| .P11 | HERE | Rasterbildefiler | HERE Maps For Android Map Data Package | HERE Maps | HERE |
| .P41 | Tandy | Rasterbildefiler | TRS-80 Image | Unknown Software | Unknown Developer |
| .P7 | Open Source | Rasterbildefiler | PKCS #7 Digital Certificate File | OpenSSL | Open Source |
| .PAC | NetScape | Rasterbildefiler | Proxy Auto-Config File | Internet Explorer | Microsoft Corporation |
| .PAL | Corel | Rasterbildefiler | Painter Custom Palettes File | Corel Painter | Corel |
| .PAM | Open Source | Rasterbildefiler | Portable Arbitrary Map | Adobe Photoshop | Adobe Systems Incorporated |
| .PAN | ProVUE Development | Rasterbildefiler | Panorama Database File | ProVUE Development Panorama | ProVUE Development |
| .PANO | Microsoft Corporation | Rasterbildefiler | Camera Panoramic Picture | Microsoft OneDrive | Microsoft Corporation |
| .PAP | tshsoft | Rasterbildefiler | PanoramaStudio Project File | PanoramaStudio | tshsoft |
| .PAT | Autodesk, Inc. | Rasterbildefiler | AutoCAD Hatch Pattern File | Autodesk AutoCAD | Autodesk, Inc. |
| .PATTERN | Computerinsel GmbH | Rasterbildefiler | PhotoLine Default Pattern | Photoline | Computerinsel GmbH |
| .PBM | Unknown Developer | Rasterbildefiler | Portable Bitmap Image | Microsoft Word | Microsoft Corporation |
| .PBMP | Unknown Developer | Rasterbildefiler | Renamed UNIX Portable Bitmap Graphic (PBM) File | Unknown Software | Unknown Developer |
| .PC1 | Tom Hudson | Rasterbildefiler | Degas Elite Low Res Image File | Lemkesoft GraphicConverter | Lemkesoft |
| .PC2 | Autodesk, Inc. | Rasterbildefiler | AutoCAD Plotter Configuration File | Autodesk AutoCAD | Autodesk, Inc. |
| .PC3 | Autodesk, Inc. | Rasterbildefiler | AutoCAD Plotter Configuration File | Autodesk AutoCAD | Autodesk, Inc. |
| .PCC | Electronic Arts | Rasterbildefiler | Mass Effect Package | Mass Effect 3 | BioWare |
| .PCD | PokéCheats | Rasterbildefiler | Pokémon Wonder Card File | Pokesav | PokéCheats |
| .PCX | ZSoft Corporation | Rasterbildefiler | Paintbrush Bitmap Image File | Adobe Illustrator CC | Adobe Systems Incorporated |
| .PD | SAI | Rasterbildefiler | FlexiSIGN 5 Plotter Document | FlexiSIGN | SAI |
| .PDD | Adobe Systems Incorporated | Rasterbildefiler | Adobe PhotoDeluxe Image | Adobe Illustrator CC | Adobe Systems Incorporated |
| .PDN | dotPDN LLC | Rasterbildefiler | Paint.NET Image File | Paint.NET | dotPDN LLC |
| .PE3 | Ulead Systems | Rasterbildefiler | PhotoImpact Image Archive | PhotoImpact | Corel |
| .PE4 | Ulead Systems | Rasterbildefiler | Photo Explorer Thumbnail Archive | Ulead Photo Express | Ulead Systems |
| .PEI | Performer Software | Rasterbildefiler | Performer Software Encrypted Image | Preview Gallery | Performer Software |
| .PFI | Paragon Software Group | Rasterbildefiler | Paragon Backup Index File | Paragon Backup & Recovery | Paragon Software Group |
| .PFN | Unknown Developer | Rasterbildefiler | Portable Bitmap File | XnView MP | XnSoft |
| .PG | Unknown Developer | Rasterbildefiler | PrintFox / PageFox Image File | XnView MP | XnSoft |
| .PG- | Pierre-Emmanuel Gougelet | Rasterbildefiler | JPEG Bitmap Image Format | XnView MP | XnSoft |
| .PGF | SourceForge | Rasterbildefiler | Progressive Graphics File | Lemkesoft GraphicConverter | Lemkesoft |
| .PGM | Jef Poskanzer | Rasterbildefiler | Portable Gray Map Image | Adobe Photoshop | Adobe Systems Incorporated |
| .PHP | Panic | Rasterbildefiler | PHP Source Code File | Microsoft Notepad | Microsoft Corporation |
| .PI1 | Tom Hudson | Rasterbildefiler | Degas Low Resolution Image File | Lemkesoft GraphicConverter | Lemkesoft |
| .PI2 | Portrait Innovations | Rasterbildefiler | Portrait Innovations Photo | XnView MP | XnSoft |
| .PI3 | Tom Hudson | Rasterbildefiler | Degas High Resolution Image File | Lemkesoft GraphicConverter | Lemkesoft |
| .PI4 | Atari Corporation | Rasterbildefiler | DEGAS Image | Degas | Tom Hudson |
| .PI5 | Atari Corporation | Rasterbildefiler | DEGAS Bitmap Image File | Degas | Tom Hudson |
| .PI6 | Atari Corporation | Rasterbildefiler | DEGAS Bitmap Image File | Degas | Tom Hudson |
| .PIC | John Bridges | Rasterbildefiler | Generic Picture File | ACD Systems ACDSee | ACD Systems |
| .PICON | XnSoft | Rasterbildefiler | Personal Icon File | XnView MP | XnSoft |
| .PIP | Microsoft Corporation | Rasterbildefiler | Office Personalized Settings File | Microsoft Excel | Microsoft Corporation |
| .PIX | PCI Geomatics | Rasterbildefiler | PCI Geomatics Database File | ESRI ArcGIS for Desktop | ESRI (Environmental Systems Research Institute) |
| .PIXAR | Pixar | Rasterbildefiler | Pixar Image File | Wolfram Research Mathematica | Wolfram Research |
| .PJP | Joint Photographic Experts Group | Rasterbildefiler | JPEG Image | Adobe Illustrator CC | Adobe Systems Incorporated |
| .PJPEG | Microsoft Corporation | Rasterbildefiler | Progressive JPEG Image | Adobe Photoshop | Adobe Systems Incorporated |
| .PM | IBM | Rasterbildefiler | Unix XV Graphic File | Lemkesoft GraphicConverter | Lemkesoft |
| .PM3 | Crouzet | Rasterbildefiler | Crouzet Logic Software M3 File | Crouzet M3 Soft | Crouzet |
| .PMG | Adobe Systems Incorporated | Rasterbildefiler | PageMaker Group File | Adobe InDesign | Adobe Systems Incorporated |
| .PNC | Panasonic Corporation | Rasterbildefiler | Panasonic Network Camera Image | Panasonic HD Writer AE | Panasonic Corporation |
| .PNG | The Pixelmator Team | Rasterbildefiler | Portable Network Graphics | Adobe Illustrator CC | Adobe Systems Incorporated |
| .PNL | Missler Software | Rasterbildefiler | TopSolid Nesting Module | TopSolid | Missler Software |
| .PNM | XnSoft | Rasterbildefiler | Portable Any Map Image | GIMP | The GIMP Development Team |
| .PNS | SourceForge | Rasterbildefiler | PNG Stereo Image | 3D Vision Photo Viewer | NVIDIA |
| .PNT | Apple | Rasterbildefiler | MacPaint File | MacPaint | Apple |
| .PNTG | Apple | Rasterbildefiler | MacPaint Graphic File | Lemkesoft GraphicConverter | Lemkesoft |
| .POP | Valve | Rasterbildefiler | Team Fortress 2 Population File | Team Fortress 2 | Valve |
| .POV | The POV-Team | Rasterbildefiler | POV-Ray Raytracing Format | Pov-Ray | The POV-Team |
| .PP4 | Corel Corporation | Rasterbildefiler | Picture Publisher Bitmap File | Corel Presentations X8 | Corel |
| .PP5 | Corel | Rasterbildefiler | Picture Publisher 5 Image File | Micrografx Picture Publisher | Corel |
| .PPF | Corel | Rasterbildefiler | Picture Publisher Image File | CorelDRAW Graphics Suite | Corel |
| .PPM | The GIMP Development Team | Rasterbildefiler | Portable Pixmap Image File | Adobe Photoshop | Adobe Systems Incorporated |
| .PRN | Various Developers | Rasterbildefiler | HP PCL Printer Output | Canvas X | ACD Systems |
| .PRW | Abvent Group | Rasterbildefiler | Artlantis Shader Preview File | Abvent Artlantis | Abvent Group |
| .PSB | Adobe Systems Incorporated | Rasterbildefiler | Adobe PhotoShop Big File | Adobe Photoshop | Adobe Systems Incorporated |
| .PSD | Adobe Systems Incorporated | Rasterbildefiler | Adobe Photoshop Document | Adobe Illustrator CC | Adobe Systems Incorporated |
| .PSE | Adobe Systems Incorporated | Rasterbildefiler | Photoshop Elements Photo Project | Adobe Photoshop Elements | Adobe Systems Incorporated |
| .PSF | Adobe Systems Incorporated | Rasterbildefiler | Photoshop Proof Settings File | Adobe Photoshop Elements | Adobe Systems Incorporated |
| .PSP | Corel Corporation | Rasterbildefiler | PaintShop Pro Image | Corel Painter | Corel |
| .PSPBRUSH | Corel | Rasterbildefiler | PaintShop Pro Brush File | Corel Painter | Corel |
| .PSPIMAGE | Corel Corporation | Rasterbildefiler | PaintShop Pro Image | Corel Painter | Corel |
| .PSSD | Sonic Solutions | Rasterbildefiler | PhotoSuite Slide Show File | Roxio Creator NXT Pro 6 | Roxio |
| .PTG | Pearson | Rasterbildefiler | PowerTeacher Gradebook Configuration File | PowerTeacher Gradebook | Pearson |
| .PTK | Intuit, Inc. | Rasterbildefiler | Quicken Online Financial Data File | Intuit Quicken | Quicken |
| .PTS | Avid Technology | Rasterbildefiler | Pro Tools Session | Avid Pro Tools | Avid Technology |
| .PTX | Adobe Systems Incorporated | Rasterbildefiler | PageMaker Template File | Adobe InDesign | Adobe Systems Incorporated |
| .PVR | Imagination Technologies | Rasterbildefiler | POWERVR Texture File | PowerVR SDK | Imagination Technologies |
| .PWP | Seattle FilmWorks | Rasterbildefiler | PhotoWorks Image File | XnView MP | XnSoft |
| .PX | Pixela Corporation | Rasterbildefiler | Pixel Image File | Pixel image editor | Softonic Corporate |
| .PXA | Bartels Media GmbH | Rasterbildefiler | Autotext PhraseExpress Phrase File | PhraseExpress for iOS | Bartels Media GmbH |
| .PXD | Greg Ewing | Rasterbildefiler | Pyrex Definition File | Pyrex | Greg Ewing |
| .PXM | The Pixelmator Team | Rasterbildefiler | Pixelmator Image File | Pixelmator | The Pixelmator Team |
| .PXR | Pixar | Rasterbildefiler | Pixar Image File | Wolfram Research Mathematica | Wolfram Research |
| .PZP | Application Techniques Inc. | Rasterbildefiler | Pizazz Plus Palette Settings File | Pizazz | Application Techniques Inc. |
| .PZS | Sonic Solutions | Rasterbildefiler | PhotoSuite Slide Show File | Roxio Creator NXT Pro 6 | Roxio |
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