Filtillägg börjar med tecknet "L"
| FILTYP | Kategori | Filformat | |
|---|---|---|---|
| .l6t | Data Files | Linje 6 Tone Arkiv | |
| .lab | Page Layout Files | Wordperfect Label Definition File | |
| .laccdb | Microsoft Files | Microsoft Access Lock File | |
| .lang | Settings Files | Minecraft språkfil | |
| .latex | Text Files | Latex Document | |
| .lay | Multiple Use Files | DVD Studio Pro Layout Arkiv | |
| .layout | Configuration Files | Code :: Blocks arbetsyta layoutfilen | |
| .lbl | Database Files | Nicelabel mallfil | |
| .lbr | Lotus Driver Files | LU Bibliotek Arkiv | |
| .lbt | Text Files | FoxPro Label Memo | |
| .lcf | CAD Files | ArchiCAD Library Container fil | |
| .lck | Multiple Use Files | Programlåsning fil | |
| .ldb | Multiple Use Files | Microsoft Access Lock File | |
| .ldf | Data Files | SQL Server transaktionsförteckning fil | |
| .ldm | Volume Files | VolumeViz Multi-Upplösning Volym Arkiv | |
| .ldt | CAD Files | Eulumdat formaterad Armatur datafil | |
| .lemon | Compressed Files | LemonShare.net Hämta | |
| .lfo | Configuration Files | Alchemy lågfrekvensoscillator Presets Arkiv | |
| .lgo | Development Files | Logo Instruktioner Fil | |
| .lha | Compressed Files | LHARC Compressed Arkiv | |
| .lib | Microsoft Files | Generiska databiblioteket | |
| .lic | Multiple Use Files | Software License File | |
| .lip | SLIP Files | Bethesda Softworks Lip Sync File | |
| .lis | Text Files | SQR Utdatafil | |
| .list | Development Files | JAR Index Arkiv | |
| .lit | eBook Files | e-bok-fil | |
| .lix | Data Files | Logos Library System File | |
| .llb | Data Files | LabVIEW Library File | |
| .lmk | Vector Graphics Files | Sothink Logo Maker Bild | |
| .lms | Data Files | LenMus Poäng Fil | |
| .lmx | Data Files | Landmark Exchange File | |
| .lng | Language Defnition Files | Språk Application Support Arkiv | |
| .lnk | Windows System Files | Windows File Genväg | |
| .loc | Data Files | GPS Location Arkiv | |
| .localstorage | Google Files | WebKit Lokal lagring datafil | |
| .lock | Multiple Use Files | Låsfil | |
| .lod | Google Files | Heroes of Might and Magic 3 grafikfil | |
| .log | Log Files | Loggfil | |
| .log1 | Registry Files | Windows-registret Hive loggfil | |
| .lp7 | Data Files | LP7 Digitalt signerad fil | |
| .lpdb | Data Files | Librarian Pro databasfil | |
| .lpk | Package Files | ArcGIS Layer Förpackning | |
| .lqr | Compressed Files | SQ Compressed LBR Arkiv | |
| .lrcat | Data Files | Adobe Photoshop Lightroom katalogfil | |
| .lrdata | Data Files | Adobe Photoshop Lightroom datafil | |
| .lrec | Digital Video Files | Inter-Tel webbkonferens Inspelning | |
| .lrf | eBook Files | Sony Bärbar Läsar Fil | |
| .lrs | eBook Files | Librie Reader Källfil | |
| .lrtemplate | Configuration Files | Adobe Photoshop Lightroom Mall | |
| .lrx | eBook Files | Sony Bärbar Läsar Fil | |
| .lsl | Data Files | LightScribe-etikett | |
| .lsp | Development Files | Lisp program källkodsfil | |
| .lsr | Data Files | LANsurveyor Rapportera | |
| .lst | Text Files | Data List | |
| .lsu | Data Files | LANsurveyor Karta | |
| .ltr | Text Files | brev File | |
| .ltx | Text Files | Latex Document | |
| .lua | Development Files | Lua Källfil | |
| .lue | Text Files | Norton Liveupdate loggfil | |
| .luf | Text Files | Lipikar Uniform formatfil | |
| .lvm | Data Files | LabVIEW Mätning File | |
| .lvw | Data Files | Livewire Document | |
| .lw4 | Data Files | Lightwright File | |
| .lwp | Text Files | Lotus Word Pro Document | |
| .lxf | XML Data Files | LEGO Digital Designer Modell Arkiv | |
| .lxfml | Text Files | LEGO Digital Designer XML-fil | |
| .ly | Data Files | LilyPond File | |
| .lyc | CAD Files | bestIMAGE Komprimerad design fil | |
| .lyr | Multiple Use Files | ArcView Skikt Fil | |
| .lyt | Configuration Files | Xcalibur Layout File | |
| .lyx | Text Files | LyX Document | |
| .lz | Compressed Files | Lzip komprimerade filen | |
| .lzh | Compressed Files | LZH komprimerade filen | |
| .lzm | Compressed Files | slax Module | |
| .lzma | Compressed Files | LZMA komprimerade filen | |
| .lzo | Compressed Files | LZO komprimerade filen | |
| .lzx | Compressed Files | Amiga LZX komprimerade filen |