PIF
|
OS/2 graphics metafile
|
PICVIEW.EXE
|
PIF
|
Program Information File
|
Windows 3.x
|
PIF
|
Vector graphics GDF format file (IBM mainframe computers)
|
|
PiM
|
Pascal Text Mode Image File
|
The Ultimate Draw
|
PIT
|
Compressed Mac file archive created by PACKIT
|
unpackit.zoo
|
PIV
|
Pivot Stick Animator file
|
Pivot Stick Animator
|
PIX
|
Alias image file
|
SDSC Image Tool
|
PIX
|
Inset Pix
|
|
PJ
|
Project
|
CA-SuperProject
|
PJT
|
Additional (FPT) project description file
|
FoxPro
|
PJX
|
Main (DBF) project description file
|
FoxPro
|
PK
|
PacKed bitmap font bitmap file (TeX DVI drivers)
|
|
PK
|
Peak file
|
Cool Edit
|
PK2
|
Quake 2 data file
|
id Software
|
PK3
|
Quake 3 data file
|
id Software
|
PK4
|
Doom 3 and Quake 4 data file
|
id Software
|
PKA
|
Archive
|
PKARC
|
PKG
|
Installer script
|
Next, Mac OS X, Sony PS3
|
PKG
|
P-CAD database
|
P-CAD
|
PKT
|
Fido message packet
|
FTN software
|
PL
|
Palette
|
Harvard Graphics
|
PL
|
Perl source code file
|
|
PL
|
Prolog source code file
|
|
PL
|
Property List font metric file
|
TeX
|
PL1
|
Room plan
|
3D Home Architect
|
PL2
|
Palette
|
Diablo II
|
PL3
|
Chart palette
|
Harvard Graphics 3.0
|
PLA
|
Playlist
|
|
PLB
|
FoxPro library
|
FoxPro
|
PLB
|
P-CAD library
|
P-CAD
|
PLC
|
Add-in file (functions - macros - applications)
|
Lotus 1-2-3
|
PLC
|
P-CAD database
|
P-CAD
|
PLD
|
PhotoLine Document
|
PhotoLine image processing
|
PLE
|
Encrypted Chat Log
|
Messenger Plus! Live Plugin - Log viewer
|
PLIST
|
Mac OS Property List
|
Apple's Property List Editor
|
PLL
|
Prelinked library
|
CA Clipper
|
PLM
|
DisorderTracker2 music module
|
AWAVE
|
PLN
|
Spreadsheet
|
WordPerfect for Win
|
PLP
|
Playlist
|
|
PLP
|
Messenger Plus! Sound Pack
|
Messenger Plus! Live Plugin
|
PLS
|
Playlist file
|
WarpVision (OS/2)
|
PLSC
|
Messenger Plus! Script Pack
|
Messenger Plus! Live Plugin
|
PLSK
|
Messenger Plus! Skin Pack
|
Messenger Plus! Live Plugin
|
PLT
|
HPGL plotter file vector graphics
|
AutoCAD
|
PLT
|
Output file for ploter
|
|
PLT
|
P CAD: Output file editor for PCPLOT or PCPRINT
|
P CAD
|
PLT
|
Page Magic 2.0 paper format
|
Page Magic 2.0
|
PLT
|
Palette
|
|
PLT
|
Table for .pll
|
CA Clipper
|
PLY
|
Data
|
PopMail
|
PLY
|
Presentation screen
|
Harvard Spotlight
|
PLY2
|
Data
|
PLY2 object
|
PLY
|
ZipPack
|
|
PM
|
Auran Jet progressive mesh file (obsoleted by IM and LM)
|
Trainz
|
PM
|
Perl module
|
|
PM
|
Bitmap graphics
|
Presentation Manager
|
PM3
|
PageMaker 3.0 data file
|
PageMaker 3.0
|
PM4
|
Document
|
PageMaker 4
|
PM5
|
Aldus PageMaker 5.0 publication
|
Aldus PageMaker
|
PMC
|
Graphics
|
A4TECH Scanner
|
PMI
|
OS/2 V3 SVGA PMI-File
|
Svga.exe
|
PMI
|
PhatPad note
|
PathWare
|
PMM
|
Program file
|
Amaris BTX/2
|
PMP
|
PhotoMorph Project
|
PhotoMorph
|
PN3
|
Printer device driver
|
Harvard Graphics 3.0
|
PNG
|
Portable Network Graphics
|
|
PNF
|
Pre-compiled Setup Information file
|
Microsoft Windows
|
PNM
|
PBM Portable aNy Map graphics file
|
|
PNT
|
Macintosh painting
|
|
PNT
|
Pointlist segment
|
FTN software
|
PNT
|
QWK reader pointer file
|
MarkMail 2.x
|
POH
|
Optimized .goh file
|
Geoworks
|
POL
|
InnovMetric Software Polygon Models Format
|
|
POLICY
|
Group Policy File
|
Microsoft Windows
|
POLY
|
Data
|
Patrick Flynn's Poly Format - 3D object
|
POP
|
Messages index
|
PopMail
|
POP
|
Pop-up menu object
|
dBASE Application Generator
|
POT
|
Microsoft PowerPoint template
|
|
POV
|
Raytraced graphics image
|
Persistence Of Vision
|
POW
|
Power Chords instrument/song file
|
Power Chords
|
PP
|
Amiga archive
|
POWERPACKER
|
PPA
|
Microsoft PowerPoint Add-in
|
|
PPB
|
Button bar for Print Preview
|
WordPerfect for Win
|
PPD
|
PostScript printer description file
|
|
PPJ
|
Premiere Project
|
Premiere
|
PPK
|
Archive (using for many distributives)
|
PPK
|
PPL
|
PolaroidPalettePlus ColorKey device driver
|
Harvard Graphics 3.0
|
PPM
|
Graphics format (Portable PixelMap)
|
JASC Media C.
|
PPO
|
Preprocessor output
|
CA Clipper 5.*
|
PPP
|
Publication
|
PagePlus
|
PPS
|
Storyboard
|
Personal Producer
|
PPS
|
Microsoft PowerPoint Slideshow (stand alone slideshow)
|
|
PPT
|
Microsoft PowerPoint Presentation
|
Microsoft PowerPoint
|
PPTX
|
Office Open XML Presentation
|
|
PR1
|
Packrat 4.0 data file
|
Packrat 4.0
|
PR2
|
Packrat 4.x data file
|
Packrat 4.x
|
PR2
|
Presentation
|
Aldus Persuasion 2.x
|
PR2
|
Printer driver
|
dBASE IV
|
PR3
|
PostScript printer driver
|
dBASE IV
|
PR3
|
Presentation
|
Aldus Persuasion 3.x
|
PRC
|
container format (envelope) for Palm OS databases
|
Palm OS, Garnet OS, Access Linux Platform, Mobipocket
|
PRC
|
"Product Representation Compact", for embedding 3D data in a PDF file
|
CAE and CAM applications
|
PRD
|
Printer driver
|
|
PRE
|
Presentation
|
Freelance Graphics
|
PRE
|
Settings
|
Programmer's WorkBench, Microsoft C/C++
|
PRE
|
Stork graphic file
|
|
PRF
|
CheckIt Pro v1.0 data file
|
CheckIt Pro 1.0
|
PRF
|
Pixel Run Format graphics file
|
Improces - Fastgraph
|
PRF
|
Printer driver
|
dBASE IV
|
PRF
|
Profiler output
|
|
PRG
|
Program source code (e.g. Clipper language)
|
CA Clipper
|
PRG
|
Program source
|
dBASE IV - FoxPro - Clipper 5 - dBFast
|
PRG
|
Program
|
Atari
|
PRI
|
Printer definitions
|
LocoScript
|
PRJ
|
Borland C++ IDE project file
|
BC.EXE - BCW.EXE
|
PRK
|
SimPark Saved File
|
SimPark
|
PRM
|
Parameters
|
|
PRN
|
Printer driver
|
Signature
|
PRN
|
Text file
|
Lotus 1-2-3 - Symphony
|
PRN
|
Usually printer output file
|
|
PRO
|
Profile
|
used by many programs to store configuration data
|
PRO
|
Graphics profile file
|
DOS
|
PRO
|
Proboard conf. file
|
Proboard
|
PRO
|
Prolog language source
|
|
PRO
|
PROLOG source code file
|
|
PROJ
|
Project File (Interface Builder)
|
NeXT
|
PROPERTIES
|
Java properties file
|
Java applications
|
PROTO
|
Message specification
|
Google Protocol Buffers
|
PRR
|
The Perfect Resume data file
|
Perfect Resume
|
PRS
|
Norton Viewer DLL file
|
|
PRS
|
Presentation
|
Harvard Graphics Win
|
PRS
|
Printer Resource e.g. fonts
|
WordPerfect for Win
|
PRS
|
Procedure
|
dBASE IV
|
PRT
|
P-CAD component
|
P-CAD
|
PRT
|
Part or Drawing
|
Cadkey
|
PRT
|
Printer driver
|
Dr. Halo
|
PRX
|
Compiled program
|
FoxPro
|
PS
|
Document in PostScript format
|
adobe
|
PSA
|
Archive (Pretty Simple Archive)
|
PSA.OUT (GNU)
|
PSB
|
For big Photoshop files
|
Photoshop Document
|
PSD
|
Periscope Debbuger Def file
|
Periscope
|
PSD
|
Photoshop bitmap file
|
Photoshop document
|
PSE
|
see PSEG
|
|
PSEG
|
Bitmap graphics
|
IBM printer Page SEgment
|
PSF
|
Outline PostScript printer font
|
ChiWriter
|
PSM
|
Music format (Protracker Studio Module)
|
Protracker - MASI
|
PSM
|
Symbol table of IDE
|
Turbo Pascal
|
PSM
|
3D Model
|
18 Wheels Of Steel
|
PSN
|
Presentation file for Sound Script
|
Win
|
PSP
|
image file with layers
|
Paint Shop Pro (all versions)
|
PSQ
|
Premiere Sequence
|
Premiere
|
PST
|
Postbox file
|
BMail
|
PST
|
Archive File
|
Microsoft Outlook
|
PSV
|
PlayStation 2/PlayStation 3 saved game
|
PlayStation 2 and PlayStation 3
|
PSW
|
File w/ passwords for any program/game
|
many
|
PT
|
Game crack
|
Player Tools
|
PT
|
Kodak Precition Color Management System
|
|
PT3
|
Device driver
|
Harvard Graphics 3.0
|
PT3
|
Template
|
PageMaker 3
|
PT4
|
Template
|
PageMaker 4
|
PT5
|
Aldus PageMaker 5.0 publication template
|
Aldus PageMaker
|
PTB
|
Power Tab Software
|
Power Tab Editor
|
PTB
|
Script
|
PubTech BatchWorks
|
PTF
|
PlayStation Portable Theme file
|
PSP Theme settings menu
|
PTF
|
ProTools Session File
|
Digidesign ProTools
|
PTG
|
Panasonic Title Graphics
|
|
PTL
|
Premiere Title
|
Premiere
|
PTM
|
Macro
|
PubTech BatchWorks
|
PTM
|
Music format
|
|
PTM
|
Page Magic 2.0 template
|
Page Magic 2.0
|
PTN
|
Pattern
|
Cadkey
|
PTN
|
Pattern
|
CarveWright/CompuCarve Designer
|
PTR
|
OS/2 cursor image file
|
ICONEDIT.EXE
|
PTR
|
QWK reader pointer file
|
QMail
|
PTU
|
Performer Terrain Utilities
|
|
PUB
|
Package File
|
Exstream Dialogue
|
PUB
|
Page template
|
Microsoft Publisher
|
PUB
|
Public key ring file
|
Pretty Good Privacy RSA System
|
PUB
|
Publication
|
Ventura Publisher - 1st Publisher
|
PUD
|
Warcraft II Map file
|
Warcraft II
|
PUT
|
Archive
|
PUT
|
PUT
|
Graphics format
|
WScan
|
PVD
|
Script
|
Instalit
|
PVL
|
Library
|
Instalit
|
PVM
|
Texture Files
|
PVMEdit
|
PVT
|
Local Fidonet pointlist
|
FTN software
|
PW
|
Text file
|
Professional Write
|
PWF
|
Workflow Files
|
Mac OS X Server Podcast Producer
|
PWK
|
Workspace File
|
PolyWorks
|
PWL
|
Password List
|
|
PWP
|
Text document
|
Professional WritePlus
|
PX
|
Paradox 3.0 file
|
Paradox 3.0
|
PXP
|
3DS Process file
|
3D Studio
|
PXR
|
Pixiar Picio
|
AltamiraComposer
|
PXZ
|
Compressed file to exchange media elements
|
PSALMO
|
PY
|
Python script file
|
Python interpreter
|
PYC
|
Compiled Python module
|
Python interpreter
|
PYI
|
Cognos Powerplay Model
|
|
PYO
|
Optimized compiled Python module
|
Python interpreter
|
PZD
|
Default settings
|
Pizazz Plus
|
PZI
|
Graphics format
|
PZP
|
PZO
|
Overlay file
|
Pizazz Plus
|
PZP
|
Palette
|
Pizazz Plus
|
PZS
|
Settings
|
Pizazz Plus
|
PZT
|
Transfer file
|
Pizazz Plus
|
PZX
|
Swap file
|
Pizazz Plus
|
Ext.
|
Description
|
Used by
|
Q0
|
Q0 graphic file
|
|
Q3S
|
Data
|
Quick3D Scene
|
QAG
|
Quick Access Group
|
Norton Desktop
|
QAP
|
Application
|
Omnis Quartz - Omnis Studio
|
QB
|
Tony Hawk's Pro Skater series scripting files
|
|
QBB
|
Quickbooks Backup File
|
|
QBE
|
Saved query (Query By Example)
|
dBASE IV - Quattro Pro
|
QBO
|
Compiled query
|
dBASE IV
|
QBW
|
Spreadsheet
|
QuickBooks for Windows
|
QCH
|
Qt Compressed Help
|
Trolltech Qt Assistant
|
QCP
|
Mp3 extension on Motorola ringtones
|
Motorola Phones
|
QDF
|
Data file
|
Quicken data file
|
QDK
|
Backup of startup files created by Optimize
|
QEMM
|
QDn
|
Data file - segment n
|
Omnis Quartz- Omnis Studio
|
QDV
|
Graphics file
|
Steve Blackstock Giffer
|
QDR
|
Configuration file
|
Q-Dir
|
QEF
|
Query file
|
Q+E for Microsoft Excel
|
QFX
|
Quicken-specific implementation of the OFX specification
|
Intuit Quicken
|
QFX
|
Fax
|
QuickLink
|
QG3
|
Data
|
QuickMem Greek
|
QHC
|
Qt Help Collection
|
Trolltech Qt Assistant
|
QHCP
|
Qt Help Collection Project
|
Trolltech Qt Assistant
|
QHP
|
Qt Help Project
|
Trolltech Qt Assistant
|
QIF
|
Quicken Interchange Format
|
Intuit Quicken
|
QIZ
|
World book quiz
|
World Book
|
QLB
|
Quick library
|
Microsoft C/C++
|
QLC
|
ATM Type 1 fonts script
|
Adobe Type Manager
|
QLP
|
Printer driver
|
QuickLink
|
QM4
|
Options or services file
|
QMail 4.x Mail Door
|
QPR
|
Generated query program
|
FoxPro
|
QPR
|
Print queue device driver
|
OS/2
|
QPX
|
Compiled executable QBE query file
|
FoxPro[
|
QRS
|
Equation Editor support file
|
WordPerfect for Win
|
QRT
|
Graphics format (QRT ray tracing)
|
|
QRY
|
Query
|
dBASE IV
|
QT
|
QuickTime movie (animation)
|
|
QTVR
|
QuickTime VR Movie
|
|
QUOX
|
Question Object Document
|
Quobject Designer and Quobject Explorer
|
QVD
|
QlikView Document (Data)
|
QlikView Compressed Database File
|
QVW
|
QlikView Document (View)
|
QlikView Presentation File
|
QWK
|
QWK reader message file
|
|
QXD
|
Document
|
QuarkXPress
|
QXL
|
Element library
|
QuarkXPress
|
