P

P3 Primavera Project Planner file 

P10 Tektronix Plot 10 drawing  

P65 Pagemaker 6.5 file  

P7C Digital ID file (MIME)  

PAB Microsoft Personal Address Book  

PAC SB Studio II package  

PAK Quake WAD file  

PAL A compressed file  

PAS Pascal source code (Borland)  

PAT DataCAD Hatch pattern file  

PAT Corel Draw pattern  

PAT Advanced Gravis Ultrasound/Forte tech. Patch  

PBD PowerBuilder Dynamic library, an alternative to a native DLL  

PBF Turtle Beach Pinnacle Bank File  

PBK Microsoft Phonebook  

PBL PowerBuilder Library used in the PowerBuilder development environment  

PBM Portable bitmap  

PBR PowerBuilder Resource  

PCD Kodak Photo-CD image  

PCD P-Code compiled test scripts as in Microsoft Tst and Microsoft Visual Test  

PCE Maps Eudora mailbox names to DOS filenames  

PCL Hewlett-Packard Printer Control Language file (printer-ready bitmap)  

PCM Audio file format  

PCM OKI MSM6376 synth chip PCM format  

PCP Symantec Live Update Pro file  

PCS PICS animation  

PCT Macintosh PICT drawing  

PCX ZSoft PC Paintbrush bitmap  

PDB 3Com Palmpilot database file  

PDD Graphic image that can be opened with Paint Shop Pro and possibly other image software  

PDF Adobe Acrobat Portable Document Format file (displayable with a Web browser)
PDF Microsoft Systems Management Server Package Definition File (verifies installed packages when performing an inventory scan of a client) 

PDF Netware Printer Definition File  

PDP Broderbund's Print Shop Deluxe file
PDQ Patton&Patton Flowcharting PDQ Lite file  

PDS Photographic image file (origin not yet identified)   

PF Aladdin Systems Private Files encrypted file  

PFA Type 1 font (ASCII)  

PFB Type 1 font (binary)  

PFC PF Component  

PFM Printer Font Metrics  

PGL HP Plotter drawing  

PGM Portable Graymap (bitmap)  

PGP PGP encrypted file  

PH Temporary file generated by Microsoft Help Compiler  

PHP HTML page that includes a PHP script
PHP3 HTML page that includes a PHP script
PHTML HTML page that includes a PHP script

PHTML Perl-parsed HTML  

PIC PC Paint bitmap  

PIC Lotus picture  

PIC Macintosh PICT drawing  

PICT Mac PICT image file  

PIF Program Information File  

PIF IBM PIF drawing  

PIG Lucas Arts Dark Forces WAD file  

PIN Epic Pinball data file  

PIN Epic Pinball data file  

PIX Inset Systems bitmap  

PJ MKS Source Integrity file  

PJX Microsoft's Visual Foxpro Project  

PJT Microsoft's Visual Foxpro Project  

PKG Microsoft Developer Studio application extension (similar to a DLL file)  

PKR PGP Public Keyring  

PL Perl program  

PLG A file format use by REND386/AVRIL
PLI Oracle 7 data description  

PLM DisorderTracker2 module  

PLS DisorderTracker2 sample  

PLS MPEG PLayList file (used by WinAmp)  

PLT HPGL Plotter drawing  

PLT AutoCAD Plot drawing  

PLT Gerber sign-making software  

PM5 Pagemaker 5.0 file  

PM6 Pagemaker 6.0 file  

PNG Portable Network Graphics bitmap  

PNG Paint Shop Pro Browser catalogue  

PNT MacPaint graphic file  

PNTG Same as PNT file  

POG Descent2 PIG file extension  

POL Windows NT Policy file  

POP Visual dBASE popup file  

POT Microsoft PowerPoint Template  

POV Persistence of Vision ray-tracer  

PP4 Picture Publisher 4 bitmap  

PPA Microsoft PowerPoint Add-in  

PPF Turtle Beach Pinnacle Program File  

PPM Portable Pixelmap bitmap  

PPP Parson Power Publisher  

PPP Serif PagePlus desktop publishing default output  

PPS Microsoft PowerPoint slide show  

PPT Microsoft PowerPoint presentation  

PRC 3Com Palmpilot resource (text or program) file  

PRE Lotus Freelance presentation  

PRF Windows system file  

PRF Macromedia Director settings file  

PRG dBase, Clipper, and FoxPro program source files  

PRG WAVmaker program  

PRJ 3d Studio (DOS) project file  

PRN Print Table (space delimited text)  

PRN DataCAD Windows Printer file  

PRP Oberon's Prospero data conversion product saved project file  

PRS Harvard Graphics for Windows presentation  

PRT A print-formatted file  

PRT Pro/ENGINEER part file  

PRV A PsiMail Internet provider template file 

PRZ Lotus Freelance Graphics 97 file  

PS Postscript-formatted file (a Postscript printer-ready file)  

PSB Pinnacle Sound Bank  

PSD Adobe Photoshop bitmap  

PSI PSION a-law audio  

PSM Protracker Studio Module format  

PSM Sound data for Epic's games  

PSP Paintshop Pro image file  

PST Microsoft Outlook Personal Folder File
PTD Pro/ENGINEER table file  

PTM Polytracker music module (MOD) file
PUB Ventura Publisher publication  

PUB Microsoft Publisher document  

PWD Microsoft Pocket Word document  

PWL Windows 95 password list file  

PWP Photoworks image file (a roll of file that can be viewed using Photoworks)  

PWZ Microsoft PowerPoint Wizard  

PXL Microsoft Pocket Excel spreadsheet  

PY Python script file  

PYC Python script file