File extensions start with character 'P'
| File Type | Category | File Format | |
|---|---|---|---|
| .p10 | Partially Downloaded Files | Certificate Request File | |
| .p3 | Data Files | Primavera P3 Project File | |
| .p7m | Multiple Use Files | Digitally Encrypted Message | |
| .p7s | Text Files | Digitally Signed Email Message | |
| .pab | Data Files | Personal Address Book | |
| .pac | Microsoft Files | Proxy Auto-Config File | |
| .pack | Microsoft Files | Pack200 Packed Jar File | |
| .package | Package Files | Electronic Arts Game Package File | |
| .paf | Data Files | Personal Ancestral File | |
| .pages | Text Files | Pages Document | |
| .pak | Android Files | PAK (Packed) File | |
| .pak | Game Files | Video Game Package | |
| .pal | Configuration Files | Painter Custom Palettes File | |
| .paq | Backup Files | Hewlett-Packard Software Restore File | |
| .paq6 | Compressed Files | PAQ6 Data Archive | |
| .paq7 | Compressed Files | PAQ7 Data Archive | |
| .paq8 | Compressed Files | PAQ8 Data Archive | |
| .paq8f | Compressed Files | PAQ8F Compressed Archive | |
| .par2 | Compressed Files | Parchive 2 Index File | |
| .part | Multiple Use Files | Partially Downloaded File | |
| .partial | Multiple Use Files | Internet Explorer Partially Downloaded File | |
| .pas | Development Files | Pascal Source File | |
| .pat | Raster Graphics Files | Pattern File | |
| .pax | Compressed Files | PAX Archive | |
| .pb | Development Files | PureBasic Source File | |
| .pbd | Backup Files | EaseUS Todo Backup File | |
| .pbd | Vector Graphics Files | Adobe PhotoDeluxe File | |
| .pbf | Backup Files | Paragon Backup File | |
| .pbi | Compressed Files | PC BSD Installer Package | |
| .pbk | Data Files | Dial-Up Phone Book File | |
| .pbp | Firmware Update Files | PSP Firmware Update File | |
| .pbxproj | Development Files | Xcode Project Data File | |
| .pc | Development Files | Pro*C Source Code File | |
| .pcap | Data Files | Packet Capture Data | |
| .pcb | Data Files | Printed Circuit Board Design File | |
| .pcf | Game Files | Valve Particle System File | |
| .pck | Program Files | System Center Configuration Manager Package File | |
| .pcr | Data Files | PCMark Vantage Benchmark File | |
| .pct | Page Layout Files | Picture File | |
| .pd4 | Data Files | Windows Live Photo Gallery Information File | |
| .pd5 | Data Files | Windows Live Photo Gallery Information File | |
| .pdas | Data Files | PDAStore Data Store File | |
| .pdb | Database Files | Program Database | |
| .pdb | Database Files | Palm Desktop Database File | |
| .pdb | Data Files | Protein Data Bank File | |
| .pdb | Backup Files | PowerDesigner Database Backup File | |
| .pdd | Raster Graphics Files | Adobe PhotoDeluxe Image | |
| Page Layout Files | Portable Document Format File | ||
| .pdfig | Data Files | PDF Index Generator Project File | |
| .pdh | Page Layout Files | ProntoDoc for Word Browser Display Document Template | |
| .pdo | Microsoft Files | Pepakura Designer File | |
| .pds | Video Files | PowerDirector Script File | |
| .pdx | Data Files | Adobe Acrobat Index File | |
| .pe4 | Raster Graphics Files | Photo Explorer Thumbnail Archive | |
| .pea | Compressed Files | PEA File Archive | |
| .peb | Data Files | ProEST+ Buildings File | |
| .pec | Data Files | Brother Embroidery File | |
| .pem | Wordperfect Files | Privacy Enhanced Mail Certificate | |
| .pep | Data Files | TurboProject Project File | |
| .pet | Compressed Files | Puppy Linux Install Package | |
| .pex | Data Files | Merak Peep Data File | |
| .pf | Windows Files | Private File | |
| .pf | Data Files | Windows Prefetcher File | |
| .pfc | Data Files | AOL Personal File Cabinet | |
| .pfd | Vector Graphics Files | Micrografx Optima! File | |
| .pff | Page Layout Files | Formatta Portable Form File | |
| .pfl | Page Layout Files | PDFill Project File | |
| .pfx | System Files | PKCS #12 Certificate File | |
| .pgpf | Data Files | Password Generator Password File | |
| .phar | Executable Files | PHP Archive | |
| .phb | Data Files | Motorola Phone Book File | |
| .phd | Data Files | PhotoDirector Project File | |
| .phm | Data Files | Pro Home Manager Data File | |
| .php | PHP Files | PHP Source Code File | |
| .pi | Data Files | Pi Calculation Data File | |
| .pi2 | Raster Graphics Files | Portrait Innovations Photo | |
| .pickle | Development Files | Python Pickle File | |
| .pif | Executable Files | Program Information File | |
| .pim | Plug-in Files | Pro Tools Controller Plug-in Mappings File | |
| .pip | Configuration Files | Office Personalized Settings File | |
| .pipe | CAD Files | PIPE-FLO Project File | |
| .pis | Data Files | PS2DIS Project File | |
| .pit | Archive Files | PackIt Compressed Archive | |
| .piz | Compressed Files | Zipped File | |
| .pjt | Text Files | FoxPro Project Memo | |
| .pjx | Development Files | FoxPro Project | |
| .pk | Apple Files | Audition Peak File | |
| .pk3 | Game Files | Quake 3 Engine Game Data File | |
| .pka | Data Files | Packet Tracer Activity File | |
| .pkb | Data Files | Oracle Package Body File | |
| .pkf | Audio Files | Audition Peak File | |
| .pkg | Apple Files | Mac OS X Installer Package | |
| .pkh | Data Files | Oracle Package File | |
| .pks | Data Files | Oracle Package Spec File | |
| .pkt | Data Files | Packet Tracer Network Simulation Model | |
| .pla | CAD Files | ArchiCAD Project Archive | |
| .plist | Configuration Files | Mac OS X Property List File | |
| .pln | CAD Files | ArchiCAD Project File | |
| .plr | Game Files | rFactor Player File | |
| .pls | Playlist Files | Audio Playlist | |
| .plt | Vector Graphics Files | AutoCAD Plotter Document | |
| .plw | Data Files | PicoLog Data File | |
| .pmd | Page Layout Files | PageMaker Document | |
| .pml | Data Files | Process Monitor Log File | |
| .pmm | Data Files | Pegasus Mail Mailbox File | |
| .pmo | Data Files | Broderbund Print Meta Object File | |
| .pmr | Data Files | Avid Persisent Media Record File | |
| .png | Raster Graphics Files | Portable Network Graphic | |
| .pns | Raster Graphics Files | PNG Stereo Image | |
| .pnt | Raster Graphics Files | MacPaint File | |
| .pod | Development Files | Perl POD File | |
| .poi | Data Files | Magellan Maestro Point of Interest File | |
| .pol | Windows System Files | Windows Policy File | |
| .por | Data Files | SPSS Portable File | |
| .pos | Data Files | Trimble Position File | |
| .postal | Data Files | TomTom Postal Code File | |
| .pot | Data Files | PowerPoint Template | |
| .potm | Data Files | PowerPoint Open XML Macro-Enabled Presentation Template | |
| .potx | Data Files | PowerPoint Open XML Presentation Template | |
| .pp | Data Files | Pocket Physics Sketch File | |
| .pp2 | 3D Graphics Files | Poser Prop File | |
| .ppc | Development Files | Mobile Data Studio Project File | |
| .ppcx | Adobe Files | Adobe Presenter Presentation Audio File | |
| .ppf | PaintShop Pro Files | Edgecam Pathtrace Part File | |
| .ppk | Partially Downloaded Files | PuTTY Private Key File | |
| .ppr | Data Files | Project Planner Reader File | |
| .pps | Microsoft Office Files | PowerPoint Slide Show | |
| .ppsm | Data Files | PowerPoint Open XML Macro-Enabled Slide Show | |
| .ppsx | Microsoft Office Files | PowerPoint Open XML Slide Show | |
| .ppt | Microsoft Office Files | PowerPoint Presentation | |
| .pptm | Data Files | PowerPoint Open XML Macro-Enabled Presentation | |
| .pptx | Microsoft Office Files | PowerPoint Open XML Presentation | |
| .ppz | 3D Graphics Files | Compressed Poser Prop File | |
| .pqi | Disk Image Files | PowerQuest Drive Image | |
| .prb | Data Files | xyAlgebra Probabilities File | |
| .prc | eBook Files | Mobipocket eBook File | |
| .pre | Data Files | Lotus Freelance Graphics File | |
| .prf | Configuration Files | Outlook Profile File | |
| .prfpset | Configuration Files | Premiere Pro Effect Preset File | |
| .prj | Data Files | Project File | |
| .prm | Configuration Files | Parameter File | |
| .prn | Page Layout Files | Printable File | |
| .pro4 | Data Files | ProPresenter 4 Document | |
| .pro4pl | Data Files | ProPresenter Playlist File | |
| .pro4plx | Data Files | ProPresenter Playlist Bundle | |
| .pro4x | Data Files | ProPresenter 4 Bundle File | |
| .propdesc | Configuration Files | Property Description | |
| .properties | Configuration Files | Java Properties File | |
| .prp | Data Files | Rational Model Properties File | |
| .prproj | Digital Video Files | Premiere Pro Project | |
| .prs | Data Files | Harvard Graphics Presentation | |
| .prt | CAD Files | Pro/ENGINEER Part File | |
| .prx | Configuration Files | Windows Media Profile File | |
| .prz | Data Files | Freelance Graphics Presentation File | |
| .ps | Vector Graphics Files | PostScript File | |
| .psa | Data Files | Photoshop Album Catalog File | |
| .psd | Raster Graphics Files | Adobe Photoshop Document | |
| .pset | Adobe Files | Adobe InDesign Plug-in Set File | |
| .psf | Configuration Files | Photoshop Proof Settings File | |
| .psh | Video Files | Photodex Slide Show | |
| .psm | Audio Files | Protracker Studio Module | |
| .pst | Microsoft Outlook Files | Outlook Personal Information Store File | |
| .psv | Game Files | PlayStation 2 Save File | |
| .psw | Text Files | Pocket Word Document | |
| .ptb | Data Files | Power Tab File | |
| .ptf | Audio Files | Pro Tools 7 Session File | |
| .ptk | Data Files | Quicken Online Financial Data File | |
| .ptn | Data Files | PaperPort Thumbnail File | |
| .ptx | PaintShop Pro Files | Pro Tools 10 Session File | |
| .ptz | Data Files | E-Transcript Bundle File | |
| .pub | Page Layout Files | Publisher Document | |
| .pup | eBook Files | PlayStation 3 Update File | |
| .puz | Game Files | Across Lite Crossword Puzzle | |
| .pvc | Audio Files | Panasonic VM1 Voice File | |
| .pvj | Text Files | ProofVision Job Ticket | |
| .pvl | Data Files | Instalit Library | |
| .pvm | Text Files | Photo Video Manifest File | |
| .pvr | Raster Graphics Files | POWERVR Texture File | |
| .pwdp | Text Files | Password Pad Document | |
| .pwdpl | Text Files | Password Pad Lite Document | |
| .pwi | Text Files | Pocket Word Document | |
| .pws | Configuration Files | Painter Workspace File | |
| .pxa | Data Files | XpressAccounts Data File | |
| .pxc | Data Files | Photodex Cache File | |
| .pxf | Data Files | Transit XV Pack Project File | |
| .pxj | Data Files | RecordNow Project | |
| .pxm | Raster Graphics Files | Pixelmator Image File | |
| .py | Development Files | Python Script | |
| .pyc | Program Execution Files | Python Compiled File |