Whenever a file of computer we open or run it has an extension after dot(.). That define the type of file and which program or software is responsible to open it. The responsible software interpret its coded to us.For example: a song file named as " Its my life.mp3" means it is under .mp3 file extension and this is a music file and can be run via a music software like windows media player. If a file is named as "rohan.txt" then this is a text file and can be opened by text software like notepad. Here i am to explain all the file extension used by computer. In this post just A-D. and rest of the extension will be the next posts.
| A | ||
| a | library (unix) | |
| .ad | screen saver data (AfterDark) | |
| .adi | graphics (AutoCAD) | |
| .adl | MCA adapter description library (QEMM) | |
| .afi | Truevision bitmap graphics | |
| .afm | Type 1 font metric ASCII data for font installer (ATM - many) | |
| .all | format file for working pages (Always) | |
| .all | general printer information (WordPerfect for Win) | |
| .ani | animation (Presidio - many) | |
| .anm | animation (Deluxe Paint Animator) | |
| .ans | ANSI graphics (character animation) | |
| .ans | ASCII text ANSI character set (NewWave Write) | |
| .asc | ASCII text file | |
| .avi | Audio Video Interleaved animation file (Video for Windows) | |
| B | |
| bak | backup file |
| .bas | BASIC source code file |
| .bat | batch file (DOS) |
| .bbm | brush (Deluxe Paint) |
| .bbs | Bulletin Board System announce or text info file |
| .bch | batch process object file (dBASE Application Generator) |
| .bcp | Borland C++ makefile |
| .bdf | Bitmap Distribution Format font file (X11) |
| .bga | bitmap graphics |
| .bib | bibliography (ASCII) |
| .bib | database - not compatible with TeX format (Papyrus) |
| .bib | literature database (TeX/BibTeX) |
| .bif | Binary Image Format b&w graphics (Image Capture board) |
| .bin | binary file |
| .bio | OS2 BIOS |
| .bit | bitmap X11 |
| .bm | BitMap graphics |
| .bmk | Help Bookmarks (Windows 3.x) |
| .bmp | BitMaP graphics (PC Paintbrush - many) |
| .bpt | bitmap fills file (CorelDRAW) |
| .btm | Batch To Memory batch file (4DOS) |
| .bup | backup file |
| C | |
| .c | C source code file |
| .c | compressed unix file archive created by COMPACT |
| .c++ | C++ source code file |
| .cal | calendar file (Windows 3.x) |
| .cal | spreatsheet (SuperCalc) |
| .cbl | COBOL source code file |
| .cbm | compiled bitmap graphics (XLib) |
| .cbt | Computer Based Training (many) |
| .cc | C++ source code file |
| .ceg | bitmap graphics (Tempra Show - Edsun Continuous Edge Graphics) |
| .cga | CGA display font (Ventura Publisher) |
| .chk | recovered data (DOS CHKDSK) |
| .chk | temporary file (WordPerfect for Win) |
| .clp | clip art graphics (Quattro Pro) |
| .clp | clipboard file (Windows 3.x) |
| .cls | C++ class definition file |
| .cmd | batch file (OS/2) |
| .cmd | command (dBASE - Waffle) |
| .cmd | external command menu (1st Reader) |
| .cpp | C++ source code file |
| .cpp | presentation (CA-Cricket Presents) |
| .cpt | compressed Mac file archive created by COMPACT PRO (ext-pc.zip) |
| .cur | cursor image file (Windows 3.x) |
| D | |
| .dat | data file in special format or ASCII |
| .dbd | debug info (Clarion Modula-2) |
| .dbg | symbolic debugging information (MS C/C++) |
| .dcf | disk image file |
| .dd | compressed Macintosh file archive created by DISKDOUBLER |
| .deb | DEBUG script (DOS Debug) |
| .def | defaults - definitions |
| .dem | demonstration |
| .dem | graphics (VistaPro) |
| .dgs | diagnostics |
| .dic | dictionary |
| .dir | directory file (VAX) |
| .diz | description file (Description In Zip) |
| .dlg | dialog resource script file (MS Windows SDK) |
| .dll | Dynamic Link Library (Windows 3.x - OS/2) |
| .dll | export/import filter (CorelDRAW) |
| .dmp | dump file (eg. screen or memory) |
| .doc | document text file |
| .dos | network driver (eg. pkt_dis.dos) |
| .dos | text file containing DOS specific info |
| .drv | device driver eg. for printer |
| .dsk | project desktop file (Borland C++ - Turbo Pascal) |
| .dss | screensaver file (DCC) |
