List of filename extensions (F–L)
From Infogalactic: the planetary knowledge core
(Redirected from Alphabetical list of file formats (F–L))
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This alphabetical list of filename extensions contains standard extensions associated with computer files.
A–E
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F
Ext. | Description | Used by |
---|---|---|
F | Archive | FREEZE |
F | Forth language source code file | Forth development systems |
F | Fortran language source code file (in fixed form) | Many Fortran compilers |
F01 | Fax | perfectfax |
F03 | Fortran language source code file (in free form) | Many Fortran compilers |
F2R | Farandole Linear Module | Farandole |
F3R | Farandole Blocked Linear Module | Farandole |
F4 | Fortran IV source code file | |
F4A | Flash Video F4V with only audio (see also SWF) | Adobe Flash |
F4B | Flash Video F4V audiobook (see also SWF) | Adobe Flash |
F4P | Flash Video F4V with digital rights management (see also SWF) | Adobe Flash |
F4V | A container format for Flash Video that differs from the older FLV file format (see also SWF) | Adobe Flash |
F77 | Fortran language source code file (in fixed form) | Many Fortran compilers |
F90 | Fortran language source code file (in free form) | Many Fortran compilers |
F95 | Fortran language source code file (in free form) | Many Fortran compilers |
F96 | Fax | Frecom FAX96 |
FAC | see FACE | |
FACE | Usenix FACE graphics file | |
FAL | Falcon script source | Falcon |
FAM | Famtasia Famicom image format | Famtasia |
FAQ | Frequently Asked Questions text file | |
FAR | Music format (Farandole Composer Module) | Farandole |
FAS | Macsyma compiled program | |
FAX | Fax (raster graphics in CCITT format) | most Fax programs |
FB | Backup files | Fifth Generation Systems FastBack Plus |
FBM | Fuzzy Bitmap | |
FBW | HP Backup and Recovery Manager | HP Backup |
FC | Spell checking dictionary | Harvard Graphics 2.0 |
FCM | Binary file patch file (forward compression) | jlpak10.zip |
FCP | Final Cut Pro project file | Final Cut Pro |
FD | Declaration file | Microsoft Fortran |
FD | Field offsets for compiler | DataFlex |
FD | Front Door' resource files | FD |
FDB | Font Definition Block | Ming library |
FDS | fwNES Famicom Disk System image | fwNES |
FDS | Headerless Famicom Disk System image | |
FDW | Form | F3 Design and Mapping |
FDX | Screenplay | Final Draft |
FE | Data | Surface Evolver 3D surface |
FEB | Button bar for Figure Editor | WordPerfect for Win |
FEI | Fatal Error Infotable | Geoworks |
FES | File produced when a fileless occurrence in 3D Topicscape is exported to Windows | 3D Topicscape |
FF | Intelligont FIAS format | |
FF | Outline font description | Agfa Compugraphics |
FFE | Front Fareast Famicom image format | |
FFF | Fax | defFax |
FFI | Atech FastFont (AllType) | |
FFIVW | File Format for the Interchange of Virtual Worlds | |
FFT | Dca/FFT Final Form Text text file (DisplayWrite) | |
FFT | DCA/FFT Final Form Text text file | DisplayWrite |
FH3 | Vector graphics | Aldus FreeHand 3.x |
FH4 | Vector graphics | Aldus FreeHand 3.x |
FI | Interface file | Microsoft Fortran |
FIF | Fractal Image Format file | |
FIG | Figure File | MATLAB |
FIL | Table Data | Audit Command Language (ACL) |
FIL | File template | Application Generator |
FIL | Filelist | |
FIL | Files list object file | dBASE Application Generator |
FIL | Mirror. FIL is the name given to the saved FAT by the mirror program included in some versions of DOS and in PCTools | MS-DOS - |
FIL | Overlay | WordPerfect |
FIL | File which was moved to the Virus Vault by AVG | |
FILE | A generic Windows file | |
FILM | Filmkey film file | Filmkey Player |
FIN | Print-formatted text file | Perfect Writer - Scribble - MINCE |
FIO | Aldus PhotoStyler graphics filter | |
FIO | Image PALS viewer DLL | |
FIT | File Index Table | WindowsNT |
FIT | see FITS | |
FIT | Fityk Script | Fityk |
FITS | Flexible Image Transport System | astronomy software |
FIX | Patch file | |
FKY | Macro file | FoxPro |
FLA | Source material for Flash applications (see SWF) | Adobe Flash |
FLAC | Audio codec, Audio file format | |
FLAME | Fractal configuration file | Apophysis |
FLB | Format library | Papyrus |
FLC | Animation format FLIC >320x200 | AAPlay - Autodesk AniPro |
FLD | Folder | Charisma |
FLI | Animation format FLIC 320x200 | Autodesk Animator |
FLI | TeX font library | EmTeX |
FLM | Film Roll | AutoCAD/AutoShade |
FLP | Flstudio project file | Fruity Loops (FlStudio) |
FLP | FLP Designer layout file | FLP Designer |
FLT | Data/file conversion filter (or overlay) | Alsud, Microsoft Word |
FLT | Filter file | Micrografx Picture Publisher |
FLT | MultiGen Flight | |
FLT | Support file - graphics filter | Asymetrix ToolBook |
FLX | Animation format | |
FLX | Compiled binary | DataFlex |
FLV | A container format for Flash Video (see also SWF) | Adobe Flash |
FM | Database | FileMaker Pro |
FM1 | Spreadsheet format overlay | Lotus 1-2-3 release 2.x |
FM3 | Device driver | Harvard Graphics 3.0 |
FM3 | Spreadsheet | Lotus 1-2-3 release 3.x |
FMB | File Manager Button bar | WordPerfect for Win |
FMF | Font or icon file | IBM LinkWay |
FMK | Makefile | Fortran PowerStation |
FMO | Compiled format file | dBASE IV |
FMT | Format file | dBASE IV - FoxPro - Clipper 5 - dBFast |
FMT | Gate3 format file | |
FMT | Style sheet | Sprint |
FMV | Full Motion Video file | |
FN3 | Font file | Harvard Graphics 3.0 |
FND | Files searching properties | Win95 |
FNI | FileNet Native Document | FileNet |
FNK | FunkTracker music module | AWAVE, FunkTracker |
FNM | Fannie Mae Residential Loan Data (RLD) format for mortgage submission to DO/DU | Desktop Originator |
Fnn | DOS screen text font - height nn pixels | fntcol13.zip |
FNT | Font file | many |
FNX | Inactive font | Exact |
FO1 | Font file | Borland Turbo C |
FO2 | Font file | Borland Turbo C |
FOG | Fontographer Database File | Fontographer3.5 |
FOL | Folder of saved messages | 1st Reader |
FON | Log of all calls | Procomm Plus |
FON | Terminate phonebook | Terminate - Terminator - Telix |
FON | Windows bitmapped font file | Win |
FONT | Font data | unix |
FOP | Freedom of the Press graphic file | |
FOR | Form | WindowBase |
FOR | Fortran language source file | many |
FOT | Installed Truetype font | Windows Font Installer |
FOX | Foxbase executable (precompiled .prg) | FoxBase |
FP | Final Page file | FoxPro for DOS |
FP | Tiff file | TIFF/IT P1 |
FP | Video file | DVICO/TVIX MPEG1 video file |
FP3 | Database | FileMaker Pro |
FP4 | Database | FileMaker Pro |
FP5 | Database | FileMaker Pro |
FP7 | Database | FileMaker Pro |
FPC | Catalog | FoxPro |
FPD | TMT Pascal compiled unit | TMT Pascal |
FPM | Configuration file | FoxPro for MacIntosh |
FPT | Foxpro memo field tables | FoxPro |
FPU | Configuration file | FoxPro for Unix |
FPW | Floorplan drawing | FloorPLAN plus for Windows |
FPW | Configuration file | Visual FoxPro |
FPX | FlashPix Bitmap Image File | FlashPix |
FR? | Packed mail | FTN software |
FR3 | Renamed dBASE III+ form file | dBASE IV |
FRF | FontMonger Database file | FontMonger |
FRG | Uncompiled report file | dBASE IV |
FRL | GP-Forth library | GP-Forth |
FRM | Registration or other form | |
FRM | Report file | dBASE IV - Clipper 5 - dBFast |
FRM | Visual Basic Form | Visual Basic |
FRO | Compiled report file | dBASE IV |
FRP | Form | PerForm PRO Plus - FormFlow |
FRS | Screen Font Resource | WordPerfect for Win |
FRT | Additional (FPT) report description file | FoxPro |
FRT | GP-Forth source file | GP-Forth |
FRX | Main (DBF) report description file | Visual FoxPro |
FRX | Visual Basic binary program file | Visual Basic |
FSA | Applied Biosystems Genetic Analysis data file | GeneScan |
FSIM | Simulation File Format | Loudsoft |
FSL | Form | Paradox for Windows |
FSM | Farandole Composer WaveSample | Farandole |
FSPROJ | Habanero Firestarter project | Habanero Firestarter |
FST | Linkable program | dBFast |
FST | Temporal database file | GTKWave data file |
FSTICK | Temporal database file | Flash Joystick |
FSX | Data | Lotus 1-2-3 |
FTD | Falcon dynamic template | Falcon |
FTM | Font file | Micrografx |
FTS | Full text search index of old Windows Help file | Windows 3.0 - XP |
FTXT | text | Cloanto text document |
FTP | Configuration | FTP Software PC/TCP |
FUK | Map File | Postal 2 |
FW | Database | FrameWork |
FW2 | Database | Framework II |
FW3 | Database | Framework III |
FWEB | Fortran WEB | |
FX | On-line guide | FastLynx |
FXD | Phonebook | FAXit |
FXP | Foxpro executable (precompiled .prg) | Visual FoxPro |
FXS | FAX Transmit Format graphics file | WinFax |
FYF | FileLoc | FyTek, Inc. |
G
Ext. | Description | Used by | |
---|---|---|---|
G | Data chart | APPLAUSE | |
G16 | GoldED for DOS compiled config | GOLDED.EXE | |
G3 | Group 3 Fax | Netpbm,ImageMagick,XnView | |
G3D | Glest model file | G3D viewer | |
G3P | data | Grand Prix 3 car physics | Grand Pix 3 |
G8 | Raw graphics file (one byte per pixel) plane three | PicLab - Cubicomb Picturemaker | |
GAF | Globa Game Engine audio format | Globa Game Engine | |
GAM | Fax | GammaFax | |
GAMEPROJ | Gamesalad game project format | GameSalad | |
GB | Game Boy ROM | Nintendo | |
GB1 | Game Maker backup file (can also be GB2, GB3, etc.) | ||
GBA | Game Boy Advance ROM | Nintendo | |
GBC | Game Boy Color ROM | Nintendo | |
GBL | Genesis Bitmap Layout | Genesis Bitmap | |
GBL | Global definitions | VAXTPU editor | |
GBL | Global module in Basic programs | Basic | |
GBP | Genesis Bitmap Pattern | Genesis Bitmap | |
GBS | GBS meta data | Generic Build Support (GBS) | |
GBR | Gerber format | PCB CAD/CAM | |
GBR | GIMP brush | ||
GC | Savegame | Star Wars: Battlefront II Galactic Conquest save file | |
GC1 | Lisp source code | Golden Common Lisp 1.1 | |
GC3 | Lisp source code | Golden Common Lisp 1.3 | |
GCA | IBM GOCA | GCGW | |
GCD | Graphics | ROBLOX | |
GCD | General content descriptor | Wireless devices | |
GCD | Generic Cadd drawing | Generic Cadd, Visual Cadd | |
GCF | Game cache file | Steam content delivery system | |
GCH | GNU preprocessed C++ header file | GNU C++ compiler | |
GCI | Nintendo GameCube save file | Nintendo GameCube | |
GCX | Graph file | Mac OS X Grapher | |
GD3 | Game Doctor Super NES ROM image | ||
GDF | General Data Format for Biomedical Signals | Biomedical signal processing, Brain Computer Interfaces | |
GDF | Dictionary file | GEOS | |
GDF | Geographical Data Format | Various mapping software | |
GDF | IBM Graphics Data Format | Legacy IBM systems | |
GDL | Data | ArchiCAD model | |
GDS | McDonnell-Douglas Things | ||
GDT | Gerätedatentransfer, an xDT application | Healthcare providers in Germany | |
GE | GEcho config file | GEcho | |
GED | GEDCOM | Genealogy data exchange | |
GED | Native format for all A&L products since 1983 | Arts & Letters | |
GED | GoldED for DOS compiled config file | GOLDED.EXE | |
GED | Graphics editor file | EnerGraphics | |
GED | Game Editor Data / project file | Game Editor | |
GEM | Vector graphics file | GEM - Ventura Publisher | |
GEN | Compiled template | dBASE Application Generator | |
GEN | Generated text | Ventura Publisher | |
GEO | Geode | Geoworks | |
GEO | GEOS specific file (application) | GEOS | |
GEO | GoldED for OS/2 compiled config file | GED2.EXE | |
GEX | GEcho config file | GEcho | |
GFB | Compressed GIF image created by GIFBLAST | gifblast.exe | |
GFO | SGI Radiosity | ||
GFT | Font | NeoPaint | |
GFT | GEM-translator font file | ||
GFX | Instant Artist graphics Files | Instant Artist | |
GFX | PCBoard @X-coded colorful text | GFX2COM - GFX2EXE | |
GHO | Norton Ghost File (first file) | Symantec | |
GHS | Norton Ghost File (split file) | Symantec | |
GHW | GHDL Wave file | GHDL/GTKWave data file | |
GIB | Chart | Graph-in-the-Box | |
GIB | GIMP animated brush | ||
GID | Global index of old Windows Help file | Windows 3.0 - XP | |
GIF | Compuserves' Graphics Interchange Format (bitmapped graphics) | QPeg - Display - CompuShow | |
GIW | Presentation | Graph-in-the-Box for Windows | |
GKH | Ensoniq Disk Image (VFX, SD, EPS, ASR, TS) | Ensoniq | |
GKS | Graphics Kernel System | ||
GL | Animation format | grasprt.exe, PV | |
GL | Animation | GRASP GRAphical System for Presentation | |
GLB | Global module in Basic programs | ||
GLM | Datafile, KernelCAD model | Glim, KernelCAD | |
GLO | Global module in Basic programs | ||
GLS | Datafile | Across | |
GLY | Winword Glossary | Microsoft Word | |
GM6 | GameMaker Editable file as of version 6.x | Game Maker | |
GM81 | GameMaker Editable file as of version 8.1.x | Game Maker | |
GMD | GameMaker Editable file up to version 5.x | Game Maker | |
GMF | CGM graphics file | APPLAUSE | |
GMK | GameMaker Editable file as of version 7.x or 8.x | Game Maker | |
GML | GameMaker GML script file | Game Maker | |
GML | Geography Markup Language File | Geography Markup Language | |
GMOD | Data | Golgotha 3D model | |
GMP | Geomorph tile map | SPX | |
GMS | Ghost Mouse Script | ||
GMS | Gesture and Motion File Formats | ||
GMT | Gene Matrix Transposed | ||
GMT | data | RFactor car physics | |
GMX | GameMaker:Studio Editable File as of 1.x | Game Maker | |
GO | Go source code file | Golang | |
GOC | Goc source code file | Geoworks | |
GOE | GOES graphic file | ||
GOH | Goc header file | Geoworks | |
GP | Geode parameter file | Geoworks Glue | |
GP4 | data | Grand Prix 4 car physics | |
GP5 | Guitar Pro 5 song | Guitar Pro 5 | |
GPH | Graph | Lotus 1-2-3/G | |
GPK | Omnigo program package | ||
GPX | GPS eXchange Format | ||
GR2 | Screen driver | Windows 3.x | |
GRA | Datafile | SigmaPlot | |
GrADS | Metafile | ||
GRAFFLE | OmniGraffle graph file | ||
GRASP | Graphical System for Presentation | ||
GRB | T-FLEX CAD file | Top Systems | |
GRB | MS-DOS Shell Monitor file | MS-DOS 5 | |
GRD | Drivers for GRX (graphics library) | GRX (c) Free Soft. Found. | |
GRDNT | Image format used in the core of some very obscure customized operating systems to represent gradients; see also SCTOR | ||
GRE | data | Grenoble Thermal ellipsoids Plot Program | |
GRF | Graph file | Graph Plus, DPlot, and Charisma | |
GRFT | Graph definition text file | SELDM Postprocessor | |
GRIB | Gridded Binary | ||
GRN | Drivers for GRX (graphics library) | GRX (c) Free Soft. Found. | |
GRP | Group file | Windows 3.x - Papyrus | |
GRP | Pictures group | PixBase | |
GRY | Graphics format (RAW GREYz) | ||
GS | Script written in Google Apps Script, used for automating tasks across online Google products | Google Apps Script | |
GS1 | Presentation | GraphShow | |
GS3 | data | GameStarter | |
GSA | data | Microsoft Office Groove Space Archive | |
GSD | Vector graphics | Professional Draw | |
GSM | Raw GSM 6.10 audio stream | AWAVE | |
GSP | Geometer's Sketchpad | ||
GSW | Worksheet | GraphShow | |
GTA | data | Microsoft Office Groove Tool Archive | |
GUP | PopMail | ||
GV | GrandView outline file | ||
GVO | Data | GFXFX Vector Object | |
GWI | Groupwise File | Local saved Email | |
GXL | Graphics library | Genus | |
GXK | Secure Data encryption Format | Galaxkey | |
GZ | Archive | GNU zip - WinZipNT | |
GZR | data | GunZ action replay |
H
Ext. | Description | Used by |
---|---|---|
H! | On-line help file | Flambeaux Help! Display Engine |
H! | Pertext database | HELP.EXE |
H-- | C—language header | Sphinx C-- |
H | Header file (usually C language) | Watcom C/C++ |
H++ | Header file | C++ |
HA | Archive | HA |
HAL | Data file | Hyper Access Lite OS/2 |
HAM | Disk Drivers NPA | Novell NetWare |
HAM | Hold And Modify | Deluxe Paint image file |
HAP | Archive | HAP3 |
HBC | Compressed Archive File (Shrink Algorithm) | Hyperbac |
HBC | Compressed Archive File (Shrink Fast Algorithm) | Hyperbac |
HBE | Compressed, Encrypted Archive File (Shrink & AES256-bit Encryption) | Hyperbac |
HBK | MathCAD handbook | MathCAD |
HC | Header file | |
HCG | Document | HCLab |
HCGS | Document | HCLab |
HDD | data | disk image |
HDD | HotDisc Designer label | |
HDF | Amiga Hard Disk Image | |
HDF | Help file | Help Development Kit |
HDF | Hierarchical Data File graphics file | SDSC Image Tools |
HDL | Alternate download file listing | Procomm Plus |
HDMP | heap dumpfile | |
HDR | Datafile | Egret |
HDR | Message header text | Procomm Plus - 1st Reader |
HDR | PC-File+ Database header | |
HDR | SPOT image file | |
HDS | Hierarchical Data System | |
HDW | Vector graphics | Harvard Draw |
HDX | Help index | AutoCAD - Zortech C++ |
HDZ | Amiga Zip compressed Hard Disk Image | |
HEP | Novell Help Librarian Data File | Novell NetWare |
HEX | Hex dump | |
HFI | HP Font Info file | GEM |
HGL | Highlight groups definitions | DN |
HGL | HP Graphics Language graphics file | |
HH | C++ header file | |
HHH | Precompiled header file | Power C |
HHP | Help information for remote users | Procomm Plus |
HI | Game high scores table | |
HIN | Molecule | HyperChem |
HIS | History of executing/viewing/editing | DN |
HIS | Yard Information File | FYM |
HKM | Stores sound in a bitmapped graphics file | |
HLB | Help library | VAX |
HLP | old Windows Help file | Windows 3.0 - XP, Help Explorer Viewer |
HLX | Multi Edit help file | MultiEdit 5.0 |
HLZ | Multi Edit packed help file | MultiEdit |
HMI | Music format (MIDI) | |
HMM | Alternate Mail Read option menu | Procomm Plus |
HMP | Music format (MIDI) | |
HMP | Hump Setup File - Obsolete as of version 2.4 (See SET and SWT files) | FYM |
HNC | CNC program files Heidenhain (?) dialog | |
HOF | Hall Of Fame (game scores) | |
HOM | CAD Software Data File | PLXHOME |
HP | Printout file for HP printers/plotters (HP/GL) | |
HP8 | ASCII text HP Roman8 character set | NewWave Write |
HPF | HP LaserJet fonts | PageMaker |
HPG | see HPGL | |
HPGL | Plotter file vector graphics (Hewlett-Packard Graphics Language) | AutoCad - Harvard Graphics |
HPI | Font information file | GEM |
HPJ | Help project | Microsoft Help Compiler for Windows - HC.EXE |
HPK | Archive | HPACK |
HPM | Alternate Main menu for privileged users | Procomm Plus |
HPM | EMM text | HP NewWave |
HPM | High Performance Map | Quaestor 1.x |
HPP | C++ header file | Zortech C++ - Watcom C/C++ |
HPPCL | Hewlett-Packard Printer Control Language | |
HQX | Archive (ASCII Mac) | BINHEX |
HRF | Graphics file (Hitachi Raster Format) | |
HRM | Alternate Main menu for limited/normal users | Procomm Plus |
HRZ | Graphics format | SSTV |
HS2 | Monochrome image | Postering |
HSC | 2-op FM music | HSC tracker - hscplay.exe |
HSH | Disk image hash file | DriveSnapshot |
HSI | Handmade Software Inc. graphics file almost JPEG | Image Alchemy |
HST | History file | Procomm Plus |
HTM | see HTML | |
HTML | Hypertext Markup Language (WWW) | Netscape - Mosaic - many |
HTX | Hypertext file | |
HUS | Husqvarna Viking Embroidery Format | Embroidermodder |
HVE | Hive file[1] | Microsoft |
HWA | Hollywood applet | Hollywood |
HWD | Presentation | Hollywood Designer |
HWP | Hangul Word Processor Document | Hangul (word processor) |
HWS | Hollywood script | Hollywood |
HXM | Alternate Protocol Selection menu for all users | Procomm Plus |
HXS | Microsoft Help 2 compiled help file | Microsoft Windows, Help Explorer Viewer |
HXX | C++ header file | |
HY1 | Hyphenation algorithms | Ventura Publisher |
HY2 | Hyphenation algorithms | Ventura Publisher |
HYC | Data | WordPerfect |
HYD | Hyphenation dictionary | WordPerfect for Win |
HYP | Archive | HYPER |
I
Ext. | Description | Used by |
---|---|---|
I | Preprocessor output file | Borland C Preprocessor |
I | SWIG interface file | SWIG |
IAK | Internet Access Kit | OS/2 |
IAM | Assembly file | Autodesk Inventor |
IAX | Bitmap graphics (IBM Image Access eXecutive) | |
IAX | data | InstallAnywhere.NET project |
IBG | PDS graphic file | |
IBM | Archive (Internal IBM only) | ARCHDOS |
IBRO | Robot save file | Incredibots 2 |
ICA | Bitmap graphics (Image Object Content Architecture) | |
ICB | Targa ICB bitmap graphics | many raster graphics editors |
ICC | ICC configuration | |
ICE | LHA Archive | Cracked LHA (old LHA), Total Commander |
ICFE | IceFormula Equation Workspace | Penguin George |
ICFM | IceFormula Math Workspace | Penguin George |
ICM | ICC configuration | |
ICN | ICON source code file | |
ICO | Icon file | ICONEDIT.EXE; Microsoft Windows |
ID | Disk identification file | |
IDB | IDA database | IDA |
IDB | VC++ Minimum Rebuild Dependency File | Visual C++ |
IDC | IDA C language source | IDA |
IDE | Borland C++ 4.x IDE project | BCW.EXE |
IDF | MIDI instrument description | |
IDS | IDA imported names format | IDA |
IDW | Vector graphics | IntelliDraw |
IDW | Drawing file | Autodesk Inventor |
IDX | Index | many - FoxPro; also unrelated Quicken file format |
IFD | Form | JetForm Design |
IFF | Interchange Format File (IFF) | EA Software - Convert (C) Villena - Amiga |
IFF | Sun TAAC Image File Format | SDSC Image Tool |
IFP | Script | KnowledgeMan |
IFS | Fractal image compressed file | Yuvpak |
IFS | Iterated fractal system file | IFS Creation Kit, Apophysis |
IFS | Installable file system | OS/2 |
IGES | Initial Graphics Exchange Specification | |
IGF | Inset Systems | GCGW |
IGC | Flight tracks downloaded from GPS devices in the International Gliding Commission's prescribed format | |
IHP | Watcom help file | whelp.exe |
IHS | Inbound History | Bink/+ |
IIW | Power Point Image Importer Wizard | |
IL | hDC Designer Icon Lin dll format | |
ILB | Data | Scream Tracker |
ILG | data | LaTeX Index Generation log |
ILK | Outline of program's format | Microsoft ILink incremental linker |
IM | Auran Jet indexed mesh file | Trainz |
IM8 | Sun Raster graphics file | |
IMA | Mirage vector graphics | EGO - Chart - Autumn |
IMA | Disk image | WinImage |
IMG | ADEX graphic file | |
IMG | Disk Image | NC 5.0 |
IMG | GEM bitmapped graphics file | Ventura |
IMG | Image for Windows/Image for DOS Disk image | TeraByte, Inc. dba TeraByte Unlimited |
IMG | Vivid IMG file | |
IMI | image | Magellan Meridian map |
IMI | image | Magellan eXplorist map |
IMP | Spreadsheet | Lotus Improv |
IMQ | Image presentation | ImageQ |
IMZ | Disk image | WinImage |
IN | Design II for Windows INput file | |
IN | autoconf INput file | |
IN$ | Installation file | HP NewWave |
IN3 | Input device driver | Harvard Graphics 3.0 |
INB | Test script | Vermont HighTest |
INC | Include file | several programming languages |
IND | Data Index | dBASE IV |
INDD | InDesign Document | Adobe InDesign |
INF | Information text file (ASCII) | |
INF | Install script | |
INF | OS/2 hypertext help system file | VIEW.EXE |
INF | Type 1 LaserJet font information file | soft font installers |
INFO | GNU info reader (output from Texinfo) | info (Unix) |
INFO | Icon Data (Amiga) | |
INGR | Intergraph Raster File Format | |
INI | Initialization file | |
INK | Pantone reference fills file | CorelDRAW |
INS | Data | WordPerfect |
INS | Ensoniq Instrument File | Ensoniq |
INS | Installation script | 1st Reader |
INS | Instrument music file (Adlib) | |
INT | Borland Interface Units | |
INT | Program saved in Internal (semi-compiled) format | Signature |
INT | Source of Borland interface module | |
INX | Index | Foxbase |
IO | Archive | CPIO |
IOB | 3d graphics database in TDDD format | Imagine |
IOC | Organizational chart | Instant ORGcharting! |
ION | 4DOS DESCRIPT.ION file (file descriptions like long filenames, comments, or extended attributes) | 4DOS, NDOS, 4OS2, 4NT, TC, TCC, VC, DN, ODN, NDN, Windows Commander, Total Commander, XnView, ACDSee, Newsbin Pro, V, as well as some CUI LIB-based applications |
IP | Immortal Player file | Immortal Player |
IPA | Apple iOS Application | iPhone, iPod touch, iPad |
IPC | Intellitec Program Configuration - used to configure vehicle electronics | Intellitec |
IPF | Interchangeable Preservation Format | SoftPres |
IPG | iPod game file | iTunes and iPod |
IPH | Hi-Res Image | InterPaint |
IPL | Pantone Spot reference palette file | CorelDRAW |
IPN | Intecplan project | Intecplan Business Plan Software |
IPS | IPS Patching Format (International Patching System)[citation needed] | Rom hacking community |
IPSW | iOS firmware file | iPhone, iPod touch, iPad, Apple TV |
IPT | Part file | Autodesk Inventor |
IPT | MultiColor Image | InterPaint |
IRRMESH | static irrMesh files | |
IRS | Resource (WordPerfect) standard.irs | WordPerfect |
IRT | Data | IRIT 3D model |
IRTR | Graphicon-2000 Interactive Real-Time PHIGS | |
ISD | Spelling Checker dictionary | RapidFile |
ISH | Archive | ISH |
ISMA | Output Video file | Islam Abusa'a Software |
ISO | ISO-9660 table | see: List of ISO image software |
IST | Digitrakker Instrument File | AWAVE |
IT | Impulse Tracker music file | Impulse Tracker |
IT | Settings | intalk |
ITF | Technical indicator, trading system or market scan source code file | ProRealTime |
ITF | Interface file | JPI TopSpeed Pascal |
ITL | iTunes music library | |
ITN | Itinerary file | TomTom PNDs |
ITT | IconTweaker Theme | |
IV | SGI Inventor | |
IV-VRML | Inventor VRML Format | |
IVE | OpenSceneGraph 3D model | |
IVI | Image file | ImmerVision |
IVL | Lensflare file | ImmerVision |
IVP | Panorama file | ImmerVision |
IVU | User Interface file | ImmerVision |
IW | Presentation flowchart | IconAuthor - HSC InterActive |
IWA | Text file | IBM Writing Assistant |
IWB | Information WorkBench | Prodeo |
IWD | Call of Duty Map - Game Data Archive | Activision, Inc. |
IWP | Text file | Wang |
IX | data | dtSearch index |
IZT | Izl binary token file | IZL |
J
Ext. | Description | Used by |
---|---|---|
J2C | JPEG 2000 image | |
JAM | Jam messagebase | FTN software |
JAM | Jam music score | Jam |
JAR | Java archive | JAR, Java Games and Applications |
JAS | see JASC | |
JASC | Graphics format (JASC) | |
JAV | see JAVA | |
JAVA | Java source code file | |
JBD | Datafile | SigmaScan |
JBIG | Joint Bilevel Image Group | |
JBX | Project file | Project Scheduler 4 |
JCN | JobClock.Net Synch File | |
JEF | Janome Embroidery Format | Embroidermodder |
JET | Fax | Hybrid JetFax |
JFF | see JFIF | |
JFIF | JPEG File Interchange Format | |
JIF | see JFIF | |
JMS | Music format (JMusic file) | UltraForce |
JNLP | Java Network Launching Protocol | Java Web Start |
JOB | Gravostyle engraving pattern file | Gravostyle/Gravograph |
JOB | QUEUE output file | RT-11 |
JOR | Journal file SQL | |
JOU | Journal backup | VAX Edt editor |
JP2 | JPEG 2000 image | |
JPC | Graphics | Japan PIC |
JPEG | Joint Photographic Experts Group graphics file format | QPeg - FullView - Display |
JPG | Joint Photographic Group | |
JPS | backup of startup files (AUTOEXEC.BAT, CONFIG.SYS, 4DOS.INI) by installation of 4DOS (JP Software) | 4DOS |
JRE | Java Runtime Environment | Java |
JRN | JMP journal | JMP |
JS | JavaScript file | script in HTML pages |
JSON | JSON (JavaScript Object Notation) | Ajax |
JSONLD | JSON-LD, a JSON-based Serialization for Linked Data | |
JSP | JavaServer Pages | Dynamic pages running Web servers using Java technology |
JTF | Fax | Hayes JT Fax |
JTF | Graphics (TIFF file with JPEG compression) | |
JVX | Data | JavaView object |
JW | Text document | JustWrite |
JWL | Library | JustWrite |
JZZ | Spreadsheet | Jazz |
K
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) | ITune 1000.Corp |
KAR | Precompiled .prg for KARAT | Rus. FOX+ 2.0 |
KB | Keyboard script | Borland C++ 4.5 |
KB | Program source | Knowledge Pro |
KB | K-Brief in XML format | TCC's Set-Based Thinking™ Tools |
KBA | K-Brief Attachment | TCC's Set-Based Thinking™ Tools |
KBASIC | Source | KBasic |
KBD | Keyboard mapping | LocoScript - Signature - Procomm Plus |
KBM | Keyboard mapping | Reflection 4.0 |
KBS | K-Brief in Encrypted format | TCC's Set-Based Thinking™ Tools |
KBZ | K-Brief in Compressed format | TCC's Set-Based Thinking™ Tools |
KCL | Lisp source code | Kyoto Common Lisp |
KD | Koara Document | Koara |
KDB | KeePass 1.x database file | KeePass |
KDBX | KeePass 2.x database file | KeePass |
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 | |
KEY | Keynote | iOS devices, Macintosh |
KFN | complex music format|[2] | Karafun Karaoke(R) |
KFX | Kofax Group | GCGW |
KIT | Power Chords drum kit file | Power Chord |
KMC | KatzReview's MegaCrammer | |
KML | Kedit Macro Library Keyhole Markup Language |
Kedit Google Earth |
KMY | data | KMyMoney |
KMZ | Keyhole Markup Language (Zip compressed) | Google Earth |
Knn | Database key file | Clarion |
KNO | Personal Knowbase data file | Personal Knowbase |
KO | linux kernel object file | linux kernel |
KODU | Kodu game save file | Kodu Game Lab |
KPL | source code | Phrogram |
KPP | Toolpad | SmartPad |
KPS | IBM KIPS bitmap graphics | |
KR1 | Kurzweil 2000 sample file | AWAVE |
KR2 | Kurzweil 2000 sample file | AWAVE |
KRZ | Kurzweil K2000 File | Kurzweil |
KS | Source code | KonsolScript Document |
KS3 | Data | 3D Forgastest Editor object |
KSM | Pfaff Embroidery Format | Embroidermodder |
KTU | Know The Unknown Online Service Packs | Unknownsoft |
KWB | Knowledge WorkBench | Prodeo |
KYB | Keyboard mapping | FTP Software PC/TCP |
L
Ext. | Description | Used by |
---|---|---|
L | LEX source code file | |
L | Linker directive file | WATCOM wlink |
L | LISP source code file | |
LA0 | Datafile | SCUMM index file |
LAB | Datafile | NCSS - SOLO |
LAB | Mailing labels | Q+E for Microsoft Excel |
LAN | Erdas image file | |
LAN | LAN Drivers | Novell NetWare |
LANG | Language file | Minecraft, Skype |
LAS | Lasso File | Lasso Programming Language File |
LASSO | Lasso File | Lasso Programming Language File |
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 | .LBR Archive | for CP/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 | Microsoft Access |
LDF | Data filer form | IBM Works for OS/2 |
LDF | Library definition file | Geoworks Glue |
LDT | Labordatenträger, an xDT application | Healthcare providers in Germany |
LE | DOS/4GW executable image | DOS/4GW PM 32X DOS Extender |
LES | Lesson (check *.cbt) | |
LEV | Level file | NetHack 3.x |
LEX | Dictionary | Microsoft Word - Lexicon |
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 | LHA Archive | LHA/LHARC, Total Commander |
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 | Microsoft E-book file | Microsoft Reader |
LIT | Web3D File | Web3D |
LIX | Log file (history) | Audit Command Language (ACL) |
LJ | Text file for HP LJ II printer | |
LL | LLVM Assembly Language | llvm |
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 | Lock On: Modern Air Combat |
LPC | Printer driver | TEKO |
LRC | 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 |
LS | LiveScript source code file | |
LSA | Lightscape Technologies ASCII | |
LSB | Lightscape Technologies Binary | |
LSC | Leostream Connect file | Leostream Corporation |
LSP | LISP source code file | Xlisp, AutoLISP |
LSS | Spreadsheet | Legato - IBM Works for OS/2 |
LSS | SYSLINUX Splash Screen Graphic | SYSLINUX, XnView |
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 | RT-11 |
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 | modo3D software |
LXT | Temporal database file | GTKWave data file |
LY | LilyPond Notation File | LilyPond |
LYR | Lyrics (ASCII) | |
LYT | Document Layout file | Adminsoft Accounts |
LZ | Archive | Lzip |
LZD | Difference file for binaries | LDiff 1.20 |
LZH | LHA Archive | LHA/LHARC, Total Commander |
LZS | LHA Archive | LARC, Total Commander |
LZW | Archive | LHWARP |
LZX | Amiga Archive | LZX |
M–R
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S–Z
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