D File Extensions
File extensions that start with the letter
D
| Extension | File Type | File Description |
| .d00 | Audio | OPL2 FM Audio File |
| .d01 | Audio | OPL2 FM Audio File |
| .da0 | Backup | Windows Registry Backup |
| .daa | Disk | Direct-Access-Archive |
| .dat | Data | Data File |
| .db | Data | Database File |
| .db2 | Data | dBASE II Database |
| .dbf | Data | Database File |
| .dbk | Backup | dBASE Database Backup |
| .dbt | Text | Database Text File |
| .dbx | Misc | Outlook Express E-mail Folder |
| .dbx | Data | Visual FoxPro Table |
| .dc1 | Misc | Bloomba E-mail Message |
| .dcr | Image | Kodak RAW image |
| .dcs | Image | Digital Color Separation File |
| .dd | Compressed | DiskDouber Archive |
| .ddb | Image | Device Dependent Bitmap |
| .dds | Image | DirectDraw Surface |
| .dek | Misc | Flashcard Deck |
| .dek | Executable | Batch Processing Command File |
| .dem | Misc | Digital Elevation Model |
| .des | Data | QuickBooks Forms Template |
| .dev | System | Windows Device Driver |
| .dex | Data | Excel Spreadsheet |
| .dfont | Font | Mac OS X Data Fork Font |
| .dgc | Misc | TurboTax Tax Form |
| .dib | Image | Device Independent Bitmap Image |
| .dic | Misc | Dictionary |
| .dim | Compressed | Direct Internet Message Encapsulation (DIME) |
| .dime | Compressed | Direct Internet Message Encapsulation (DIME) |
| .dir | Video | Macromedia Director Movie |
| .diz | Text | Description in Zip File |
| .djvu | Image | DjVu Image |
| .dlg | Data | Digital Line Graph |
| .dll | Data | Dynamic Link Library |
| .dlo | Plugin | 3ds Max Plug-in |
| .dmg | Disk | Mac OS X Disk Image |
| .dmo | Data | Derive Demo |
| .dmp | System | Windows Memory Dump |
| .dms | Disk | Disk Masher Image |
| .dng | Image | Digital Negative |
| .do | Web | Java Servlet |
| .doc | Text | Microsoft Word Document |
| .dot | Text | Microsoft Word Template |
| .dov | Backup | Temp File |
| .download | Web | Partially Downloaded File |
| .dpb | Misc | FaxMaster Document |
| .dpx | Image | Digital Picture Exchange File |
| .dqy | Misc | Excel Query File |
| .drv | System | Device Driver |
| .drw | Image | Drawing File |
| .dsc | Misc | CoolPix Disk Identification File |
| .dsk | Disk | Disk Image |
| .dsk | Developer | Borland Project Desktop File |
| .dsp | Developer | Developer Studio Project |
| .dss | System | DCC Active Designer File |
| .dss | Audio | Digital Speech Standard File |
| .dst | Misc | Embroidery Format |
| .dsw | Developer | Visual C++ Workspace |
| .dtd | Developer | Document Type Definition |
| .dt_ | Misc | Macintosh Data Fork |
| .dus | Misc | Readiris Font Dictionary |
| .dv | Video | Digital Video File |
| .dvd | System | DOS Device Driver |
| .dvi | Text | Device Independent Format |
| .dvr-ms | Video | Microsoft Digital Video Recording |
| .dwg | Image | AutoCAD Drawing Database |
| .dwn | Misc | Firmware Update File |
| .dwt | Web | Dreamweaver Web Page Template |
| .dxb | Image | Drawing Exchange Binary |
| .dxf | Image | Drawing Exchange Format |
| .dxr | Video | Protected Macromedia Director Movie |
| .dxs | Game | Deus Ex Saved Game |
| .dylib | Developer | Dynamic Library |