Стандартные занчения расширений файлов

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Num Sym

  .??_  Files ending in "_" are often compressed install files of the same
          name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
  .P    PASCAL Program File
        ReaGeniX Code Generator Application Parameter File
        Applause Picture
        Progress 4GL Program
        Cliq Accessories Datebook Permissions [Linux Suite PDF Description]
  .P01  IsoBuster File
  .P01, .P02, ... particularly in binary newsgroups (See .PAR below)
  .P10  Tektronix Plot 10 Drawing
        Certificate Request
  .P12  Personal Information Exchange File
  .P16  ProTracker Studio Music
  .P22  Patch22 Patch File
  .P3   Primavera Project Planner
  .P34  P34 Lotto File
  .P3D  Operation Flashpoint Game Model (within .PBO archive - edit with Oxygen)
  .P64  Picasso 64  [XnView]
        H.261 Encoded Video File [Player]
  .P65  Pagemaker 6.5 File
  .P7   Xv Visual Schnauzer Thumbnail Format
  .P7B  PKCS #7 Certificate
  .P7C  Digital ID File
  .P7M  PKCS #7 MIME Message (see Section 3.2 in RFC 2311)  [MIME]
  .P7R  PKCS #7 Certificate
  .P7S  PKCS #7 Signature
  .PA   Print Artist
  .PA1  PageAhead Worktable
  .PA2  STABCAL (stability calculation for aqueous systems) File
  .PA3  STABCAL (stability calculation for aqueous systems) File
  .PA5  STABCAL (stability calculation for aqueous systems) File
  .PAB  Microsoft Personal Address Book
  .PAC  SB Studio II Package
        Stad Image  [XnView]
        Desperados: Wanted D|A Archive  [Dragon UnPACKer]
        Screen Subtitling Systems Win2020 Screen Subtitle
  .PAD  Telemate Keypad Definition
        Scanner Output   [IrfanView]
		  (To edit try renaming to .JPG -- these are often JPEG files.)
        Visual Expert Source Code Documentation
        Top Secret Crypto Gold File
        MicroSim PCBoard PADS-compatible Netlist File
  .PAE  PowerArchiver 20002 Encrypted Archive
  .PAF  PARIS Audio Format
        Personal Ancestral File
  .PAG  Property Page File
  .PAINT  MacPaint Bitmap Graphic  [XnView]
  .PAK  Compressed Archive File
        Dune 2 Archive  [Dragon UnPACKer]
        Final Fantasy 8  [Dragon UnPACKer]
        Half Life Archive  [Dragon UnPACKer]
        Hand of Fate Archive  [Dragon UnPACKer]
        Heretic 2 Archive  [Dragon UnPACKer]
        Hexen 2 Archive  [Dragon UnPACKer]
        Lands of Lore Archive  [Dragon UnPACKer]
        Quake 2 Archive  [Dragon UnPACKer]
        Quake Archive  [Dragon UnPACKer]
        Trickstyle Archive  [Dragon UnPACKer]
  .PAL  Color Palette
        Adobe Pagemaker Library Palette
        Tree Professional Palm Creator File
        Command & Conquer File [Format]
        Compressed File
        Pallas Athena Protos Process Model
  .PALM  Palm Pixmap
  .PAN  Chromeleon Control Panel
        CorelDraw Printer-specific File
        The Panorama Factory Project (versions lower than 2.0, higher use .PFP)
        Infinite Pictures, Inc. iMove Viewer
        SmoothMove Pan Viewer  [XnView]
  .PAP  Tree Professional Palm Creator Image File
        Corel Painter Pattern, Selection or Texture File
  .PAQ  HP System Recovery File (Files are A.PAQ, B.PAQ, etc. Use an unzip 
          program to open with the password "pandora" [or "Pandora" in a second report].)
  .PAR  Fractint Parameter File
        Parity Volume Sets (.P01,...) (multiple programs - original: Mirror)
        Mirror Archive Restoration File
        SmartPar (takes over after Mirror)
        SolidEdge 3D CAD Model
        Digitalk Parts Application
        Model Parameter File
        Windows 3.x Permanent Output File
        SAP Enterprise Portal Component
        Scalado ImageZoom Parameter File (Creates zoomable images on the Internet)
  .PART  eDonkey 2000 Partial Download
  .PAS  Pascal Source Code
        Borland C++ Builder 6 Source
        Borland Delphi Source
  .PASS  Minimouse Quiz Editor Password Protected File
  .PAT  AutoCAD Hatch Pattern
        Patch File (used to update various programs)
        Corel Vector Pattern  [XnView]
        PaintShop Pro Pattern  [XnView]
        Advanced Gravis Ultrasound
        Forte Tech. Patch
        DART Pro 98 Pattern
        GIMP Pattern  [GIMP]  [XnView]
        Arcinfo Coverage File (GIS-related file)
        ArcView Geocoding Pattern Recognition File
  .PAU  OzWin CompuServe E-mail/Forum Access Paused Message
  .PAV  Panda Antivirus File (unverified)
  .PAV????  Panda Antivirus File (???=numbers; unverified)
  .PAX  Project A.R.S.E Brain File
  .PAY  Priority Data Sytems PriorityRate 
          (Comparative rating programs solutions to insurance agents)
  .PAZ  Project A.R.S.E Brain File
  .PB   WinFax Pro Phone Book
        PixBase Setup
        FAXability Fax
  .PB1  First Publisher Document
  .PB2  STABCAL (stability calculation for aqueous systems) File
  .PBA  Powerbasic Source Code
  .PBD  PowerBuilder Dynamic Library
        FaxNOW/Faxit Phone Book
        Faxit Phone Book
        Adobe Graphic Format
  .PBF  Turtle Beach Pinnacle Bank File (multilayer sound file)
        Grand Prix Legends BMAP (Bitmap) File
        PBook E-book Format (renamed ZIP file)
        Portable Bitmap Format File
        Paragon Disk Image
  .PBI  Profiler Binary Input
        Powerbasic Include File
  .PBK  Microsoft Phonebook
          (various small computers use this format for their phonebooks)
        ElectraSoft Fax Phone Book
        HP-95LX Phone Book File
  .PBL  PowerBuilder Library
        Powerbasic Library
  .PBM  UNIX Portable Bit Map Graphic  [XnView]  [IrfanView]
        XLib Planar Bitmap
  .PBN  Portable Bridge Notation (stores deals for the card game bridge)
  .PBO  Operation Flashpoint Archive  [Dragon UnPACKer]
  .PBQ  PunkBuster Query Script
        Audio File (usually you have to rename to .MP3 to play)
  .PBR  PowerBuilder Resource
        BI/Suite Hypercube Presentation
  .PBO  Profiler Binary Output
        OpFlashpoint Game Mission Folder (wrapped up into one file) [Resource Site]
  .PBR  PowerBuilder Resource File [Resource Site]
        BorderManager 3.5 Support Pack 3 File
        Microsoft Publisher Autosave/Autorecovery/Backup File
  .PBS  PowerArchiver Backup Script
        Paint Shop Pro Brush Stroke Preset
  .PBT  Profiler Binary Table
        Micro Dynamics MARS  [XnView]
  .PBV  Paint Shop Pro Bevel Preset
  .PBX  Microsoft Outlook Express Message Folder
  .PC   PC-specific Text File
        Sierra Print Artist Postcard
        Oracle Pro*C Source Code
  .PC1  Degas & Degas Elite  [XnView]
  .PC2  Degas & Degas Elite  [XnView]
        STABCAL (stability calculation for aqueous systems) File
        AutoCAD R14 Plotter Configuration File
        PrivateChat! (Encrypted Internet / Lan Instant Messaging / File Transfer)
  .PC3  Harvard Custom Palette (Harvard Graphics taken over by Serif)
        Degas & Degas Elite  [XnView]
        STABCAL (stability calculation for aqueous systems) File
        AutoCAD R2000 Plotter Configuration File
  .PC5  Rockwell Software Logix 5 File
        STABCAL (stability calculation for aqueous systems) File
  .PC8  ASCII Text IBM-8
  .PCA  PCAnywhere Registry Backup
        Sonic Foundry Perfect Clarity Audio File
        MicroSim PCBoard Layout Database File (ASCII)
  .PCB  Protel Technology Advanced PCB Design
        Microsoft PowerPoint Application Data File [Buy Office XP at Shop.Microsoft]
        Ivex Winboard Design File
        Broderbund Print Shop Business Card
  .PCC  PC Paintbrush Image File
  .PCD  Photo-CD Image  [XnView]  [IrfanView]
        P-Code Compiled Test Scripts
  .PCDS  Photo-CD Image
  .PCE  Eudora Mailbox Name Map
        Print Shop Envelope
        Borland Package Collection Editor File
  .PCF  Profiler Command File
        HP-95LX Printer Configuration File
        Calyx Point (mortgage software)
        Paint Shop Pro Colored Foil Preset
  .PCH  Patch File
        Microsoft C PreCompiled Header
  .PCI1  DCX-PCI100 Motion Control Command Language File
  .PCI3  DCX-PCI300 Motion Control Command Language File
  .PCJ  IBM Linkaway-Live Multimedia Tool Graphics
  .PCK  Turbo Pascal Pick File (may be found with many programs that use a pick file)
        ARIA PIPP Spectrum
        Commandos II File [Extractor]
  .PCL  HP Printer Control Language [SwiftView] [XnView]
  .PCM  Sound File
        OKI MSM6376 Synth Chip PCM Format
        Embroidery Design File [possibly read with Melco Sizer Software]
        Bliss for Windows 
          (A series of computer programs for working with the graphical language Bliss)
  .PCN  Paint Shop Pro Contour Preset
  .PCP  Symantec Live Update Pro
        AutoCAD R13 and Prior Plotter Configuration File
  .PCS  PICS Animation
        Pfaff Home Embroidery Format (Catalog using Designer's Gallery Studio) 
          (Pfaff Creative VIP Software)
        Ultra Zip Password Cracker (UZPC) File (No longer available.)
  .PCT  Bitmap Graphic (Apple PICT Format Usually)
        Macintosh Quickdraw/PICT Drawing  [XnView]
        Honeywell GUS Display Builder 
          (factory process overview--an ActiveX container that runs from a viewer)
        NIST IHDR  [XnView]
  .PCW  PC Write Text File
  .PCX  PC Paintbrush Bitmap Graphic   [IrfanView]  [SwiftView]
  .PD   Male MRI  [XnView]
  .PD?  DFSEE Partition Table Backup (PTABLE.PT? where ?=1, 2, 3, etc.)
  .PD3  ICDD X-ray Powder Diffraction Patterns and Digitized Diffractogram
        Denso BHT-7000 Terminal Executable Program File
        3D Studio Max File [OOF Converter Plug-in]
  .PDA  Bitmap Graphic
  .PDB  Palmpilot Database/Document File  [XnView]
        Pegasus DataBase
        Tact File
        Adobe PhotoDeluxe Image  [XnView]
        Microsoft Visual Dev C++ Debugging Info
        QuickPOS Database File
        Brookhaven Protein Databank File (MIME type chemical/x-pdb)
        MonkeyCard/MonkeyLogo  [XnView]
        TealPaint  [XnView]
        Powerproject Teamplan (was Power Project)
        Insight II Brookhaven Protein Databand File
        Ribbons Data (Molecular graphics software)
  .PDBX  Insight II X-PLOR Coordinate File
  .PDC  PowerDivX NextGen Media Player Chapter File
        PReS Print Control
  .PDD  Adobe PhotoDeluxe Image  [XnView]
  .PDF  Adobe Acrobat File
        Netware Printer Definition File
        Analyser Protocol Definition File
        Ed-Scan 24-bit Graphic File
        Microsoft Package Definition File (Inventory-related)
        ArcView Preferences Definition File
  .PDG  PrintShop Deluxe File
  .PDI  Microsoft Powerpoint File [Buy Office XP at Shop.Microsoft]
        PReS Document Creation Subroutines
  .PDL  Borland C++ Project Description Language
        SymbianOS Printer Driver
        WITE32 File (Windows Integrated Test Environment)
  .PDM  Sybase Power Designer File
        PowerDivX NextGen Media Player
  .PDN  Plan de Negocio
  .PDP  Broderbund Print Shop Deluxe File
        Adobe Photoshop PDF Format (used to read PostScript documents as .PDF)
  .PDQ  Patton & Patton Flowcharting PDQ Lite File
  .PDR  Port Driver (used by many devices)
        SymbianOS Printer Resource File
  .PDS  Print Shop Graphic
        Incredimail
        Source Code File
        Telsis HiCall Program File
        Planetary Data System  [XnView]
  .PDT  ProCite Primary Database
        VersaPro Compiled Block
  .PDV  Paintbrush Printer Driver
  .PDW  Professional Draw Document
  .PDX  Paradox Files
        ProCite Database Keys
        Acrobat Catalog Index
        Mayura Draw  [XnView]
  .PDZ  GZipped Brookhaven Protein Databank File (see .PDB)
  .PE   PatentEase File
  .PE4  Photo Explorer Thumbnail  [XnView]
  .PEB  WordPerfect Program Editor Bottom Overflow File
  .PEBPRJ  PEBundle File (bundle executable and associated .DLL files)
  .PED  WordPerfect Program Editor Delete Save
  .PEM  WordPerfect Program Editor Macro
  .PEN  Paint Shop Pro Enamel Preset
  .PEO  Homeworld MESH File [Extractor]
  .PEP  TurboProject Project File
  .PEQ  WordPerfect Program Editor Print Queue File
  .PER  WordPerfect Program Editor Resident Area
  .PES  WordPerfect Program Editor Work Space File
        Brother/Babylock/Bernina Home Embroidery Format 
          (Catalog using Designer's Gallery Studio)
  .PET  WordPerfect Program Editor Top Overflow File
        Custom CD Menu
        Magic Petz File
  .PEW  IAR Embedded Workbench (C/Embedded C++ cross compiler and debugger)
  .PF   Monitor or Printer Profile File
        Aladdin Systems Private Files Encrypted File
        Progress Parameter File
        Prefetch (also called Scenario) File (located in %windir%\prefetchfolder)
          (Prefetch files contain info necessary to start applications faster)
  .PF?  SmartWare Project Source File (requires login)
  .PFA  Postscript Type 1 Font (ASCII)
  .PFB  Postscript Type 1 Font (binary)
  .PFC  PF Component
        New Soft Presto! Page Manager File (product often ships with scanners)
        AOL Preferences 
          (Subfolder of Personal Filing Cabinet (PFC) saved as a 
          separate file. Viewable only using AOL "File-Open" menu)
        First Choice Text File
  .PFE  Programmers File Editor
  .PFF  Armored Fist 3 Archive  [Dragon UnPACKer]
        Delta Force Archive  [Dragon UnPACKer]
        Delta Force 2 Archive  [Dragon UnPACKer]
        Delta Force: Land Warrior Archive  [Dragon UnPACKer]
        Tachyon Archive  [Dragon UnPACKer]
  .PFG  jEEPers File (program your AVR)
  .PFK  XTree Programmable Function Keys
  .PFL  SmartStation AppsView File
        Paint Shop Pro Fine Leather Preset
  .PFM  Printer Font Metrics (PostScript)
  .PFP  The Panorama Factory Project (versions 2.0 and above, lower use .PAN)
  .PFR  PaintShop Pro Frame  [XnView]
        WebFont Wizard Portable Font Resource (no longer supported)
  .PFS  PFS:File Database / PFS:Write Text
        BIOCCELERATOR Homologous Sequence Names
  .PFT  Chiwriter Printer Font
  .PFX  Personal Information Exchange File
  .PG   IBM LinkWay Cut/Paste File
        Printfox/Pagefox  [XnView]
  .PGA  PowerGREP Action File
  .PGC  Compressed Portfolio Graphic  [XnView]
  .PGD  Pretty Good Privacy Virtual Disk File
  .PGF  Portfolio Graphics  [XnView]
  .PGI  PGraph Library Printer Device Driver
  .PGL  Graphics (Plotter)
  .PGM  Portable Graymap Graphic  [XnView]  [IrfanView]
        Chromeleon Batch Program
        Signature Program
  .PGN  Portable Game Notation (Used for chess)
  .PGP  Program Parameter
        Pretty Good Privacy
        AutoCAD Program Parameter File
  .PGR  PowerGREP Results File
  .PGS  Man4DOS Manual Page
        PGSuper (Prestressed Girder SUPERstructure design and analysis)
  .PGT  Sothink Glenda Widget Tools File
  .PGX  Binary Property Page File
  .PH   PERL Header
        Optimized Geoworks .GOH File
        Microsoft Help Compiler Phrase Table
  .PH3  PHP Script
  .PHB  NewLeaf PhraseBook
        ClustaW Tree File
        TreeView File (Tree drawing software for Apple Macintosh and Windows)
        PhoneB Phonebook File
        Arcsoft PhotoBase File
  .PHC  Home Embroidery Format (Catalog using Designer's Gallery Studio)
  .PHD  PC Help Desk File
  .PHL  Icon Collection File
        Database Configuration File (GLOBAL.PHL for Postgres or mysql)
        PHP Source File (ASCII text file)
  .PHM  Phorm (config or distro file) (Form processor)
  .PHN  UltraFax/QmodemPro Phone List
        Phormation (status or distro file - Config program for Phorm)
  .PHO  Metz Phone Phone List
        Gerber Photoplot File
  .PHP  PHP Script  [Also .PHP3 & .PHP4]
        Microsoft Picture It! Publishing Project File
        PhotoParade [XnView]
  .PHP3  PHP Script
  .PHP4  PHP Script
  .PHQ  Handheld Quake Language File
  .PHR  NoExcuse Phrase Checker
        LocoScript Phrases
  .PHS  PHScript File (document description script)
  .PHT  Partial Hypertext File (HTML fragments compiled into a whole)
  .PHTM  PHP Script (usually with HTML output)
  .PHTML  PHP Script (usually with HTML output)
  .PHW  Media Lab PhotoWebber Session File
  .PI   Blazing Paddles  [XnView]
  .PI1  Degas & Degas Elite  [XnView]
  .PI2  Degas & Degas Elite  [XnView]
  .PI3  Degas & Degas Elite  [XnView]
  .PI4  Degas & Degas Elite  [XnView]
  .PI5  Degas & Degas Elite  [XnView]
  .PI6  Degas & Degas Elite  [XnView]
  .PIC  PC Paint Bitmap Graphic  [XnView]
        Advanced Art Studio  [XnView]
        Lotus Picture
        Macintosh Quickdraw/PICT Drawing  [XnView]
        SDSC Image Tool Pixar Picture
        Bio-Rad Confocal  [XnView]
        Pixar Picture  [XnView]
        Psion Series 3 Bitmap  [XnView]
        Radiance Scene Description Image  [XnView]
        Rayshade Graphic  [XnView]
        Softimage  [XnView]
        Stad File  [XnView]
        Delcam Picture File
  .PICIO  Pixar Picture  [XnView]
  .PICON  Personal Icon
  .PICS  PICT Drawing Sequence
  .PICT  Macintosh Quickdraw/PICT Drawing  [XnView]
  .PICT2  Macintosh Quickdraw/PICT Drawing  [XnView]
  .PIF  Windows Program Information File
        IBM PIF Drawing
  .PIG  Lucas Arts Dark Forces WAD File
        Ricoh IS30  [XnView]
  .PIM  PixMaker Project File
  .PIN  Pushpin Set
        Compton's 3D World Atlas
        Links Games Player Information File
        Epic Pinball Data File
        Graphisoft ArchiCAD
  .PIP  Microsoft Office Personalized Menu and Toolbar
  .PIT  Macintosh Compressed Archive File
  .PIX  PrintMaster Graphic File
        Alias PIX Bitmap [XnView]
        ESM Software Pix  [XnView]
        PABX Background  [XnView]
        Inset Systems Bitmap
        SDSC Image Tool Alias Image
        Truevision Targa Bitmap  [XnView]
        Vort  [XnView]
  .PIXAR  Pixar Picture  [XnView]
  .PJ   MKS Source Integrity File
        SuperProject Project File
        Project64 Game Progress File (N64 Emulator)
  .PJL  ProCite Term Lists and Journal Title Lists
  .PJS  Purejapan Viewer (proprietary picture format)
  .PJT  Foxpro Project Memo
        AcuBench Project File
        Starbase Codewright Editor Project
  .PJX  Foxpro Project
  .PK   CoolEdit96 Graphical Waveform [?]
        TeX DVI Driver Packed Bitmap Font
  .PK3  American McGee Alice Archive  [Dragon UnPACKer]
        Return to Castle Wolfenstein File
        Heavy Metal: F.A.K.K.2 Archive  [Dragon UnPACKer]
        Quake III Engine PAK File (renamed zip file)  
          [Dragon UnPACKer or any Unzip Program]
          ...and other games
  .PKA  Compressed Archive File
  .PKB  QuickPOS (Point-Of-Sale) Keyboard Layout File
  .PKB  Oracle Package Body (sometimes included with other programs)
  .PKD  Top Secret Crypto Gold File
  .PKF  ARTiSAN Real-time Studio (UML CASE Tool) [See .IDF]
        SecretAgent Key File (file encryption)
  .PKG  Microsoft Developer Studio Application Extension
        AppleLink Package Compression Format File
        Newton File/Application  (Apple's old PDA)
        Next Installer Script
        MicroSim PCBoard External ASCII Package Definition File 
          (used for import and export)
  .PKO  PublicKey Security Object
  .PKR  PGP Public Keyring
        Tony Hawk Pro Skater 2 Archive  [Dragon UnPACKer]
  .PKS  Insight II NMR Peak Intensity/Integral
  .PKS  Oracle Package Specification (sometimes included with other programs)
  .PKT  Fidonet Packet
        EtherPeek Collected Packets
        TTC FireBerd 500 Capture File
  .PL   Harvard Palette (Harvard Graphics taken over by Serif)
        PERL Program File
        Linux Shell Executable Binary
        PROLOG Program File (SWI-Prolog)
        TeX Property List Font Metric
  .PL1  3D Home Architect Room Plan
  .PL3  Harvard Chart Palette (Harvard Graphics taken over by Serif)
  .PL4  Pathloss Network Data File
  .PLA  STABCAL (stability calculation for aqueous systems) File
        APT Assistant File (Business/Project planning)
        Connectivity Memory Model Plasticity Function Additional Precision Input File
  .PLB  Foxpro Library
        LogoShow Screensaver
        STABCAL (stability calculation for aqueous systems) File
        MicroSim PCBoard Package Library File
        PCAD Library Management Module File
        MSC.Fatigue v9.0 Improved Performance Patch
        Insight II Pseudoatom Library
  .PLC  Lotus Add-in
  .PLD  PLD2 Source File (program due out 1Q2001)
        PINO 3
  .PLF  InterVideo WinDVD Playlist File
  .PLG  REND386/AVRIL File
        ButtonGadget (graphic button generator)
  .PLH  Paint Shop Pro Light Preset
  .PLI  Oracle 7 Data Description
  .PLIST  Property List XML File (used in Apple systems) [More Info]
  .PLJ  PlayJ Music Format
  .PLK  ATI Radeon Video Driver File
  .PLL  Clipper Prelinked Library
  .PLM  DisorderTracker2 Module
        Panasonic SD Voice Editor File
  .PLN  WordPerfect Spreadsheet File
        ArchiCAD Project File (3D CAD)
        RealFlight Radio Control Aircraft Simulator Airplane Description
        Home Plan Pro Architecture Design
  .PLO  STABCAL (stability calculation for aqueous systems) File
  .PLR  Descent Pilot File
        Player File (used by many games)
  .PLS  DisorderTracker2 Sample
        WinAmp MPEG PlayList File
        Shoutcast File
        MYOB Data File
        MattBatt iAM-player
  .PLT  AutoCAD HPGL Vector Graphic Plotter File
        HP Graphics Language (plotter) [SwiftView]
        Gerber Sign-making Software File
        Bentley's CAD MicroStation Driver Configuration for Plotting
        Clipper 5 Pre-linked Transfer File
        X-wing vs. Tie Fighter Pilot File
        Palette
        Lotus Organiser Paper Layout Definition (ver 1,2 maybe others)
        Infinity Game Engine Bitmap Graphic [More Info]
  .PLW  PicoLog Data File
  .PLX  Executable Perl Script
        Neurological Data for Statistical Analysis [File Format & More Info]
  .PLY  Autodesk Polygon
        Blaze Media Pro File (multimedia software)
        Harvard Spotlight Presentation Screen
        PopMail Data
        AIRO
  .PM   Presentation Manager Graphic  [XnView]
        Perl Module
        Pagemaker File
  .PM3  PageMaker 3 Document
  .PM4  PageMaker 4 Document
  .PM5  PageMaker 5 Document
  .PM6  PageMaker 6 Document
  .PMA  Windows Performance Monitor File
  .PMAP  Pocket Mindmap Format File 
           (XML Format - Use any XML reading tool to read/manipulate.)
  .PMC  Windows Performance Monitor File
        A4Tech Scanner Graphic
  .PMD  Pagemaker File
        Polyphonic Ringtone File for Phones
        PlanMaker Spreadsheet
  .PME  Plazmic Media Engine File
        Pixela Digital Picture (Japanese site)
  .PMF  ArcReader GIS Mapping File
  .PMG  Pagemaker Group File (EPS graphic)
        Paint Magic  [XnView]
  .PMI  Pegasus Mail Message Folder Index File
  .PML  NT4 Performance Monitor Log File
        Pegasus Mail Distribution List
        PADGen Program Information
        Windows Performance Monitor File
        PageMaker Library
  .PMM  Pegasus Mail Message Folder
        Amaris BTX/2 Program
  .PMO  Print Master Gold Text
  .PMP  Sony DSC-F1 Cyber-shot [Acdsee]  [XnView]
        AutoCAD R2000 Plotter Model Parameters File
        Soldat Map Maker/Soldat Polymap File
  .PMR  Windows Performance Monitor File
        PhotoModeler Project
  .PMT  Technics Keyboard Panel Memory File
        Pagemaker File
  .PMW  Windows Performance Monitor File
  .PMX  Pegasus Mail File
  .PN2  International Systems Consultancy ParsNegar II Word Processor 
          (Persian/Arabic and Urdu)
  .PN3  Harvard Printer Driver (Harvard Graphics taken over by Serif)
  .PND  DATAIR Pension System Pending File
  .PNF  Precompiled Setup Information (Temporary file seen during installs)
  .PNG  Portable (Public) Network Graphic (proposed GIF replacement)  [XnView]  
          [IrfanView]
        PaintShop Pro Browser
        Fireworks Image File
  .PNL  PEERNET Label Designer File
  .PNM  PBM Portable Any Map Graphic [XnView] (family of formats)
  .PNR  PEERNET Label Designer File
  .PNS  PEERNET Label Designer File
  .PNT  MacPaint Bitmap Graphic  [XnView]
        Paperport Thumbsview
        MarkMail Qwk Reader Pointers
        World Data Bank II Country Data File (derived from CIA data)
  .PNTG  MacPaint Bitmap Graphic  [XnView]
  .PNU  PEERNET Label Designer File
  .PNV  CRiSP Harvest File
  .PO2  STABCAL (stability calculation for aqueous systems) File
  .PO3  STABCAL (stability calculation for aqueous systems) File
  .PO5  STABCAL (stability calculation for aqueous systems) File
  .POC  PocoScript File
  .POD  Terminal Velocity Archive  [Dragon UnPACKer]
  .POG  Descent2 File
  .POH  Optimized Geoworks .GOH File
  .POL  Music File
        AscToHTM Policy File
        Windows Policy File
  .POLICY  Java Policy File
  .POO  8-bit Commodore 64 Machine Code [CCS64 Commodore 64 Emulator]
  .POP  dBase Popup Menu
        PopMail Message Index
  .POR  Corel Painter Portfolio File
  .POS  ProCite Output Styles
        QuickPOS IIF File (see IIF above)
        Paint Shop Pro Polished Stone Preset
  .POT  PowerPoint Template [Buy Office XP at Shop.Microsoft]
  .POTHTML  Microsoft Powerpoint HTML Template
  .POV  Persistence of Vision Ray-tracer
  .POW  PowerChords Chord Chart
  .PP   Compressed Amiga Archive File
  .PP2  Curious Labs Poser Prop File
  .PP3NSCALE  PlanetPress File (electronic forms manager)
  .PP4  Picture Publisher
  .PP5  Picture Publisher
  .PPA  PowerPoint Add-in [Buy Office XP at Shop.Microsoft]
  .PPB  WordPerfect Print Preview Button Bar
  .PPC  Roxio Easy CD Creator File
  .PPD  PostScript Printer Description
  .PPF  Turtle Beach Pinnacle Program File
        Jasc Paint Shop Pro 7 Preset File
        Micrografx Picture Publisher File (Micrografx now part of Corel)
        PlayStation Patch File
        MENSI PointScape 3D Laser Scanner Project File
  .PPG  Microsoft PowerPoint Presentation
        Professor Franklin's Photo Print Gold
  .PPI  Microsoft PowerPoint Graphics File [Buy Office XP at Shop.Microsoft]
  .PPJ  Adobe Premiere Video Editing File
  .PPK  PuTTY Win32 Telnet/SSH Client
  .PPL  Harvard Polaroid Palette Plus ColorKey Driver 
          (Harvard Graphics taken over by Serif)
  .PPM  PBM Portable Pixelmap Graphic  [XnView]  [IrfanView]
        Insight II Proton Chemical Shifts
  .PPMA  Portable Bitmap  [XnView]
  .PPO  Clipper Preprocessor Output
  .PPP  Serif PagePlus Publication
        Enfocus Preflight Profile
        Parson Power Publisher
        Punk Productions Picture  [XnView]
  .PPR  Cognos PowerPlay OLAP Multidimensional Cube
  .PPRINT  Pics Print File
  .PPS  PowerPoint Slideshow  [XnView] [Buy Office XP at Shop.Microsoft]
        ArcView Processing Set Codes
  .PPT  PowerPoint Presentation  [XnView] [Buy Office XP at Shop.Microsoft]
  .PPTHTML  Microsoft Powerpoint HTML Document
  .PPX  Serif PagePlus Publication
        Cognos PowerPlay OLAP Reporting
  .PPZ  PowerPoint Packaged Presentation [Buy Office XP at Shop.Microsoft]
  .PQ   Adobe Pagemaker Default Printer Style
  .PQA  Palm Query Application File (database for wireless access)
  .PQB  PowerQuest Batch File
  .PQF  Corel Presentations File
  .PQI  PowerQuest Drive Imaging Software
        PhreeqcI (Computer program for simulating chemical reactions in water.)
  .PQO  PhreeqcI (Computer program for simulating chemical reactions in water.)
  .PQW  Corel Presentations 9 Runtime
  .PQX  Power Quest DRive Image Index
  .PR   EROSION 3D Precipitation Parameters [Format (pdf)]
        Sun Icon/Cursor  [XnView]
  .PR0  CheckMark Software Payroll (Can also be .PR1, .PR2, and/or .PR3)
  .PR1  OzWin CompuServe E-mail/Forum Access Purged Message File
        CheckMark Software Payroll (Can also be .PR1, .PR2, and/or .PR3)
  .PR2  Persuasion Presentation
        dBase IV Printer Driver
        Proteus Session (personal light and sound stimulation system)
        CheckMark Software Payroll (Can also be .PR1, .PR2, and/or .PR3)
  .PR3  dBase IV PostScript Printer Driver
        Aldus Persuasion Presentation
        CheckMark Software Payroll (Can also be .PR1, .PR2, and/or .PR3)
  .PRB  xyALGEBRA File
  .PRC  Palmpilot Resource File [File Format]
        Picture Gear Pocket  [XnView]
  .PRD  Printer Driver
  .PRE  Freelance Presentation
        Microsoft Programmer's WorkBench Settings
        Insight II Dynamics Scratch File
        NeroWave Editor Presets
  .PREFS  Preferences File (various)
  .PRF  Preferences File (various)
        dBase IV Printer Driver
        Monarch Portable Report File (data mining)
        Profiler Output
        PICS Rules File (associated with MSRATING.DLL)
        Polychrome Recursive Format  [XnView]
        Fastgraph Pixel Run Format Grahics
  .PRG  Program File (various)
        OzWin CompuServe E-mail/Forum Access Purged Message File
        WAVmaker Program
        Atari ST Program [Use Steem Engine Emulator]
        SHARP MZ-series Emulator File
        SpecEm Snapshot
  .PRI  LocoScript Printer Definitions
        Prisms  [XnView]
  .PRJ  Project File (various)
        Visual Basic Project
        Symantec Visual Cafe Project
        MultiEdit Editor Project
        3D Studio File
        HitPlayer Advanced Playlist File
        Monarch File (data mining)
        ArcView Projections Definition File
  .PRK  Tony Hawk's Pro Skater 2 Saved Park
        CampgroundMaster/ResortMaster Database
  .PRL  Process Revolution Object Library File (Diagrams, Process Maps, Flow Charts)
        Paint Shop Pro Rough Leather Preset
        Perl Script
  .PRM  Parameter File (various)
  .PRN  Printer Text File (various)
        HP Printer Control Language [SwiftView]
        DataCAD Windows Printer File
        XYWrite Printer Driver
        PostScript File
  .PRO  Guitar Chord File [On-line Guitar Archive]
        PROLOG Program File
        Creamware Pulsar Audio File
        Sid Meier's SimGolf
        Infinity Game Engine Projectile Type Description [More Info]
        PV-WAVE Procedure File (Visualization and analysis)
        Punch Pro Home Design File
        Mussoft Chord Pro Song Format
  .PROFILE  UNIX Bourne or Kom Shell Environment File
            FastTrack Client Profile
  .PROJ  Insight II NMR Project
  .PROPERTIES  Java Properties File (ASCII text file)
  .PRP  Palace Prop File
        InstantDB Database File
  .PRS  Printer Resource File
        WordPerfect Printer Resource Font File
        dBase Procedure
        Harvard File (Harvard Graphics taken over by Serif)
  .PRT  Printer Configuration (various)
        Printer-formatted File
        SCEdit Part File (Roland Sound Canvas sound modules; MIDI-related)
        Unigraphics Part File (CAD modeling data)
        CADKEY Part File
        Pro/ENGINEER Model File
        Associated with the W32/Parrot-A worm; particularly if found in the
          Windows directory along with .EXE files of the same root name.
        Process Revolution Template File (Diagrams, Process Maps, Flow Charts)
        InterComm Pin Use Definition
  .PRV  PsiMail Internet Provider Template
        Previous Version (used for files that change)
        SecretAgent Private Key File (file encryption)
  .PRX  Foxpro Compiler Program
        Process Revolution Diagram File (Diagrams, Process Maps, Flow Charts)
        Microsoft Media Player ver 9 XML/Media File
        Atari ST Executable File
  .PRZ  Freelance Graphics 97 File
  .PS   PostScript  [Ghostscript]  [XnView]
  .PS2  Adobe Level II PostScript File
  .PS3  Adobe Level III PostScript File
  .PSB  Pinnacle Sound Bank
        Project Scheduler Configuration File
        Paint Shop Pro Sunburst Preset
  .PSC  Paint Shop Pro Sculpture Preset
  .PSD  Photoshop Format  [XnView]  [IrfanView]
        Apple Viewer File
        DESIGN II for Windows General Flowsheet (Refining Process Simulation)
  .PSE  IBM Printer Page Segment Bitmap  [XnView]
  .PSEG  IBM Printer Page Segment Bitmap  [XnView]
  .PSEG38PP  IBM Printer Page Segment Bitmap  [XnView]
  .PSEG3820  IBM Printer Page Segment Bitmap  [XnView]
  .PSF  Chiwriter PostScript Printer Font
        PostScript Support File
        PhotoStudio Graphic  [XnView]
        Insight II X-PLOR Molecular Structure File
        Playstation  Sound Format
  .PSH  Punch Home Design Series CAD Data File
  .PSI  PSION A-law Audio
  .PSL  MicroSim PCBoard Padstack Library File
        Sierra Mastercook Layout File
  .PSM  Turbo Pascal Symbol Table
        Protracker Studio Module Format
        Epic Games Sound Data
        SolidEdge CAD File
        PrintShop Mail (desktop publishing)
  .PSMDOC  PrintShop Mail (desktop publishing)
  .PSMODEL  Delcam Powershape (3D CAD)
  .PSN  Post-it® Software Notes
  .PSP  PaintShop Pro Image  [XnView]  [IrfanView]
        Project Scheduler Planning File
        Prodea Synergy Procedure
  .PSR  Project Scheduler Resource File
  .PSS  Sony Playstation Game File
        Axialis Screen Saver Producer File
        Paint Shop Pro Sandstone Preset
  .PST  Microsoft Outlook Personal Folder File
        Ulead Pattern  [XnView]
        Mastercam Post Processor File (CAD/CAM) (usually in .\MILL6 folder)
  .PSW  WinXP Backup Password File
        Paint Shop Pro Straw Wall Preset
  .PSX  Dirty Little Helper Chat File
        X-Plorer/X-Ploder, Cheat Machine, etc. Single Game Save
  .PSY  PLD2 System File
        Psychedelic Windows Products
  .PT   Kodak Precision Transform [Download]
        PassMark PerformanceTest File
  .PT3  Harvard Device Driver (Harvard Graphics taken over by Serif)
        PageMaker Template
  .PT4  PageMaker Template
  .PT5  PageMaker Template
  .PTB  Power Tab Guitar Tablature Editor
        PubTach Batch Works Script
  .PTC  NRG Symphonie Patch File
  .PTDB  Peachtree Accounting Database
  .PTH  4D Database Windows Pathname Document
  .PTI  IBM Configurator Configuration
  .PTIF  Pyramid Encoded TIFF (multiple resolutions in one file)
  .PTK  Red Alert 2 File
  .PTL  Site Builder Path Translation List
        Python Template Language File
        Rational Rose File (model-driven development tool)
        Corel Painter Pattern, Selection or Texture File
        Paint Shop Pro Tile Preset
  .PTM  PolyTracker Music Module
        Microsoft MapPoint Map
        PubTech BatchWorks Macro
  .PTN  PaperPort Thumbnail Images (Hidden file: PPTHUMB.PTN)
        CADKEY Pattern File
  .PTP  Act! Modem Sync File
  .PTR  QMail Qwk Reader Pointer
  .PTS  Infinity Engine Game Tileset
        Halflife Map Creation Debug File
  .PTT  Microsoft MapPoint Template
  .PTX  E-Transcript of Court Proceedings  [Viewer]
        Paint Shop Pro Texture Preset
  .PUB  PGP Public Key Ring
        Ventura Publisher
        Microsoft Publisher Document
        The Sims (Maxis) Family Data
        Print Perfect Gold Template
  .PUBHTML  Microsoft Publisher HTML Document
  .PUBMHTML  Microsoft Publisher Archived HTML Document
  .PUD  Warcraft II PUD Map  [PUD Browser] [PUD Format]
  .PUF  Puffer Encrypted File (File & E-mail Encryption)
  .PUT  Instalit Script
  .PUZ  Across Lite Crossword Puzzle [FAQ]
        General Name for a Puzzle File 
          (e.g., Los Angeles Times, New York Times Crossword Puzzle and others)
        Packed Microsoft Publisher File
  .PVA  Hauppauge DVB-Software
  .PVD  Klos Technologies Packet Analyzer Data File
  .PVL  Instalit Library
  .PVR  PVR-CONV (Convert PVR files to MPG) (Italian site)
  .PVS  Scarlett Expert System Compiler Reserved Words File 
          (Scarlett is not presently available)
  .PVT  Local Fidonet Pointlist
  .PW   Professional Write Text File
  .PWA  Password Agent File
  .PWC  COSMI Street Maps and Vacation Planner
  .PWD  Pocket Word Document
        AutoCAD Password File (ACAD.PWD)
        Password Pro File
  .PWF  ProCite Workforms
        POD-Bot Waypoint File (Instructs the movements of bots in Half-Life games.)
  .PWI  Notes for Windows CE
  .PWK  Password Keeper File
  .PWL  Password List
  .PWM  Pegasus Mail File
  .PWP  Photoworks Image File
        Professional WritePlus Document
        Seattle Film Works Multi-image File (Actually MGI PhotoSuite File) 
          [Filmworks Viewer] 
          [XnView]
  .PWT  HotDog PageWiz Template
        Microsoft Pocket Word Template File
        Autocad Publish-to-Web Template
  .PWZ  PowerPoint Wizard [Buy Office XP at Shop.Microsoft]
  .PX   Primary Index
        Paradox Primer Database Index
  .PXA  Pixia Color Painter File [Japanese]  [XnView]
        Pegs  [XnView]
  .PXB  Pixibox  [XnView]
  .PXD  eJay Mixer File
  .PXE  Partial XML Envelope
  .PXI  Pixie File (scalable vector images viewed with an applet)
        Note: The file $$d2k.pxi is associated with a Trojan
        PlexTools CD Image [IsoBuster Data Recovery Tool]
  .PXJ  Stomp RecordNow MAX (CD burning software)
  .PXL  Pocket Excel Spreadsheet
  .PXN  PictureWorks PhotoEnhancer Graphic Image (Kodak format not now supported)
  .PXR  Pixar Picture  [XnView]
  .PXS  Pegs  [XnView]
  .PXW  Tamarack ArtiScan Driver [Driver Source]
  .PY   PYTHON Script
        Yahoo Saved Messages
        Oracle Batch Procedure
  .PYC  Compiler PYTHON Script
  .PYW  Python Script 
          (Used in Windows to indicate a script needs to be run using PYTHONW.EXE)
  .PZ2  Curious Labs Poser Pose File
  .PZ3  Curious Labs Poser Document
  .PZA  MGI PhotoSuite II/III/4 Album File
  .PZC  GraphPad Prism Script
  .PZD  Pizazz Plus Defaults
  .PZF  GraphPad Prism Project
  .PZL  Puzzle  [XnView]
        Lode Runner Game Puzzle
        Jigs@w Puzzle (virtual jigsaw)
  .PZM  GraphPad Prism
  .PZO  Pizazz Plus Overlay
  .PZP  Pizazz Plus Palette
        MGI PhotoSuite II/III/4 Project File  [XnView]
  .PZS  Pizazz Plus Settings
        MGI PhotoSuite II/III/4 Slide Show File
  .PZT  Pizazz Plus Transfer File
        GraphPad Prism Template
  .PZX  Pizazz Plus Swap File
  .PZZ  Curious Labs Compressed Poser File
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