| D File Extensions |
File types with extensions that start with the letter D.
| Extension | File Type | File Summary |
| .d | Manufacturer | D Source Code File |
| .d00 | Audio | OPL2 FM Audio File |
| .d01 | Audio | OPL2 FM Audio File |
| .d2v | Video | DVD2AVI File |
| .d3d | 3D Image | Game Maker 3D File |
| .d3v | Video | Datel Video File |
| .d64 | Disk Image | Commodore 64 Disk Image |
| .d88 | Disk Image | Toshiba Pasopia 7 Disk File |
| .da0 | Backup | Windows Registry Backup File |
| .da2 | Data | DeepAnalysis Save File |
| .da2 | Misc | Ad-Aware License File |
| .daa | Disk Image | PowerISO Direct-Access-Archive |
| .dae | 3D Image | Digital Asset Exchange File |
| .daf | Data | Digital Anchor File |
| .dal | Misc | Download Accelerator Plus URL List |
| .dal | Data | DVD-lab Project File |
| .dam | Data | DeltaMaster Analysis Model |
| .dao | Disk Image | Disk at Once CD/DVD Image |
| .dap | Misc | Download Accelerator Plus Partial Download |
| .dap | Web | Access Data Access Page |
| .dar | Compressed | DAR Disk Archive |
| .das | Data | DeltaMaster Analysis Session |
| .dat | Game | SimCity 4 Game Data File |
| .dat | Misc | Exchange E-mail Attachment |
| .dat | Data | Data File |
| .dat | Game | Minecraft Server Data File |
| .dat | Video | VCD Video File |
| .data | Data | Analysis Studio Offline Data File |
| .dav | Video | DVR365 Video File |
| .dax | Disk Image | PSP Compressed ISO Disc Image |
| .dazip | Game | Dragon Age: Origins Game File |
| .db | Game | X-Ray Engine Database |
| .db | Misc | Windows Thumbnail Cache |
| .db | Database | Database File |
| .db2 | Database | dBASE II Database |
| .db3 | Database | SQLite Database File |
| .dba | Backup | Palm Datebook Backup File |
| .dbb | Settings | Skype User Information File |
| .dbc | Database | FoxPro Database |
| .dbd | Data | DemoShield Project |
| .dbf | Data | FoxPro Table |
| .dbf | Database | Database File |
| .dbg | Settings | FoxPro Debugger Configuration |
| .dbk | Backup | dBASE Database Backup |
| .dbk | Backup | Sony Ericsson Mobile Phone Backup File |
| .dbm | Web | ColdFusion Server File |
| .dbml | Manufacturer | Visual Studio OR Design File |
| .dbo | Manufacturer | DarkBASIC Object |
| .dbproj | Manufacturer | Visual Studio Database Project File |
| .dbt | Database | Database Text File |
| .dbv | Database | Database Variable Field |
| .dbx | Data | Visual FoxPro Table |
| .dbx | Misc | Outlook Express E-mail Folder |
| .dbx | Plugin | AutoCAD Database Extension File |
| .dc | CAD | DesignCAD Design File |
| .dc1 | Misc | Bloomba E-mail Message |
| .dc2 | CAD | DesignCAD 2D ASCII Drawing |
| .dc2 | Raster Image | Kodak Photo-Enhancer File |
| .dc3 | CAD | DesignCAD 3D ASCII Drawing |
| .dc4 | Encoded | ViaThinkSoft (De)Coder 4 File |
| .dcd | Encoded | DisCryptor Encrypted Database |
| .dcd | CAD | DesignCAD Drawing |
| .dce | Video | DriveCam Video |
| .dcf | Data | Document Computation Format |
| .dcf | Disk Image | Disk Copy Fast Disk Image File |
| .dcf | Audio | DRM Content Format File |
| .dcf | Encoded | DisCryptor Encrypted Archive |
| .dck | Video | Resolume Deck File |
| .dcl | Settings | AutoCAD Dialog Definition File |
| .dcl | Data | DumpSec Report File |
| .dcm | Data | DiskCatalogMaker Catalog File |
| .dcm | Raster Image | DICOM Image File |
| .dcm | Audio | DCM Audio Module |
| .dcmd | Data | DiskCatalogMaker Thumbnail-Enabled Catalog |
| .dco | Encoded | DisCryptor Encrypted Virtual Disk Archive |
| .dcover | Misc | Disc Cover File |
| .dcp | Manufacturer | Delphi Compiled Package |
| .dcp | Settings | Adobe DNG Camera Profile |
| .dcpf | Data | Disc Copier Project File |
| .dcpr | Data | Adobe DNG Camera Profile Recipe File |
| .dcr | Raster Image | Kodak RAW Image File |
| .dcr | Web | Shockwave Media File |
| .dcs | Vector Image | Desktop Color Separation File |
| .dcst | Settings | Adobe InDesign Document Presets File |
| .dct | Audio | Dictation Audio File |
| .dct | Data | AutoCAD Dictionary File |
| .dct | Misc | Dictionary File |
| .dct | Database | FoxPro Database Memo |
| .dctmp | Misc | DC++ Partially Downloaded File |
| .dcu | Manufacturer | Delphi Compiled Unit |
| .dcx | Database | FoxPro Database Index |
| .dcx | Raster Image | Zsoft Multi-Page Paintbrush File |
| .dcx | Page Layout | FAXserve Fax Document |
| .dd | Compressed | DiskDouber Archive |
| .ddat | Video | DivX Temporary Video File |
| .ddb | Raster Image | Device Dependent Bitmap |
| .ddc | Data | DivX Descriptor File |
| .ddcx | Data | DivX Descriptor 2 File |
| .ddf | Settings | Diamond Directive File |
| .ddrw | Vector Image | ClarisDraw Drawing |
| .dds | Raster Image | DirectDraw Surface |
| .ddt | Game | Football Manager Keep Player Data File |
| .ddt | Data | Diagram Designer Template |
| .ddt | Audio | Jill of the Jungle Music File |
| .deb | Compressed | Debian Software Package |
| .dec | Manufacturer | Declaration File |
| .ded | Vector Image | Dr. Engrave Document |
| .def | Spreadsheet | SmartWare II Data File |
| .def | Manufacturer | Module-Definition File |
| .dek | Executable | Eavesdropper Batch File |
| .dek | Misc | Memorize-It Flashcard Deck |
| .dem | Game | Video Game Demo |
| .dem | GIS | Digital Elevation Model |
| .des | 3D Image | Corel Designer File |
| .des | Data | QuickBooks Forms Template |
| .des | CAD | Pro/DESKTOP CAD File |
| .design | Vector Image | Microsoft Expression Design Drawing |
| .desklink | System | Desktop Shortcut |
| .desktop | Misc | Desktop Entry File |
| .dev | System | Windows Device Driver File |
| .dev | Manufacturer | Dev-C++ Project File |
| .dewf | Audio | SoundEdit Recorded Instrument |
| .dex | Data | DEXIS Digital X-ray File |
| .dex | Spreadsheet | Excel Spreadsheet |
| .dex | Manufacturer | Dalvik Executable File |
| .df1 | Manufacturer | Omnis Native Datafile |
| .df2 | Audio | Defractor 2 Instrument |
| .dfc | Audio | Defractor Instrument |
| .dff | 3D Image | RenderWare Model File |
| .dfm | Manufacturer | Delphi Form |
| .dfm | Data | Midas ViewPoint Display Form |
| .dfont | Font | Mac OS X Data Fork Font |
| .dfp | Plugin | Fusion Plugin File |
| .dfproj | Data | DVD Flick Project |
| .dft | CAD | Solid Edge Draft Document |
| .dfx | CAD | Drafix CAD File |
| .dgb | CAD | FlashCAD Drawing Database |
| .dgc | Misc | TurboTax Tax Form |
| .dgc | Compressed | DGCA File Archive |
| .dgk | CAD | Delcam 3D Model File |
| .dgn | CAD | MicroStation Design File |
| .dgs | Text | Dagesh Pro Document |
| .dgs | Data | 3D Screen Creator Scene File |
| .dhtml | Web | Dynamic HTML file |
| .diagcab | System | Troubleshooting Pack Cabinet File |
| .diagcfg | System | Troubleshooting Pack Configuration File |
| .diagpkg | System | Troubleshooting Pack File |
| .dib | Raster Image | Device Independent Bitmap File |
| .dic | Misc | Dictionary File |
| .dicproof | Settings | Microsoft Dictionary Proofing File |
| .dif | Game | MAME CHD Diff File |
| .dif | 3D Image | Torque Game Engine Model File |
| .dif | Data | Data Interchange Format |
| .dif | Video | Digital Interface Format |
| .dig | Audio | Digilink Audio File |
| .dig | Audio | Sound Designer Audio File |
| .dii | Data | Summation Batch Load File |
| .dim | Encoded | DIME File |
| .dime | Encoded | Direct Internet Message Encapsulation File |
| .dinfo | Settings | DivX Temporary Video Info File |
| .dir | Video | Adobe Director Movie |
| .directory | Settings | KDE Folder View Properties File |
| .disco | Web | DISCO Discovery Document |
| .discomap | Web | DISCO Discovery Output File |
| .disk | Disk Image | Linux Virtual Hard Disk |
| .diskdefines | Misc | Linux LiveCD Information File |
| .dist | Compressed | Mac OS X Distribution Script |
| .div | GIS | DIVA-GIS Project File |
| .divx | Video | DivX-Encoded Movie File |
| .dix | GIS | DIVA-GIS Export File |
| .diz | Text | Description in Zip File |
| .djm | Data | Dynojet Map File |
| .djv | Raster Image | DjVu Image |
| .djvu | Raster Image | DjVu Image |
| .dke | Misc | DriveLock FDE Disk Key File |
| .dl | Game | Zoo Tycoon 2 Data File |
| .dlc | Encoded | Download Link Container File |
| .dld | Executable | EdLog Compiled Program |
| .dlg | GIS | Digital Line Graph |
| .dll | Web | DLL Dynamic Web Page |
| .dll | System | Dynamic Link Library |
| .dlm | Misc | Akamai Download Manager File |
| .dlo | Plugin | 3ds Max Plug-in |
| .dls | Audio | Downloadable Sounds File |
| .dlu | Plugin | 3ds Max Utility Plug-in File |
| .dlv | CAD | CATIA 4 Export File |
| .dlx | Video | Sony VDU Video File |
| .dlx | System | Renamed DLL File |
| .dm | Audio | DRM Delivery Message |
| .dm2 | Data | Toad Data Modeler 2 File |
| .dm2 | Game | Quake 2 Demo File |
| .dmb | Video | Digital Multimedia Broadcasting File |
| .dmc | Data | Datamartist Data Canvas File |
| .dmc | Executable | Medical Manager Script |
| .dmf | Audio | Delusion Digital Music File |
| .dmf | GIS | Geosystem Digitals Map File |
| .dmg | Disk Image | Mac OS X Disk Image |
| .dmgpart | Disk Image | Mac OS X Disk Image Part |
| .dml | Web | DynaScript File |
| .dmo | Data | Movienizer Database File |
| .dmo | Data | Derive Demo |
| .dmp | System | Windows Memory Dump |
| .dms | Game | Dream Maker Script |
| .dms | Disk Image | Disk Masher Image |
| .dmsa | Audio | Music Disc Creator Project File |
| .dmse | Audio | Sound Editor Project File |
| .dmsk | Data | DivX Temporary Video Data File |
| .dmsm | Video | VideoWave Movie Project File |
| .dmsm3d | Video | VideoWave 3D Movie Project File |
| .dmsp | Data | PhotoSuite Project File |
| .dmss | Video | VideoWave SlideShow Project File |
| .dm_82 | Game | Wolfenstein 1.00 Demo Movie File |
| .dm_83 | Game | Wolfenstein 1.02 Demo Movie File |
| .dm_84 | Game | Wolfenstein 2.06 Demo Movie File |
| .dna | Backup | CA Backup and Migration Backup File |
| .dnc | Video | Windows Dancer File |
| .dnc | Data | Dance Database File |
| .dne | Text | Netica Text File |
| .dng | Raster Image | Digital Negative Image File |
| .dnl | Misc | DNAML eBook File |
| .do | Web | Java Servlet |
| .dob | Manufacturer | Visual Basic UserDocument |
| .doc | Text | WordPad Document |
| .doc | Text | Microsoft Word Document |
| .dochtml | Web | Microsoft Word HTML Document |
| .dockzip | Data | ObjectDock File |
| .docm | Text | Word Open XML Macro-Enabled Document |
| .docmhtml | Web | Microsoft Word MIME HTML Document |
| .docx | Text | Microsoft Word Open XML Document |
| .dol | Game | Gamecube Executable File |
| .dolphinview | Settings | Dolphin Folder View Settings File |
| .dot | Page Layout | Word Document Template |
| .dothtml | Web | Microsoft Word HTML Document Template |
| .dotm | Text | Word Open XML Macro-Enabled Document Template |
| .dotx | Text | Word Open XML Document Template |
| .dov | Backup | Temp File |
| .download | Web | Partially Downloaded File |
| .downloadhost | Settings | MSN Download Settings File |
| .dox | Manufacturer | Doxygen Documentation File |
| .dox | Manufacturer | Visual Basic Binary UserDocument |
| .dox | Text | MultiMate Document |
| .dp1 | Database | DataPower Database File |
| .dpb | Misc | FaxMaster Document |
| .dpd | Page Layout | Ovation Pro File |
| .dpg | Video | Nintendo DS Movie File |
| .dpk | Manufacturer | Delphi Package |
| .dpl | Manufacturer | Delphi Package Library |
| .dpm | Plugin | Pro Tools Plugin File |
| .dpn | Data | Depiction Data File |
| .dpp | Vector Image | Serif DrawPlus Drawing File |
| .dpr | Vector Image | Digital InterPlot File |
| .dpr | Manufacturer | Delphi Project |
| .dps | Settings | DivX Player 2 Skin File |
| .dpx | Raster Image | Digital Picture Exchange File |
| .dpx | Data | VASCO DIGIPASS File |
| .dqy | Database | Excel Query File |
| .dr | Misc | DRM Rights Object |
| .drc | Misc | DRM Rights Object |
| .dream | Video | Dream Animated Wallpaper File |
| .drg | Audio | I-Doser Audio Drug File |
| .drg | CAD | AllyCAD Drawing File |
| .drl | Data | Gerber Drill Rack File |
| .drm | Settings | Cubase Drum Map File |
| .drv | System | Device Driver |
| .drw | Vector Image | Drawing File |
| .drw | Vector Image | DESIGNER Drawing |
| .drwdot | CAD | SolidWorks Drawing Template |
| .ds | Audio | LMMS DrumSynth File |
| .ds | Executable | TWAIN Data Source |
| .dsb | Data | Orchida Embroidery File |
| .dsc | Misc | CoolPix Disk Identification File |
| .dsd | Settings | AutoCAD Drawing Set Description File |
| .dsd | Data | Diet Studio Data File |
| .dsf | Vector Image | Designer File |
| .dsf | Audio | Delusion Digital Sound File |
| .dsg | Game | Decker Saved Game |
| .dsg | CAD | Control Studio Document |
| .dsk | Manufacturer | Borland Project Desktop File |
| .dsk | Disk Image | Disk Image |
| .dsk | Database | Simple IDs Database |
| .dskin | Misc | DockX Skin |
| .dsm | Audio | Digital Sound Module |
| .dsn | Database | Database Source Name File |
| .dsp | Manufacturer | Visual C++ 6 Project |
| .dsp | Audio | Dynamic Studio Professional Module |
| .dss | System | DCC Active Designer File |
| .dss | Audio | Digital Speech Standard File |
| .dst | CAD | AutoCAD Sheet Set File |
| .dst | Misc | Embroidery Format |
| .dstudio | Misc | DownloadStudio Incomplete Download |
| .dsv | Text | DeSmuME Save File |
| .dsw | Settings | Visual C++ 6 Workspace File |
| .dsx | Data | Diet Studio XML File |
| .dsy | Video | Besta Video File |
| .dsy | Data | Directory Synchronizer Project File |
| .dsym | Manufacturer | Xcode Debug Symbols File |
| .dsz | Data | Orchida (OES) Embroidery File |
| .ds_store | Settings | Mac OS X Folder Settings File |
| .dt0 | GIS | DTED Level 0 File |
| .dt1 | GIS | DTED Level 1 File |
| .dt2 | Raster Image | Windows Live Messenger Emoticon Image File |
| .dt2 | GIS | DTED Level 2 File |
| .dta | Data | Chain Engineering Database |
| .dtd | Manufacturer | Document Type Definition File |
| .dtd | Data | Design Tools Draw File |
| .dtf | Misc | Domino Temporary File |
| .dtm | Audio | DigiTrakker Module |
| .dtp | Page Layout | Publish-iT Document |
| .dtr | Data | DATroniC Data Recording |
| .dts | Audio | DTS Encoded Audio File |
| .dtshd | Audio | DTS-HD Master Audio File |
| .dtw | Raster Image | Desktop Wallpaper |
| .dt_ | Misc | Macintosh Data Fork |
| .dus | Misc | Readiris Font Dictionary |
| .dv | Video | Digital Video File |
| .dv-avi | Video | Microsoft DV-AVI Video File |
| .dv4 | Video | Bosch Security Systems CCTV Video File |
| .dvd | Disk Image | CloneCD DVD Information File |
| .dvd | System | DOS Device Driver |
| .dvdmedia | Video | RipIt DVD Package |
| .dvdproj | Data | iDVD Project File |
| .dvds | Data | DVDStyler Project File |
| .dvf | Audio | Sony Digital Voice File |
| .dvi | Text | Device Independent Format File |
| .dvl | Raster Image | Virtual Library File |
| .dvo | Data | Cook’n Cookbook File |
| .dvr-ms | Video | Microsoft Digital Video Recording |
| .dvx | Video | DivX Video File |
| .dwc | Misc | Emulex DWC Firmware Update File |
| .dwd | Audio | DiamondWare Digital Audio File |
| .dwf | 3D Image | Design Web Format File |
| .dwfx | CAD | Design Web Format XPS File |
| .dwg | CAD | AutoCAD Drawing Database File |
| .dwi | Data | Dance With Intensity Song File |
| .dwl | Misc | TurboCAD Drawing Lock File |
| .dwlibrary | Misc | Paperless Document Library |
| .dwn | Misc | Firmware Update File |
| .dwp | Data | DarkWave Studio Project File |
| .dws | CAD | AutoCAD Drawing Standards File |
| .dws | Data | Adobe Dreamweaver Site Cache File |
| .dwt | Web | Dreamweaver Web Page Template |
| .dwt | CAD | AutoCAD Drawing Template |
| .dwz | Data | DVD MovieFactory Project File |
| .dx | Text | DEC WPS Plus File |
| .dxb | Vector Image | Drawing Exchange Binary |
| .dxe | CAD | AutoCAD Data Extraction Template |
| .dxf | CAD | Drawing Exchange Format File |
| .dxp | Settings | CDBurnerXP Data Disc Compilation File |
| .dxr | Video | Protected Macromedia Director Movie |
| .dxs | Game | Deus Ex Saved Game |
| .dxx | CAD | AutoCAD Drawing Interchange Attribute File |
| .dyc | System | Xerox Printer Driver Configuration File |
| .dylib | Manufacturer | Mach-O Dynamic Library |
| .dzm | Video | DirectorZone Menu Template |
| .dzp | Video | DirectorZone Particle Effect File |
| .dzt | Video | DirectorZone Title File |