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 |
| 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 |
| 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 | 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 | 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 | |
| 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 |
| LSA | Lightscape Technologies ASCII | |
| LSB | Lightscape Technologies Binary | |
| 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) | |
| LZ | Archive | Lzip |
| LZD | Difference file for binaries | LDiff 1.20 |
| LZH | Archive | LHA/LHARC |
| LZS | Archive | LARC |
| LZW | Archive | LHWARP |
| LZX | Amiga Archive | LZX |
Read more about this topic: List Of File Formats (alphabetical)