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