File Name Extensions
The following file extensions are generally in use, typically consisting of three letters as derived from DOS naming conventions:
| Ext. | Type | Meaning | Annotations | |
|---|---|---|---|---|
| 7z | compr. files | 7-Zip | native format of 7-Zip (Freeware) | |
| ai | graphics | Adobe Illustrator | native format of Adobe | |
| aif | audio | Audio Interchange File | especially for Mac and SGI Motorola Byte Ordering |
|
| arj | compr. files | |||
| avi | audio video |
Audio Video Interleaved | standard video format for Windows | |
| bak | arbitrary | BAcKup | backup copies | |
| bat | text | BATch | batch files commonly ASCII or ANSI text |
|
| bin | data | BINary File | binary data, "BLOBs" | |
| bmp | picture | BitMaP | MS Windows, OS/2 | |
| bz | compr. file | BZip2 | file compressed in the BZIP2 format BZIP2  ] |
|
| bz2 | compr. file | BZip2 | file compressed in the BZIP2 format BZIP2 ] |
|
| cab | data | CABinet | Microsoft | |
| com | program | COMmand | MS DOS | |
| cfg | text | ConFiG | configuration files | |
| cgi | text | Common Gateway Interface | script files | |
| class | text | java CLASS | ||
| cpp | text | C++ | C++ source code | |
| dll | program | Dynamic Link Library | Windows | |
| doc | text | DOCument | MS Word, WordPerfect, WordStar | |
| drv | program | DRiVer | device driver | |
| dxf | graphics | Data eXchange File | AutoCad | |
| exe | program | EXEcutable | MS Windows, DOS | |
| fh5 | graphics | FreeHand 5 | Macromedia Freehand 5.x | |
| fh7 | graphics | FreeHand 7 | Macromedia Freehand 7.x | |
| fh8 | graphics | FreeHand 8 | Macromedia Freehand 8.x | |
| gif | picture | Graphic Interchange Format | GIF ] |
|
| gz | compr. file | GZip | native format of GZIP especially Unix GZIP ] |
|
| hex | files | BinHex encoded files incl. resource info (MacOS) | ||
| hqx | files | BinHex encoded files incl. resource info (MacOS) | ||
| hlp | HeLP | help files, especially Windows | ||
| htm | text | HyperText Markup language | ||
| html | text | HyperText Markup Language | ||
| ico | picture | ICOn | Microsoft Windows icon file | |
| ini | text | INItilization | initilazation data, mostly text | |
| j2k | picture | Joint photographic experts group 2000 | JPEG-2000 picture | |
| jar | program | Java ARchive | compressed java applets | |
| jif | picture | Jpeg Interchange Format | JPEG picture JPEG ] |
|
| jff | picture | Jpeg File interchange Format | JPEG picture JPEG ] |
|
| jng | picture | Jpeg Network Graphics | file format basing on JPEG, equivalent to PNG, but not compatible to JPEG file formats JPEG ] |
|
| jp2 | picture | Joint Photographic experts group 2000 | JPEG-2000 picture | |
| jpeg | picture | Joint Photographic Experts Group | JPEG picture JPEG ] |
|
| jpg | picture | Joint Photographic experts Group | JPEG picture JPEG ] |
|
| lib | data | LIBrary | library file; contents or program | |
| log | data | LOG | log data; commonly text | |
| lzh | compr. files | native format of LHA and LHARC | ||
| lnk | text | LiNK | links, MS Windows | |
| mid | data | MIDi | Midi data | |
| mov | audio video |
MOVie | general for video; also usable for MPEG MPEG ] |
|
| mp2 | audio | MPeg 2 | MPEG 1 Layer II MPEG-1 Audio ] |
|
| mp3 | audio | MPeg 3 | MPEG 1 Layer III MPEG-1 Audio ] |
|
| mpg | audio video |
Motion Picture expert Group | MPEG ] |
|
| mpeg | audio video |
Motion Picture Expert Group | MPEG ] |
|
| ora | data | ORAcle | Oracle configuration data | |
| out | data | default extension of BUNZIP2 or "BZIP2 -d" respectively BZIP2 ] |
||
| hybrid data | Portabel Document Format | according to Adobe Acrobat; text, fonts, graphics, etc. | ||
| pgp | data | Pretty Good Privacy | encrypted data | |
| png | picture | Portable Network Graphics | ||
| ps | graphics | PostScript | ||
| psp | picture | Paint Shop Pro | ||
| ppt | data | Power PoinT | Microsoft Power Point presentation | |
| qt | audio video |
Quick Time movie | ||
| qtm | audio video |
Quick Time Movie | ||
| qxd | Layout | Quark Xpress Document | ||
| rtf | text | Rich Text Format | ASCII text plus formats in a special ASCII notation | |
| scr | program | SCReensaver | screen saver Windows | |
| sgml | text | Standard Generalized Markup Language | ||
| sea | compr. files | Self Exracting Archive | ||
| sit | compr. files | STuffIt | ||
| tar | Dateien | Tape ARchive | sequential collection of uncompressed files | |
| tar.gz | compr. files | Tape ARchive.GZib | TAR archive compressed by GZIP ("Tarball") GZIP ] |
|
| taz | compr. files | TAr gZip | TAR archive compressed by GZIP ("Tarball") GZIP ] |
|
| tbz | compr. files | Tar BZip2 | TAR-file compressed in the BZIP2 format BZIP2 ] |
|
| tbz2 | compr. files | Tar BZip2 | TAR-file compressed in the BZIP2 format BZIP2 ] |
|
| tga | picture | TarGA | targa file format | |
| tgz | compr. files | Tar Gzip | TAR archive compressed by GZIP ("Tarball") GZIP ] |
|
| tif | picture | Tag Image File Format | ||
| tiff | picture | Tag Image File Format | ||
| tmp | data | TeMPorary | tempory files | |
| ttf | Schrift | True Type Font | especially Windows | |
| txt | text | TeXT | unformatted plain text | |
| uu | Dateien | UU-Encoded | UU encoded data | |
| uue | Dateien | UU-Encoded | UU encoded data | |
| vrml | VR | Virtual Reality Modelling Language | ||
| wav | audio | WAVe | especially Windows | |
| wmf | picture | Windows MetaFile | ||
| wp | text | WordPerfect Document | Wordperfect document, especially for older versions | |
| wpd | text | WordPerfect Document | ||
| xls | Tabellen | eXceL workSheet | MS-Excel file | |
| zip | compr. files | ZIP ] |
||
| z | compr. files | gZip | TAR archive compressed by GZIP ("Tarball") GZIP ] |
|
