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| Extension | File Type Developer | File Category | File Type Description | Primary Software | Primary Software Developer |
|---|---|---|---|---|---|
| .PAN | ProVUE Development | Graphic Files | Panorama Database File | ProVUE Development Panorama | ProVUE Development |
| .PANO | Microsoft Corporation | Graphic Files | Camera Panoramic Picture | Microsoft OneDrive | Microsoft Corporation |
| .PC3 | Autodesk, Inc. | Graphic Files | AutoCAD Plotter Configuration File | Autodesk AutoCAD | Autodesk, Inc. |
| .PCJ | IBM | Graphic Files | IBM LinkWay Graphics Data | IBM LinkWay | IBM |
| .PCS | Pfaff | Graphic Files | Pfaff Embroidery File | PesView | Open Source |
| .PDA | Molecular Devices | Graphic Files | SoftMax Pro Microplate Data Analysis File | SoftMax Pro | Molecular Devices |
| .PDV | Kitware, Inc. | Graphic Files | Visualization Toolkit Graphic File | Visualization ToolKit | Interscape |
| .PFL | PlotSoft | Graphic Files | PDFill Project File | PlotSoft PDFill | PlotSoft |
| .PFR | Corel Corporation | Graphic Files | Corel PaintShop Photo Pro Frame Data | PaintShop Pro | Corel |
| .PFS | Antonio Da Cruz | Graphic Files | PhotoFiltre Studio Saved Selection File | PhotoFiltre | Antonio Da Cruz |
| .PGL | Hewlett-Packard | Graphic Files | HP Plotter Language File Format | Unknown Software | Unknown Developer |
| .PHC | David Harris | Graphic Files | Pegasus Mail Header Cache | Pegasus Mail | David Harris |
| .PHP | Panic | Graphic Files | PHP Source Code File | Microsoft Notepad | Microsoft Corporation |
| .PI | 10101 Software | Graphic Files | Pi Calculation Data File | iPi Software | 10101 Software |
| .PICS | Apple | Graphic Files | Apple Mac PICT Drawing Sequence File | QuickDraw | Apple |
| .PII | Apple | Graphic Files | Golden Orchard Apple II CD Rom File | Apple OS X | Apple |
| .PIV | Peter Bone | Graphic Files | Pivot Stickfigure Animation | Pivot Animator (Pivot Stickfigure Animator) | Peter Bone |
| .PL1 | Broderbund | Graphic Files | 3D Home Architect Room Plan | 3D Home Architect | Broderbund |
| .PLB | Microsoft Corporation | Graphic Files | Microsoft Robotics Developer Studio Playback Data | Microsoft Robotics Developer Studio | Microsoft Corporation |
| .PLZ | IBM | Graphic Files | Lotus Freelance Presentation | Lotus Freelance Graphics | IBM |
| .PMB | Polar | Graphic Files | Polar Uplink Tool Bitmap File | PeaZip | Open Source |
| .PMP | Autodesk, Inc. | Graphic Files | AutoCAD Plot Model Parameter File | Autodesk AutoCAD | Autodesk, Inc. |
| .PNG | The Pixelmator Team | Graphic Files | Portable Network Graphics | Adobe Illustrator CC | Adobe Systems Incorporated |
| .POS | Trimble Inc. | Graphic Files | Trimble Position File | GPS Pathfinder Office Software | Trimble Inc. |
| .PPI | Microsoft Corporation | Graphic Files | Microsoft PowerPoint Graphics Data | Microsoft PowerPoint | Microsoft Corporation |
| .PPR | IBM | Graphic Files | Cognos PowerPlay Report File | Cognos PowerPlay | IBM |
| .PSEG | IBM | Graphic Files | IBM Printer Page Segment Bitmap | XnView MP | XnSoft |
| .PSI | SAPIEN Technologies | Graphic Files | PrimalScript Online Help Shortcut | PrimalScript | SAPIEN Technologies |
| .PTN | Nuance | Graphic Files | PaperPort Thumbnail File | Nuance PaperPort 14 | Nuance |
| .PTS | Avid Technology | Graphic Files | Pro Tools Session | Avid Pro Tools | Avid Technology |
| .PTV | CodeJam Pte Ltd | Graphic Files | MemoriesOnTV Project | MemoriesOnTV | CodeJam Pte Ltd |
| .PVT | Tom Jennings | Graphic Files | Local Fidonet Pointlist | Fidonet | Tom Jennings |
| .PVW | Outram Research Ltd | Graphic Files | Pronto For Windows Data View File | Pronto for Windows | Outram Research Ltd |
| .PWC | LANovation | Graphic Files | PictureTaker File | LANovation PictureTaker | LANovation |
| .PXB | The Pixelmator Team | Graphic Files | Pixelmator Brush File | Pixelmator | The Pixelmator Team |
| .PZI | Unknown Developer | Graphic Files | Pizazz Plus Graphics File | Unknown Software | Unknown Developer |
| .PZM | GraphPad Software | Graphic Files | GraphPad Prism Project | GraphPad Prism | GraphPad Software |
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