.eps Micrografx Graphic Engine for
conversion
*.equ Word Equipped
Simbol Coverter
*.ex_
Not Unzipped Data (Programm)
*.exe Programm
F
*.flc Videosecuence in FLIC-Format
*.fli Videosequence in special
FLIC-Format
*.flt Grafic
Runtime-Modul
*.fmt Formated Print
Datai for MS Schedule+
*.fnd Saved
search in Explorer (Win95)
*.fnt DOS-System-Terminal-Fonts
*.fog Fontographer Font-Data
*.fot normal Fonts
*.frm OLE-Automations-Modul
*.fxd Fax-Data(Winfax 3.0)
*.fxr Fax-Receive Data (Winfax
3.0)
*.fxs Fax-Send Data
(Winfax 3.0)
G
*.ger History of Revision in German
*.gif Graphic Image Format C
89a (Picture-Data)
*.gra Graph
5 - Init Data
*.grp
Programgroup for Windows
H
*.hlp Help data from a Program
*.hot Internet-Browser
Hotlists
*.hpp Homepages (m.
Homepage Wizzard erstellt)
*.hpw
Homepage Wizard Data
*.hst Netscape Host-File
*.ht Hyperterminal-System
data
*.htm / *.html HTML
-Internet Data
I
*.icc Intelligent Color Charting
(Printer)
*.icm Intelligent
Color Matching Library
*.ico Icon-Data
*.id Identification Data on
installation Diskette
*.idf Midi-Instrument
Identification
*.in_ Not
unzipped Data (INI-Data)
*.inf Data for identification of drivers
(Windows)
*.ini
Initializing Data of a Program
*.isu Netscape Init-Strings
J
*.jpe
JPEG-Extended Picture
*.jpg
JPEG-Bild-Data
K
*.kbd Keyboard-Modul
L
*.lda MS Access
system specific information for Tabelles
*.ldb Init for the MS Access Databank
*.lex Lexikon-Data
*.lha Compress Data in
LHA-Format
*.lnk Shortcut to a
Program
*.log Log
file
*.lzh Compress data in
LZH-Format
M
*.mad Access
Module Shortcut
*.maf Access
Message Shortcut
*.mak
OLE-path instructions for COREL
*.mam Access Form Shortcut
*.maq Access request shortcut
*.mat Access Tabel Shortcut
*.mcc MSN Calling Program
*.mda MS Access System specific Tabel
*.mdb MS Access Databank
*.mdn Access System Data
*.mdt Access Add-In Data
*.mdw Access Workgroups
*.mdz Access Wizard - Help Data
*.me Text data (ex.
read.me)
*.mff
Midi File Format Sequencer Data
*.mid MIDI-Sound-Data
*.mod Saving Protocol
*.mod MONO-Digitally-Remastered Audio-File
*.mov Movie
(Quicktime-Movie-Format)
*.mpd
SCSI-Port-Init
*.mpg
Video-File to MPEG-Standard
*.ms Checklist after running a Virus
check
*.msg Network
Message
*.msn MSN Network
File
*.msp Paintbrush Picture
in old Format
*.mvs Info data
from ISH Shareware
*.mwf COREL
Move Data
N
*.nls Dialer
calling Protocol
O
*.obd Office 95 mapping Data
*.obt Office 95 mapping V
*.obz Office 95 mapping
A
*.ofn Win95 Office
Document
*.olb Object
Library (graphic modus)
*.old Backup copy of System
Data
*.or2 Lotus Organizer 2.x
Datei
*.org Lotus Organizer
1.x Datei
*.ovl Overlay
Keyboard color driver (Dos)
P
*.pat COREL Pattern Data
*.pbk MSN Network Phonebook
*.pct DOS-Grafic Viewer
*.pcx Paintbrush Picture
*.pdr SCSI recognition Modul
*.pfp Fontographer Font viewing
data
*.pif Program
information
*.pot Office 98
Powerpoint Oresentation form
*.pps
Office 98 Powerpoint Layouts
*.ppt Powerpoint presentation
*.prf Normal Color Matching Proof
Modul
*.pro DOS-Display-Modus
(depends from Video Card)
*.prt Print ready Data in MS Schedule
+
*.pst COREL
Post-Script-Font
*.pub COREL Ventura
Publication
*.pul D-Fax/D-Info
search criterium/initialization
*.pwl Symbol or Password Init
*.pwz Office 98 Powerpoint Assistent
Q
*.qic
Backup-Data von MS BACKUP
*.qtc Apple Quicktime Video Identification
R
*.ra REAL Audio Sound-File
*.ram REAL Audio Mega Quality
Sound-File
*.rc
Netscape News-File
*.rec
Recordermacro
*.reg
Registration editor list
*.rmi
registered MIDI-File (Microsoft)
*.rtf Rich-Text-Format Text data (readable in
Word)
S
*.scd MS
Schedule + (System data)
*.sch
Schedule + System data
*.scp DFÜ-Script Data
*.scr Screensaver data
*.scr Script administrative data
*.scz Copy from Schedule+ System
data
*.set Backup System
Data Intern
*.shb COREL Show
Animation
*.shr Corel Show RUN
presentation sequence
*.shs
System intern temporary Data
*.shw COREL Show File
*.slk Excel Data Import File
*.snd Sound File Basic
*.sts Status after running
MEMMAKER
*.swp Windows 95 Display
Data
*.sy_ Not Unzipped
System Data
*.syb BackUp Copy
of a *.sys
*.syk BackUp copie
of a *.sys
*.sys System
specific Data
*.sea Compressed Data
(Stuffit Mac)
T
*.tar Compressed Data in TA-Format
*.taz Compressed Data in
TA-Format
*.tco Spea Setup
Protokoll
*.tga Targa Format
(Picture Data)
*.thn Thumbnail
(Minia Picture in Grafic Workshop 1.x)
*.tif Tagged Image Format (Picture
Data)
*.tlb Type
Library (ex. COREL )
*.tmp
Temporary Data
*.tpl MIDI-Template
*.trm Settings for Terminal
program
*.trn
ASCII Code Modul
*.tsk Task File Description
*.ttf True Type
Fonts
*.txt Text
Data
U
*.url Internet
Address instruction Data (Uniscoure Resource Locator)
V
*.vbx Visual Basic Library
*.vbs Visual Basic Script
*.vid Visual Basic Identification
Driver
*.voc Vocal Sound
File
*.vue Validating
Password-File (Win 95)
*.vxd
Windows specific Driver
W
*.w31 BackUp Data to restore Win 3.1
*.w95 Important Windows 95
Backup
*.wav Wave Audio
Data
*.wbk MS Word Workbench
Backup copy
*.wiz
MS Word Wizard Assistent
*.wll MS Word Add-In
*.wmf Windows Meta File (Clipart Grafic
Data)
*.wpg DOS
Picture
*.wps Write Personal
Script or Text-File
*.wri Text
in Write Format (Word-Pad)
*.wrk Cakewalk Pro Sequence File
*.wrl Vrealm 3D World Data
X
*.xbm Internet
Image (Autoload)
*.xla Excel
Add-In Data
*.xlb MS Excel
Data
*.xlc Excel Chart
(Diagram)
*.xld Excel Dialog
Data
*.xlk Excel BackUp
Copy
*.xll Excel
XLL-Add-In
*.xlm Excel Macro
form
*.xls Excel
Tabel
*.xlt Excel
Template
*.xlv Excel Visual
Basic Modul
*.xlw Excel
Workgroups
Y
- (Don't know
any)
Z
*.zip
Compressed Data
General Extensions
*.$$$
Buffer Data in a Dos Game
*.- -
- Backup Data for Windows 3.x
*.~mp Duplicate from a Temporary Data
*.000 BackUp from a Windows
Program
*.2gr
VGA-Color-Init
*.386
Important System Components, Emulators
*.3gr VGA-Color-Init
