J, K, L, FILE EXTENSIONS STARTING FROM LETTER - J, K, L

J, K, L, - FILE SUFFIX - STARTING FROM ALPHABET - J, K, L

Ext.
Description
Used by
J2C
JPEG 2000 image
JAM
Jam messagebase
FTN software
Jam music score
JAR
Archive
JAR. Java Games and Applications
JAS
see JASC
JASC
Graphics format (JASC)
JAV
see JAVA
JAVA
Java source code file
JBD
Datafile
JBIG
Joint Bilevel Image Group
JBX
Project file
Project Scheduler 4
JCN
JobClock.Net Synch File
JET
Fax
Hybrid JetFax
JFF
see JFIF
JFIF
JPEG File Interchange Format
JIF
see JFIF
JMS
Music format (JMusic file)
UltraForce
JOB
Gravostyle engraving pattern file
JOB
QUEUE output file
JOR
Journal file SQL
JOU
Journal backup
VAX Edt editor
JP2
JPEG 2000 image
JPC
Graphics
Japan PIC
Joint Photography Experts Group graphics file format
QPeg - FullView - Display
JPG
see JPEG
JRE
Java Runtime Environment
Java
JRN
JMP journal
JMP
JSP
Java Server Pages
JS
JScript script file
Javascript
JTF
Fax
Hayes JT Fax
JTF
Graphics (TIFF file with JPEG compression)
JK
Root File of a lol
Earl Grey
JVX
Data
JavaView object
JW
Text document
JustWrite
JWL
Library
JustWrite
JZZ
Spreadsheet
Jazz


Ext.
Description
Used by
K2A
Data
Prince of Persia 3D object
K3D
Description of macro language 3DS
3DS
KAP
Map Info Sea Chart
KAR
Music format (Karaoke)
KAR
Precompiled .prg for KARAT
Rus. FOX+ 2.0
KB
Keyboard script
Borland C++ 4.5
KB
Program source
Knowledge Pro
KBASIC
Source
KBasic
KBD
Keyboard mapping
LocoScript - Signature - Procomm Plus
KBM
Keyboard mapping
Reflection 4.0
KCL
Lisp source code
Kyoto Common Lisp
KDB
KeePass 1.x database file
KDBX
KeePass 2.x database file
KDC
Kodak Digital Camera (graphics)
PhotoEnhancer by PictureWorks
KEP
(unknown)
(unknown)
KEX
Kedit Macro File
Kedit
KEY
Datafile
Forecast Pro
KEY
Keynote presentation file
Keynote (Apple iWork '08)
KEY
Keyboard macros
KEY
OS/2 archive .key-file (i.e. OS2.KEY)
OS/2
KEY
Security file e.g. Shareware Registration info
KFX
Kofax Group
GCGW
KIT
Power Chords drum kit file
Power Chord
KMC
KML
KMY
data
KMZ
Keyhole Markup Language (Zip compressed)
Knn
Database key file
Clarion
KNO
Personal Knowbase data file
Personal Knowbase
KPL
source code
KPP
Toolpad
SmartPad
KPS
IBM KIPS bitmap graphics
KR1
AWAVE
KR2
Kurzweil 2000 sample file
AWAVE
KRZ
Kurzweil K2000 File
Kurzweil
KS
Source code
KS3
Data
3D Forgastest Editor object
KTU
Know The Unknown Online Service Packs
Unknownsoft
KWB
Knowledge WorkBench
Prodeo
KYB
Keyboard mapping
FTP Software PC/TCP



Ext.
Description
Used by
L
LEX source code file
L
Linker directive file
WATCOM wlink
L
LISP source code file
LA0
Datafile
LAB
Datafile
NCSS - SOLO
LAB
Mailing labels
LAN
Erdas image file
LAN
LAN Drivers
Novell NetWare
LAY
Word chart layout
APPLAUSE
LBG
Label generator data
dBASE IV
LBL
Label
dBASE IV - Clipper 5 - dBFast
LBM
Graphics format (Amiga)
Pic-view - Deluxe Paint
LBM
Linear bitmap graphics
XLib
LBO
Compiled label
dBASE IV
LBR
forCP/M and MS-DOS using the LU program
LBR
Display driver
Lotus 1-2-3
LBT
Additional (FPT) label description file
FoxPro
LBX
Main (DBF) label description file
FoxPro
LCF
Linker Control File
Norton Guides compiler
LCH
Chart
IBM Works for OS/2
LCK
Lockfile
Paradox
LCL
Data (FTP Software PC/TCP)
LCL
Data
FTP Software PC/TCP
LCN
Lection
WordPerfect
LCS
Datafile
ACT! History Files
LCW
Spreadsheet
Lucid 3-D
LD
Long Distance codes file
Telix
LDA
Absolute binary file (load image)
PDP-11, RT-11
LD1
Overlay file
dBASE
LDB
Data filer database
IBM Works for OS/2
LDB
Overlay file
LDF
Data filer form
IBM Works for OS/2
LDF
Library definition file
Geoworks Glue
LE
DOS/4GW executable image
DOS/4GW PM 32X DOS Extender
LES
Lesson (check *.cbt)
LEV
Level file
NetHack 3.x
LEX
Dictionary
LFL
LucasArts resource file
LFD
LucasArts resource file
LucasArts games
LFT
Laser printer font
ChiWriter
LG
Logo procedure definitions
LSRHS Logo
LGO
Logo for header and footer
SuperFax
LGO
Startup logo code
Windows 3.x
LHA
Archive
LHA/LHARC
LHW
Amiga archive
LHWARP
LIB
Library file
several programming languages
LIC
License file used by some programs to put their license on disk
LIF
Archive
LIF
CA Clipper packed file
CA Clipper installer
LIF
Logical Interchange Format data file
Hewlett-Packard
LIM
Archive
LIMIT
LIN
Line types
AutoCAD
LIS
Listing
VAX
LIT
Web3D File
Web3D
LIX
Log file (history)
Audit Command Language (ACL)
LJ
Text file for HP LJ II printer
LL3
LapLink III related file (document)
LapLink III
LM
Auran Jet LOD mesh table (text file to control LODs)
Trainz
LMP
Doom lump (data file, commonly "demo" recordings)
Doom - Doom2
LNG
Language definition file
LNK
Linker response file
.RTLink
LNK
Linker script
LNK
Windows 95 shortcut
Windows 95
LNK
Windows XP shortcut
Windows XP
LOD
Load file
LOG
Log file
Numerous systems
LOM
3D Model
LPC
Printer driver
TEKO
Lyrics data
LRF
Linker response file
Microsoft C/C++
LRF
Unencrypted BroadBand eBook file
Sony Librie eBook reader
LRP
Report
IBM Works for OS/2
LRS
Language Resource File
WordPerfect for Win
LRX
Encrypted BroadBand eBook file
Sony Librie eBook reader
LSA
Lightscape Technologies ASCII
LSB
Lightscape Technologies Binary
LSP
LISP source code file
Xlisp, AutoLISP
LSS
Spreadsheet
Legato - IBM Works for OS/2
LST
Aus. BOM Hourly weather Data
LST
Filelist
FRQView
LST
Keyboard macro
1st Reader
LST
List file (archive index - compiler listfile)
LST
Listing (e.g. source code)
LST
Map list
Holux - Alan
LST
Spool file
Oracle
LST
SLP output file
LTA
Data
LithTech ASCII 3D object
LTM
Form (Lotus Forms)
Lotus
LUA
Lua script file
Microsoft Visual C++, Notepad++
LUW
label data file
Labels Unlimited for Windows
LUX
2D and 3D graphics data file
Foliomap and Spectramap
LUZ
3D graphics data file
Spectramap CUDA
LWD
Text document
LotusWorks
LWO
Lightwave Object Format
LWP
Word processor
IBM Works for OS/2, Lotus Wordpro
LXF
Lego Exchange Format
Lego Digital Designer data file
LXO
Luxology scene
LXT
Temporal database file
GTKWave data file
LY
LilyPond Notation File
LYR
Lyrics (ASCII)
LZ
Archive
Lzip
LZD
Difference file for binaries
LDiff 1.20
LZH
Archive
LHA/LHARC
LZS
Archive
LARC
LZW
Archive
LHWARP
LZX
Amiga Archive