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File extensions that begin with D.

Ext.  Type of file

DAT   Data
DAT   WordPerfect merge data

DB    DNS zone file
DB    Paradox table
DBF   dBASE database
DBS   DeBabilizer script
DBT   dBASE text
DBX   DATABEAM bitmap

DCA   IBM text
DCM   DICOM medical image
DCR   Shockwave movie
DCS   Color separated EPS format
DCT   Dictionary
DCX   Intel fax image

DEB   Debian Linux file
DEF   Definition
DES   Corel DESIGNER vector graphics
DEX   Dalvik executable file

DFF   DSD download without metadata

DG    Autotrol vector graphics
DGN   Intergraph vector graphics

DIB   Windows DIB bitmap
DIC   Dictionary
DIF   Spreadsheet
DIR   Shockwave source
DIVX  DivX

DJV   Deja Vu document
DJVU  Deja Vu document

DLG   Dialogue script
DLL   Dynamic link library
DL_   Compressed DLL

DMG   Mac disk image

DNG   Digital Negative (RAW)
DNL   DNL Reader e-book

DOC   Document (Word and others)
DOCM  OpenXML Word with macro
DOCX  OpenXML Word
DOT   Word template
DOTM  OpenXML Word template & macro
DOTX  OpenXML Word template
DOX   MultiMate V4.0 document

DPI   Pointline bitmap

DRV   Driver
DRW   Designer 2.x, 3.x vector graphics

DS    TWAIN data source
DS4   Designer 4.x vector graphics
DSF   Designer 6.x, 7.x vector graphics
DSF   DSD download with metadata
DST   Micrografx template

DTP   Desktop publishing file

DVI   TeX output (Device Independent)

DWF   Design Web Format (3D CAD viewer)
DWG   AutoCAD vector format

DX    Autotrol document imaging
DXF   AutoCAD vector format

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