| .DAE | Sony | Ficheiros de Imagem 3D | Digital Asset Exchange File | Adobe Photoshop CC | Adobe Systems Incorporated |
| .DATA | Appricon | Ficheiros de Dados | Analysis Studio Offline Data | Adobe Soundbooth | Adobe Systems Incorporated |
| .DBF | dBase, LLC | Ficheiros de Base de Dados | Database File | JetForm FormFlow | Adobe Systems Incorporated |
| .DBM | Adobe Systems Incorporated | Ficheiros Web | ColdFusion Server File | Adobe ColdFusion Builder | Adobe Systems Incorporated |
| .DC2 | Kodak | Ficheiros de Imagem Raster | Kodak Digital Camera RAW Image File | Adobe Photoshop | Adobe Systems Incorporated |
| .DCM | National Electrical Manufacturers Association (NEMA) | Ficheiros de Imagem Raster | DICOM Image File Format | Adobe Photoshop | Adobe Systems Incorporated |
| .DCP | Embarcadero Technologies | Ficheiros de Desenvolvedor | Delphi Compiled Package | Adobe Photoshop CC | Adobe Systems Incorporated |
| .DCS | Quark Software Inc. | Ficheiros de Imagem de Vetor | Desktop Color Separation File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .DCX | ZSoft Corporation | Ficheiros de Imagem Raster | Zsoft Multi-Page Paintbrush File | Adobe Photoshop | Adobe Systems Incorporated |
| .DDS | Microsoft Corporation | Ficheiros de Imagem Raster | DirectDraw Surface | Adobe Photoshop | Adobe Systems Incorporated |
| .DEU | Adobe Systems Incorporated | Ficheiros de Dados | Adobe Reader German Language File | Adobe Reader | Adobe Systems Incorporated |
| .DFM | Open Source | Ficheiros de Texto | Pascal File | ExtendScript Toolkit (ESTK) | Adobe Systems Incorporated |
| .DHY | Adobe Systems Incorporated | Ficheiros de Dados | Adobe Bridge Information File | Adobe Bridge CC | Adobe Systems Incorporated |
| .DIB | The GIMP Development Team | Ficheiros de Imagem Raster | Device Independent Bitmap File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .DIM | Active@ Data Recovery Software | Ficheiros de Cópia de Segurança | Active@ Raw Disk Image Backup File | Adobe Dimensions | Adobe Systems Incorporated |
| .DIR | Adobe Systems Incorporated | Ficheiros de Vídeo | Adobe Director Movie | Adobe Director | Adobe Systems Incorporated |
| .DLG | Crytek | Ficheiros de Jogo | Crysis Dialogue Data File | ExtendScript Toolkit (ESTK) | Adobe Systems Incorporated |
| .DLM | AKAMAI | Uncommon Files | Akamai Download Manager File | Adobe Creative Cloud | Adobe Systems Incorporated |
| .DLV | Dassault Systèmes | Ficheiros CAD | CATIA 4 Export File | Adobe Acrobat DC | Adobe Systems Incorporated |
| .DLX | DIAL | Ficheiros CAD | DIALux Document | Adobe Premiere Pro CC | Adobe Systems Incorporated |
| .DMV | Adobe Systems Incorporated | Ficheiros de Configurações | Adobe Acrobat Catalog Data | Adobe Acrobat DC | Adobe Systems Incorporated |
| .DNG | Adobe Systems Incorporated | Ficheiros Raw de Câmera | Digital Negative Image File | Adobe Photoshop Elements | Adobe Systems Incorporated |
| .DOG | Ubisoft Blue Byte | Ficheiros de Jogo | Dogz Dog Description File | Adobe Photoshop Elements | Adobe Systems Incorporated |
| .DPX | Kodak | Ficheiros de Imagem Raster | Digital Picture Exchange File | Adobe SpeedGrade | Adobe Systems Incorporated |
| .DRT | Micrografx | Ficheiros Gráficos | Micrografix Windows Draw Template File | Adobe Director | Adobe Systems Incorporated |
| .DRX | Adobe Systems Incorporated | Ficheiros de Dados | Adobe Photoshop Tutorial Data | Adobe Photoshop | Adobe Systems Incorporated |
| .DV | Roxio | Ficheiros de Vídeo | Digital Video File | Adobe Flash Professional CC | Adobe Systems Incorporated |
| .DWG | Autodesk, Inc. | Ficheiros CAD | AutoCAD Drawing Database File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .DWS | Autodesk, Inc. | Ficheiros CAD | AutoCAD Drawing Standards File | Adobe Dreamweaver | Adobe Systems Incorporated |
| .DWT | Adobe Systems Incorporated | Ficheiros Web | Dreamweaver Web Page Template | Adobe Dreamweaver | Adobe Systems Incorporated |
| .DXF | Autodesk, Inc. | Ficheiros CAD | Drawing Exchange Format | Adobe Illustrator CC | Adobe Systems Incorporated |
| .DXR | Adobe Systems Incorporated | Ficheiros de Vídeo | Protected Macromedia Director Movie | Adobe Director | Adobe Systems Incorporated |
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