List of filename extensions / 0–9
This list contains common file name extensions that are used in some operating systems to differentiate between file formats . In other operating systems, file type identification is mainly carried out using the file header, and the MIME type is more important than the file name extension for e-mail attachments . Systems that use the latter two approaches usually ignore the extension completely.
| Filename extension | MIME type | Full name | Remarks, usage |
|---|---|---|---|
| . # 01,. # 02, ... | - | Numbered images of a scanned roll of film | |
| . $$$ | - | Use with OS / 2 to mark archived files | |
| . @@@ | - | Documentation for programs such as Microsoft Codeview | |
| ~ | - | Backup file ( Unix / Linux ) | |
| . ~ $ ~ | Temporary file | 1ST reader | |
| . ~ ap | Ap pExpert project database file | Borland C ++ 4.5 | |
| . ~ de | Project backup file | Borland C ++ 4.5 | |
| . ~ mn | M e n u backup | Norton Commander | |
| . ~ pr | Pr oject backup file | Terramodel | |
| .0 | Data file | GEOWorks | |
| .01 | Video file | second file if the file size of 2 GB for .ts files is exceeded, see there | |
| .000 | Compressed file | Microsoft DoubleSpace and Microsoft DriveSpace | |
| .000, ..., .999 | "DOS file name extension" of any Geos file (file name, icon, type, ... are saved in the file and displayed in Geos instead of the "DOS name") | PC / GEOS | |
| .000, ..., .20009 | - | For numbering backup copies of files; also used to associate various related data with specific users | |
| .001 | NetWare Unicode Rule Table File | Novell NetWare | |
| .001 | Datanorm (data) | Data file with description texts and prices from wholesalers and suppliers | |
| .04 | Data file | ElsterFormular 2004/2005 files ( ELSTER online tax return from the tax offices) | |
| .05 | Data file | ElsterFormular 2005/2006 files ( ELSTER online tax return from the tax offices) | |
| .06 | Data file | ElsterFormular 2006/2007 files ( ELSTER online tax return from the tax offices) | |
| .07 | Data file | ElsterFormular 2007/2008 files ( ELSTER online tax return from tax offices) | |
| .1, ..., .999 | Database index | Superbase | |
| .1-step | Backup file | Iomega backup | |
| .113 | Backup file (data) | Iomega backup | |
| .123 | Lotus 123 97 file | table | |
| .12m | Smartmaster file | Lotus 1-2-3 '97 | |
| .1st | Documenting wizard list | Microsoft Visual FoxPro | |
| .02 | Video file | third file if the file size of 2 GB for .ts files is exceeded, see there | |
| .201 | StarMoney BPD File (Windows) | ||
| .210 | StarMoney BPD File (Windows) | ||
| .22 | StarMoney BPD File (Windows) | ||
| .220 | StarMoney BPD File (Windows) | ||
| .23 | StarMoney BPD File (Windows) | ||
| .24 | StarMoney BPD File (Windows) | ||
| .25 | StarMoney BPD File (Windows) | ||
| .263 | - | Video elementary stream compressed with H.263 | |
| .264 | - | Video elementary stream compressed with H.264 | |
| .2d | 2D drawing | VersaCAD [1] | |
| .2dm | 3D terrain model | SMS | |
| .2gr, .3gr | VGA size aphics driver / configuration | Microsoft Windows | |
| .300 | StarMoney BPD File (Windows) | ||
| .32x | - | ROM file of a Sega 32X module | |
| .386 | - | Linear Executable (LE) (VXD - DOS Extender; file for use with 80386 CPUs | |
| .3d | 3 - d imens. drawing | VersaCAD [2] | |
| .3dmf | x-world / x-3dmf | 3D M eta f ile | QuickDraw 3D |
| .3dm | x-world / x-3dmf | 3D M odel | McNeel Rhinoceros 3D [3] |
| .3dmod | 3D - mod el | 3D ModelAchitect, RoomArchitect [4] | |
| .3dr | 3D Mark. R esult | 3D Mark [5] | |
| .3dlib | Library for 3D models | 3D RoomAchitect [6] | |
| .3ds | 3D S tudio | Cinema4D, 3ds Max, AutoCAD | |
| .3g2 | Third G eneration Partnership 2 | Video format for mobile phones | |
| .3ga | Third G eneration Partnership A udio | Audio format for Motorola mobile phones | |
| . 3gp | Third G eneration P artnership | Video format for mobile phones | |
| .411 | Data file | Used in digital cameras | |
| .4db | Structure File | 4D (4th Dimension) | |
| .4dd | 4D D ata File | 4D (4th Dimension) | |
| .4dr | D ata R esource File | 4D (4th Dimension) | |
| .4ge | Compiled code | Informix 4GL | |
| .4gi | Compiled code | Informix 4GL, object files that are bound together by the linker to form 4ge | |
| .4gl | Source code | Informix 4GL | |
| .4bl | Source code | Informix 4GL, backup copy of 4GL when compiling | |
| .4qr | Q uick R eport | 4D (4th Dimension) | |
| .4v | Music file | Quartet | |
| .5lm | Database file | FAUST document management database file | |
| .669 | Composer 669 | Track module ( music format ) of the Composer 669 / UNIS 669 | |
| .7au | GN logger | Trace ( GN logger ) | |
| .7z | 7 - Z ip | Compressed file archive ( 7-Zip ) | |
| .8th | Source file | Assembler, identical to Microsoft assembler | |
| .8bf | Plug-in | Plug-in filters for many graphics programs, introduced by Adobe Photoshop | |
| .8bi | Plug-in | see .8bf | |
| .8ds | Plug-in | Plug-in menu (?) For Photoshop only (?) | |
| .8xp | Ti 8x P rogram | Program file for pocket calculators from Ti series 8x (82,83, ...) |