Alphabetical list of filename extensions (M–R)

This alphabetical list of filename extensions contains standard extensions associated with computer files.

Contents 

A–E

F–L

M

Ext. Description Used by
M
Mathematica Package File Mathematica
M
MATLAB M-File MATLAB
M
Mercury Source File Mercury
M
Source code Objective-C
M2
WoW Model Object file Blizzard Entertainment games (World of Warcraft/Warcraft series)
M2TS
MPEG 2 Transport Stream Various media playback devices / software
M3U
M3U playlist file Winamp, XMMS
M3U8
Unicode version of M3U playlist file (UTF-8) Winamp, XMMS
M4
m4 macro file
M4A
Advanced Audio Coding
M4r
iPhone ringtone iTunes and iOS devices
M7P
Multilizer 2007 and 2009 localization project file Multilizer
M8M
8MAM8 Model File
MAFF
Mozilla Archive Format Mozilla Firefox (with add-on)
MAI
Mail VAX
MAK
Makefile
MAK
Project file VB – VC ++
MAN
User guide (manual)
MANAGER
Accounting data file Manager – free accounting software
MAP
Color palette file
MAP
Format data Micrografx Picture Publisher
MAP
Linker map file
MAP
Map file (usually created by compilers)
MAP
Map Atlas MapMaker
MAP
Network map AccView
MAP
Game map for Duke Nukem 3D
MAR
Assembly program VAX Macro
MAR
Microsoft ARchive MSN Explorer (possibly other Microsoft products too)
MAR
Mozilla ARchive Mozilla Updater (used to house binary updates to products)
MAS
SmartMaster set Freelance Graphics
MAT
Data MATLAB
MAT
Microsoft Access Table Microsoft Access
MAX
MAX source code file
MAX
Pfaff Embroidery Format Embroidermodder
MB
Memo field values for database Paradox
MBK
Multiple index file backup dBASE IV
<div id="MBP>MBP Metadata .mobi (Mobipocket)
MBR
Master Boot Record File GRUB
MBX
Mailbox data Eudora/ZERBERUS
MCA
Minecraft "Anvil" world format Minecraft 1.2 and onward
MCC
Configuration file Mathcad
MCD
MathCad file MathCad
MCF
Font file Mathcad
MCF
Photo book or photo calendar layout file FotoInsight Designer
MCF
Multimedia Container Format (predecessor of Matroska)
MCI
MCI command script Media Control Interface
MCL
Multi Edit macro library Multi Edit
MCL
Cartesian manipulator for laser systems
MCP
Application script Capsule
MCP
Printer driver Mathcad
MCR
Minecraft saved world "region" file Minecraft (up to 1.1)
MCW
Text file MacWrite II
MD
Archive mdcd10.arc
Text file found on github on many project readme.pm Mark Down
Quake 2 Model File id Software
Quake 3 Model File id Software
MD5
Doom 3 and Quake 4 Model File id Software
MDA
Data Microsoft Access
MDA
Microsoft Access system database Microsoft Access
MDB
Microsoft DataBase Microsoft Access
Media Descriptor File, binary files in which the actual disc (CD/DVD) data is stored Alcohol 120%
Master Data File, a Microsoft SQL Server file type Microsoft SQL Server
Measurement Data Format, a binary file format for vector measurement data automotive industry, developed by Robert Bosch GmbH
MDL
Model 3D Design Plus or Simulink
MDL
Spreadsheet CA-Compete!
MDL
GoldSrc Model File (Quake-Based Engine) Valve Corporation
MDL
Source Engine Model File Valve Corporation
MDL
Quake 1 Model File id Software
MDL
Nintendo GameCube Luigi's Mansion Model Nintendo
MDM
Modem definition file TELIX
MDMP
Mini dumpfile
MDR
Microdrive file ZX Spectrum emulator by g.a.lunter
MDS
Midi Session Sound Imp.
MDT
Data table Microsoft ILink incremental linker
MDX
Multiple index file dBASE IV
MDZ
Text description of music module Cubic Player – Cross-View
ME
MultiEdit configuration MultiEdit
ME
Text file READ.ME
MEB
Macro Editor bottom overflow file WordPerfect Library
MEC
MECCA source Maximus
MED
Macro Editor delete save WordPerfect Library
MED
Music format MED/OctaMED
Mediawiki
Wiki Markup most Wiki packages
MEM
Macro Editor macro WordPerfect Library
MEM
Memory variable save file dBASE IV – FoxPro – Clipper
MEM
Memos datafile Clarion
MEM
Mnemosyne database Mnemosyne; other spaced repetition software
MEQ
Macro Editor print queue file WordPerfect Library
MER
Macro Editor resident area (vakioalue) WordPerfect Library
MES
Macro Editor work space file WordPerfect Library
MES
Message
MET
Document Omnipage Pro
MET
Macro Editor top overflow file WordPerfect Library
MET
OS/2 graphics metafile PICVIEW.EXE
MEU
Menu group DOS Shell
MEX
Macro Editor expound file WordPerfect Library
MEX
MEX file (executable command) Matlab
MF
Metafont file TeX
MFA
Source code file Multimedia Fusion 2 / The Games Factory 2
MFF
MIDI Cakewalk, MTPro 4
MFM
Music format DMP
MGF
Font Micrografx
MGF
Materials and Geometry Format
MGX
Designer 4.1 Drawing Designer 4.1
Web Archive Single File
MIB
Snmp MIB file
MID
Standard MIDI file music synthetizers, Winamp
MIDI
See MID
MIFF
Magick Image File Format
MII
Datafile MicroStat-II
MIME
Message in MIME format (RFC822)
miniUSF
Nintendo proprietary MIDI file format for the Reality Signal Processor (Nintendo 64) Nintendo 64 games
MIO
MyInfo topic Milenix MyInfo
MIS
Mission, used by many games
MIT
Mitsubishi Embroidery Format Embroidermodder
MIX
Object file Power C
MK
Makefile
MKE
Makefile Microsoft Windows SDK
MKG
Makefile
MKI
Graphics format (Japan MKI)
MKI
Japanese graphics MAKIchan format MagView 0.5
MKS
Data TACT
Matroska Multimedia Container Media Player Classic, Windows Media Player, Matroska Splitter
ML3
Project Milestones 3.x
MLB
Macro library file RT-11, Symphony
MLI
3DS Materials Libraries 3D Studio
MLRAW
Data Moonlight Creator RAW format 3D object
MLV
LabVIEW MathScript
MM
Text file MultiMate Advantage II, FreeMind mind map file (XML)
MM
Source code Objective-C++
MMF
Mail message file Microsoft Mail
MMM
Multimedia movie file, RIFF RMMP format MacroMind Director 3.x
MMO
Memo writer file RapidFile
MMP
Output video format from Bravado board
MN
MuPAD Pro Notebook Workspace file of MuPAD (integrated in Matlab)
MND
Menu source AutoCAD Menu Compiler
MNG
Map DeLorme Map'n'Go
MNT
Additional (FPT) menu description file FoxPro
MNT
Menu memo FoxPro
MNT
Surface metrology or image analysis document MountainsMap
MNU
Advanced macro file HP NewWave
MNU
Menu AutoCAD Menu Compiler – Norton Commander – Signature
MNU
Microsoft Mouse menu (for DOS apps)
MNX
Compiled menu file AutoCAD
MNX
Main (DBF) menu description file FoxPro
MNY
Account book Microsoft Money
MO?
Packed mail FTN software
MOB
Device definition file PEN Windows
MOBI
eBook Mobipocket
MOD
AMPL model file AMPL
MOD
Modula language source
MOD
MODULA-2 source code file Claridiv id="MDZ"> MDZon Modula-2
MOD
Module—used by Windows for DLL which implement DOS support Win
MOD
Music format (Amiga module) DMP – ST – MDP – VP
MOL
MOD4WIN PlayList Mod4Win
MOL
MDL Molfile RasMol
MOL2
Tripos’ Sybyl MOL2 Format SYBYL, RasMol
MON
SYSGEN monitor build procedure RT-11
MON
Monitor description ReadMail
MOP
MOPAC input file MOPAC, RasMol
MOV
Animation format (Mac) QuickTime
MOV
Movie file AutoCAD AutoFlix
MP2
Mpeg audio file Winamp, xing
MPEG audio stream, layer 3 AWAVE, CoolEdit(+PlugIn), Winamp, many others
MP4
multimedia container format, MPEG 4 Part 14 Winamp
MPA
MPEG audio stream, layer 1,2,3 AWAVE
MPC
Calendar file Microsoft Project
MPC
Musepack audio
multimedia containter format, video, audio MPEG Player, Winamp
MPG
see MPEG
MPKG
Multipackage installer script Mac OS X
MPL
MediaRack Midi Playlist MediaRack
MPM
MathPlan macro WordPerfect Library
MPP
Project file Microsoft Project
MPPZ
MagicPlot project file MagicPlot
Mo'PaQ Archive Blizzard games
MPR
Generated executable menu file FoxPro
MPR
Multilizer 5.x and 6.x localization project file Multilizer
MPR
Command & Conquer: Red Alert 2 map file Red Alert 2
MPT
Bitmap graphics (Multipage TIFF)
MPV
View file Microsoft Project
MPX
Compiled executable menu file FoxPro
MPX
Video format
MPZ
Miradi Project Zipfile Miradi
MRB
Multiple Resolution Bitmap graphics file Microsoft C/C++
MRC
mIRC file mIRC
MRK
Windows User Benchmark Win95
MRS
Macro Resource file WordPerfect for Win
MS
Microsoft antivirus report MSAV
MSC
Microsoft C makefile
MSC
management saved console[1] Microsoft; Microsoft MMC[2]
MSD
Secure and Encrypted File mysecuredelivery/Download
MSDL
Manchester Scene Description Language
MSDVD
Windows DVD Maker Project Windows DVD Maker
MSE
Set file Magic Set Editor
MSG
Message base (e.g. HMB)
MSG
Message text file (ASCII) Microsoft Outlook
MSG
ZVoice digitized voice file
MSI
Windows Installer Package Windows Operating Systems
MSO
Microsoft Word OLE Web Page Storage Stream Microsoft Office
MSO
Microsoft Outlook metadata for a Microsoft Word 2000 email attachment[3] Microsoft Outlook
MSP
Bitmap graphics file Microsoft Paint
MSP
Graphics format Microsoft Paint
MSPRODUCER
Media Project Microsoft Producer (for Microsoft PowerPoint XP/2003) Project
MSQM
data Microsoft Message Queuing
MSN
Project National Instruments for NI MultiSim-Electronic Circuit simulator
MSS
Manuscript text file Perfect Writer – Scribble – MINCE – Jove
MST
Document MS Test
MST
Minispecification file Prosa
MST
Setup script file Microsoft Windows SDK
MSW
Text file Microsoft Word
MSX
CP/M archive MSX
MTH
Math file Derive
MTL
Wavefront
MTM
Music format MultiTracker
MTS
Master Track Pro Files MTPro 4
MTS
data EA Sports F1 series, car physics
MTV
MTV Ray Tracer graphic file
MTW
Datafile Minitab
MU
Quattro pro for DOS Menu definition file Quattro Pro
MUM
MATLAB CAPE-OPEN Unit Operation Model file Matlab
MUM
Microsoft update file Microsoft
MUS
Finale music document Finale
MUS
Music format (MIDI in Doom)
MUS
Sound file MusicTime
MUZ
Hover Game MIDI File Windows' Hover! Game[4]
MVF
Stop frame file AutoCAD AutoFlix
MVI
Movie command file AutoCAD AutoFlix
MVO
Data Mad Virgin 3D object
MVW
Log file Saber LAN
MWF
Animation ProMotion
MWS
MWave DSP synths instrument AWAVE
MXF
Material exchange format (RFC 4539, SMPTE 377M)
MXL
PackRat 5.0 support DLLs PackRat 5.0
MXM
Material Maxwell Render
MXP
Adobe Extension File Adobe Dreamweaver and Adobe Flash
MXP
3ds Max Configuration File 3ds Max
MXP
MasterCook exported recipe
MXT
Data Microsoft C
MYP
Presentation MM Make Your Point
MZ
Binary-format Map MazeEdit
MZE
Text-format Map MazeEdit
MZG
Binary-format Map Collection MazeEdit
MZX
Binary-format Encrypted Map MazeEdit

N

Ext. Description Used by
NAM
Name Space Modules Novell NetWare
NAP
Naplps file (VideoShow) EnerGraphics
NAPLPS
North American Presentation Layer Protocol Syntax
NB
Text file Nota Bene
NB
Wolfram Mathematica Notebook (see Wolfram Language) Mathematica
NBF
Nokia Backup File Nokia Mobile Phones
NBS
Minecraft Note Block Studio file Minecraft Note Block Studio
NC
Binary Data netCDF software package
NC
Instructions for NC (Numerical Control) machine CAMS
NC
Non-error checking preprocessed Goc source code Geoworks
NCC
CNC (Computer Numeric Control) control file CamView 3D
NCD
NC Drill File (Excellon Format, printed circuit board hole definitions) Most PCB layout software
NCD
Norton Change Directory support file Norton Commander
NCP
Re-volt Collision file Re-volt
NDB
Network database Intellicom - Compex
NDS
Nintendo DS ROM file used for Homebrew and commercial (Game) files on DS Nintendo DS
NDL
Nodelist file
NDX
Index file dBASE II - III - IV - dBFast
NEF
Nikon RAW image format Nikon cameras
NEO
Raster graphics file Atari Neochrome
NES
iNES ROM image format
NET
Network configuration/info file
NEU
Pro/Engineer neutral file format PTC Pro/Engineer
netCDF
Network Common Data Format
NEW
Ameco Embroidery Format Embroidermodder
NEW
New info
NFF
Haines Neutral File Format
NFF
WorldToolKit Neutral File Format
NFO
Folioview database
NFO
Help format Nextpage Folio
NFO
Info file Compact NFO Viewer
NG
Hypertext Database Norton Guide
NGO
NG linker object file NGML
NGS
NG compiler source file NGC
NIF
netimmerse/gamebyro file
NIL
NIL Icon Hear-It
NITF
National Imagery Transmission Format
NK2
e-mail address autocomplete archive Microsoft Office Outlook
NL
Norton Desktop Icon Library
NLM
Netware loadable module Novell Netware
NLS
National Language Support file MS-DOS
NLX
Form FormWorx 3.0
nmf
Node Map File Used by SpicyNodes
nnn
Arj archive volumes up to 999 ARJ
nnn
Netware unicode rule table (e.g. 1250_Uni.036) Novell Netware
nnn
News about smth with ext. of ver. number
nnn
RAR archive volumes up to 999 RAR
NOT
Notation
NOT
Yard Notes File FYM
NP
Project schedule (Nokia Planner) Nokia Planner
NPI
Source for DGEN.EXE interpreter dBASE Application Generator
NPJ
Nile Project Game Mission Editor
Nero Disc Image File Nero Express / Burning ROM
NRW
Nikon Coolpix RAW image Nikon
NSA
media Nullsoft Streaming Audio
NSF
database Lotus Notes
NSF
Music module NES Sound File
NSS
Norton screensaver module NC - NDW Screen Saver
NST
Music module Amiga Noise Tracker
NSV
media Nullsoft Streaming Video
NSX
Compound index file SuccessWare SIX 3.00
NT
Startup files Windows NT
NT3
BAHN Layout file JBSS BAHN
NTF
database design template Lotus Notes
NTH
Nokia Theme File Nokia PC Suite
NTR
Executable ASCII text file (strip header and rename) netrun31.zip
NTS
Executable ASCII text file (strip header and rename) netsend1.zip
NTS
Tutorial Norton
NTX
Database index file Clipper 5
NUF
Message for new users on their 1st call Procomm Plus
NUMBERS
Numbers spreadsheet file Numbers (Apple iWork '08)
NV
NewViews DOS accounting database QW Page NewViews
NV2
NewViews accounting database QW Page NewViews
NWS
Info text file (latest news) (ASCII)
NXT
Sound (NeXT format)

O

Ext. Description Used by
O$$
Outfile Sprint
O
Object file UNIX - Atari - GCC
O01
Typhoon vOice file AWAVE
OAZ
Fax NetFax Manager
OB
Object cut/paste file IBM LinkWay
OBD
Microsoft Office Binder MSOffice
OBJ
Compiled machine language code
OBJ
Object code Intel Relocatable Object Module
OBJ
Wavefront Object
OBJF
Data Triangle strips object
OBR
Object browser data file Borland C++
OBS
Script ObjectScript
OBT
Microsoft Office Binder Template MSOffice
OBV
Visual interface ObjectScript
OBZ
Microsoft Office Binder Wizard MSOffice
OCF
Object Craft File Object Craft
OCD
OCAD Map File OCAD
OCR
Incoming fax transcribed to text FAXGrapper
OCT
Musical file Pctalizer
OCX
New Custom Control's format in VB 4.0 Visual Basic
OCX
OLE custom control
ODB
OpenDocument database OpenOffice.org Base
ODF
OpenDocument formula OpenOffice.org Math
ODG
OpenDocument drawing OpenOffice.org Draw
ODIF
Open Document Interchange Format
ODL
Object Description Language
ODL
Type library source Visual C++
ODM
OpenDocument master document OpenOffice.org Writer
ODP
OpenDocument presentation OpenOffice.org Impress
ODS
OpenDocument spreadsheet OpenOffice.org Calc
ODT
OpenDocument text document OpenOffice.org Writer
OEACCOUNT
XML format, account files Microsoft e-mail software: Outlook Express, Windows Mail, Windows Live Mail, Microsoft Outlook
OFD
Form definition ObjectView
OFF
Object File Format vector graphics file
OFF
Object File Format vector graphics
OFM
PostScript font description file
OFN
Microsoft Office documents Microsoft Office
Ogg multimedia container format
OHB
Source On Hand Basic
OHS
Outbound History Bink/+
OIF
QuickBase file format
OKT
Music (8 channels) Oktalyzer
OKT
Music format Oktalyzer
OLB
Object library VAX
OLD
Backup file
OLI
Text file Olivetti
OLSR
Configuration file olsrd
OMA
Audio file Labelgate CD 2, MAGIQLIP2
OMG
Audio file Sony compressed audio file (ATRAC3)
OMF
Open Media Framework Avid Media Composer
OOF
Data Outrage 3D Object Format (Descent)
OOG
Data WEBOOGL 3D object
OOM
Swap file Shroom
OPJ
Origin Project File Origin version 4.1 and later
OPN
Active options Exact
OPT
Options name used by many programs for configuration information
OPT
Delphi project options Borland Delphi
OPT
Optimize support file QEMM
OPW
Organization chart Org Plus for Windows
OPX
Inactive options Exact
ORA
Parameter file Oracle
ORC
Orchestra MIDI file CSound
ORG
Calendar file Lotus Organizer
ORG
Older Origin Project Origin versions 4 or earlier
OSK
osu! skin osu!
OSR
osu! replay osu!
OSZ
osu! beatmap osu!
OTG
OpenDocument drawing template OpenOffice.org Draw
OTB
Over-the-air bitmap graphics
OTF
Subtitle font information for media content Media players / software which support PGS subtitling
OTH
OpenDocument HTML document template OpenOffice.org
OTL
Outline font description Z-Soft Type Foundry
OTL
Ventura Publisher's Type Foundry Outline Editor format
OTL
The Vim Outliner A vim plugin
OTP
OpenDocument presentation template OpenOffice.org Impress
OTS
OpenDocument spreadsheet template OpenOffice.org Math
OTT
OpenDocument text document template OpenOffice.org Writer
OTX
Text file Olivetti Olitext Plus
OUT
Output file
OUT
Design II for Windows Output file
OV1
Overlay file (part of program to be loaded when needed)
OV2
Overlay file (part of program to be loaded when needed) TomTom Point of Interest
OVD
Datafile ObjectVision
OVL
Overlay file (part of program to be loaded when needed)
OVR
Overlay file (part of program to be loaded when needed)
OXT
OpenOffice.org extension OpenOffice.org

P

Ext. Description Used by
P
Database PROGRESS source code PROGRESS
P PASCAL source code file
P Parser source code file
P Picture file APPLAUSE
P Rea-C-Time application parameter file ReaGeniX code generator
P0?
Split archive UC2 SAS.EXE
P10
Tektronix Plot GCGW
P10 Certificate Request
P12
Personal Information Exchange "Crypto Shell Extensions"
P16
Music (16 channels) ProTracker Studio 16
P22
Patch file (Patch22) Patch22
P80
PLM-80 source
P86
PLM-86 source
p2v
Backupfile of a project in eventplanning software plan2viz (windowsbased)
P3T
PlayStation 3 Theme file PS3 Theme settings menu
PA1
Worktable PageAhead
PAC
SBStudio II Package or Song SBStudio II
PAC STAD Image (graphics ?)
PACK
? ?
PACKAGE
Contents The Sims 2 - Spore - The Sims 3
PAD
Automatic print definitions Produa
PAD Keypad definition Telemate
PAF
For Personal Ancestral File data files
PAGES
Pages document file Pages (Apple iWork '08)
PAK
Archive Pak
PAL
Palette file Microsoft Draw - Win. Paintbrush - many
PAL Palette file Diablo II
PAM
PAM Portable Arbitrary Map graphics format Netpbm
PAN
Printer-specific file (copy to coreldrw.ink) CorelDRAW
PAR
Parameter file Fractint
PAR PARTS application Digitalk PARTS
PAR
Permanent output file Windows 3.x
PAR Parity Archive
PAR2
Parity Archive v2
PART
Part of a download file
PAS
Pascal language source Borland Pascal
PAT
Gravis Ultrasound Patch Convert (c) Villena
PAT Hatch patterns AutoCAD - Photostyler
PAT Vector fill files CorelDRAW
PAT Pattern File Photoshop
PAT GIMP pattern
PB
Fax FAXability Plus
PB Phonebook WinFax Pro
PB Proboard Conf. files Proboard
PB Setup file PixBase
PB1
Document First Publisher for Windows
PBA
Powerbasic BASIC source code Genus
PBD
Phone book FaxNOW! - Faxit
PBD
Molecule (protein data bank)
PBI
Powerbasic include file Genus
PBI
Profiler Binary Input Microsoft Source Profiler
PBK
Microsoft Network Phone book MSN
PBL
Powerbasic library Genus
PBLIB
Power Library PowerBASIC
PBM
PBM Portable Bit Map graphics format Jasc Media C
PBM
Planar bitmap graphics XLib
PBO
Profiler Binary Output Microsoft Source Profiler
PBT
Profiler Binary Table Microsoft Source Profiler
PC
Text file containing IBM PC specific info
PC3
Custom palette Harvard Graphics 3.0
PC8
ASCII text IBM8 character set NewWave Write
PCA
Perfect Clarity Audio Sony Vegas Pro
PCB
P-CAD database P-CAD, PCBExpress, and other Printed Curcuit Board design software
PCB
Artwork design file (Circuit board design) Zuken CadStar
PCC
Cutout picture vector graphics PC Paintbrush
PCD
Graphics format (Kodak Photo-CD)
PCD
Kodak Photo-CD Image graphics file (768x512) hpcdtoppm
PCD
Pfaff Embroidery Format Embroidermodder
PCF
Pixel Coordination Format
PCH
Patch file
PCH
Precompiled header Microsoft C/C++
PCJ
Multimedia authoring tool graphics file IBM's Linkaway-Live
PCK
Pickfile Turbo Pascal
PCL
HP-PCL graphics data file HP Printer Control Language
PCM
OKI MSM6376 synth chip PCM AWAVE
PCM
PCM Authorware
PCM
Pfaff Embroidery Format Embroidermodder
PCQ
Pfaff Embroidery Format Embroidermodder
PCS
Microsoft PowerPoint picture package Microsoft PowerPoint - Microsoft ClipArt Gallery
PCS
PCSurvey file PCSurvey by Softart - Land Surveying Software
PCS
Pfaff Embroidery Format Embroidermodder
PCT
Bitmap graphics file Macintosh b&w PICT1 - color PICT2
PCW
Text file PC Write
PC paintbrush bitmap format QPeg - Display - ZSoft - PC Paintbrush
PDA
Bitmap graphics
PDB
Packrat 5.0 data file Packrat 5.0
PDB container format (envelope) for Palm OS databases Palm OS, Garnet OS, Access Linux Platform, e-book
PDB debugging data Microsoft Windows
PDB Molecule (protein data bank)
PDD
Adobe Photoshop Elements Image Adobe Photoshop Elements
PDE
Pathology Data Exchange
PDE
data PowerDesk Encrypted
Adobe's Portable Document Format Adobe Acrobat Reader
PDF
Graphics file (ED-SCAN 24bit format)
PDF
Package Definition File
PDF
PCAD Database Interchange Format Pdifin.exe - Pdifout.exe
PDF
Print device information Netware
PDG
Print Shop Deluxe data file
Portable Database Image
PDL
Project Description Language file Borland C++ 4.5
Program Deskmate
PowerDesigner's physical data model (relational model) file format PowerDesigner
Visual Basic (VB) Project Information File Visual Basic
PDN
Image file Paint.NET
PDS
PALASM Design Description
PDS
Pds graphics
PDS
Planetary Data System Format
PDS
Pldasm source code file (hardware assembly)
PDV
Printer driver Paintbrush
PDW
Document Professional Draw
PEB
Program Editor bottom overflow file WordPerfect Library
PED
Program Editor delete save WordPerfect Library
PEM
Program Editor macro WordPerfect Library
PEQ
Program Editor print queue file WordPerfect Library
PER
Program Editor resident area WordPerfect Library
PES
Program Editor work space file WordPerfect Library
PET
Program Editor top overflow file WordPerfect Library
pet
package[5] Puppy Linux
PEX
Proboard EXecutable file (Executed from PB) Proboard
PFA
PostScript Font File
PFA
Type 3 font file (unhinted PostScript font)
PFB
Adobe Acrobat document Adobe Acrobat Reader
PFB
PostScript font Adobe Type Manager (ATM)
PFC
(Personal File Cabinet) contains e-mail, preferences and other personal information AOL
PFC
Text file First Choice
PFK
Programmable function keys XTreePro
PFM
Windows Type 1 font metric file
PFS
Database (PFS:FILE) - text file (PFS:Write) PFS
PFT
Printer font ChiWriter
PG
Page cut/paste file IBM LinkWay
PGD
PGP cripted disk
PGI
Printer Graphics File device driver PGRAPH library
PGL
HP Plotter vector graphics format
PGM
Graphics format (Portable GrayMap) JASC Media C
PGM
Program Signature
PGP
Support file Pretty Good Privacy RSA System
PGS
Manual page man4dos
PH
Optimized .goh file Geoworks
PH
Perl header file
PH
Phrase-table Microsoft C/C++
PHD
PolyHedra Database
PHM
Phone book DN - Lync
PHN
Phone list UltraFax - QmodemPro
PHO
Phone database Metz Phone for Windows
PHP
PHP file
PHP3
PHP 3 file
PHP4
PHP 4 file
PHF
Database File Nuverb Systems Inc: Donarius
PHR
Phrases LocoScript
PI2
Portrait Innovations High Resolution Encrypted Image file Portrait Innovations Studio2 (proprietary)
PIC
123 Vector graphics format CShow - Alchemy - Paint (Pictor)
PIC
Bitmap graphics file Macintosh b&w PICT1 - color PICT2
PIC
Lotus picture
PIC
PIXAR picture file SDSC Image Tool
PICT
Macintosh Picture
PIE
GlovePIE script file GlovePIE
PIF
OS/2 graphics metafile PICVIEW.EXE
PIF
Program Information File Windows 3.x, 9x, NT
PIF
Vector graphics GDF format file (IBM mainframe computers)
PiM
Pascal Text Mode Image File The Ultimate Draw
PIPE
PIPE-FLO project design file PIPE-FLO Professional
PIT
Compressed Mac file archive created by PACKIT unpackit.zoo
PIT
Partition Information Table for Samsung's smartphone with Android Odin3
PIT
File used to connect to a remote system. Dell (previously Quest) vWorkspace
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
PKL
Pickle file(for python(programming language) I/O)
Quake 2 data file id Software
Quake 3 data file id Software
PK4
Doom 3 and Quake 4 data file id Software
PKA
Archive PKARC
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
PL1
PL/I source file PL/I compilers
PL2
Palette Diablo II
PL3
Chart palette Harvard Graphics 3.0
PLA
Playlist
PLANTUML
UML Diagram (also PU) PlantUML
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
PLI
PL/I source file PL/I compilers
PLIST
Mac OS Property List, also used on iOS, NeXTSTEP, and GNUstep 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
PLY
ZipPack
Polygon File Format or the Stanford Triangle Format. 3D Scanners
PLY2
Data PLY2 object
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
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
POF
Altera FPGA programming file (External Flash) Altera Quartus
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
MS Office Open-XML Presentation Microsoft PowerPoint
PPSX
MS Office Open-XML Auto-Play Presentation Microsoft PowerPoint
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
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
PRJ
Mkd (Unix command) Mkd project file to extract documentation
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
Punch! Home Design File Punch! Home and Landscape
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
Design II for Windows Process Simulation Diagram
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
Pro Tools Session File Digidesign Pro Tools
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
PTX
Pro Tools 10 session file Avid Pro Tools
PU
UML Diagram (also PLANTUML) PlantUML
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
PVK
Private Key File Microsoft Authenticode
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
PYD
Python DLL Python interpreter
PYI
Cognos Powerplay Model
PYK
PYK Compressed File PYK
PYO
Optimized compiled Python module Python interpreter
PYW
Python Script Without Console Window 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

Q

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
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
QRP
Database report file QuickReport

[6]

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

R

Ext. Description Used by
R
Ratfor file
R
Script file R
R00, R01, ...
Part of a multi-file RAR archive
R2D
Reflex 2 datafile Reflex 2
R3D
Red Raw Video (raw video data created with a Red camera) Red Camera
R8
Raw graphics file (one byte per pixel) plane one PicLab
R8P
PCL 4 bitmap font file Intellifont
RA
Remote Access conf. files RA
RA0, RA1, ...
Part of a multi-file RAR archive
RAD
2-op FM music Reality AdLib Tracker
RAD
Radiance
RAL
Remote Access Language file Remote Access
RAM
Ramfile RealAudio
Archive RAR
Graphics format SUN Raster
RAT
Datafile (RATS)
RAW
HSI raw graphic file
RAW
PCM Signed Raw Sound File
RAW
QRT graphic file
RAY
Rayshade
RB
Ruby Script file
RBF
Datafile Rbase
RBXM
ROBLOX "model" ROBLOX
RBXL
ROBLOX "level" ROBLOX
RC
Configuration file emacs
RC
Resource Compiler script file Microsoft C/C++, Borland C++
RC
Resource Script Resource Writer
RC
UUPC configuration files UUPC
RC
Windows resource compiler script RC.EXE -Resource WorkShop - OS/2
RCG
Netscape newsgroup file (netsc.rcg)
RCT
Roller Coaster Tycoon
RData
Data file R
RDF
Compiled UIC source code Geoworks UI Compiler
RDI
Device-independent bitmap file (RIFF RDIB format)
RDP
RDP connection Remote Desktop connection
RDX
Datafile Reflex
REC
Archivation protocol ARCSERVE
REC
Datafile EpiInfo
REC
Record file Sprint
REC
Windows Recorder Macro File WinRecorder
RED
Path info Clarion Modula-2
RED
REDuced nodelist file T-Mail nodelist Compiler
REF
Cross-reference
REG
OLE Registration file Windows 3.x
REG
Registration information or key
REL
Foreground job relocatable file RT-11
REM
Remarks definition Sourcer
REM
Remarks
REP
QWK reader reply file
REP
Report file used by many applications
REP
Report Report Designer - CodeReporter - DataBoss
REQ
File request FTN Software
RES
Compiled resource Microsoft C/C++, Borland C++
RES
DBASE resources dBASE IV
RES
Windows compiled resource package Win
REV
Revision file Geoworks
REX
PharLab executable file (old format) PharLab
REX
Report definition Oracle
REX
Rexx language source file Rexx
REZ
Resource file
RF
Sun raster graphics file
RFM
Report ForMat (script for customized report) Nuverb Systems Inc: Donarius
RFT
DCA/RFT Revisable Format Text file IBM DisplayWrite 4.0-5.1
RGB
SGI RGB image file (RAW) SDSC Image Tool
RGX
Symbol tables etc. info ReaGeniX code generator
RH
Resource header file Borland C++ 4.5
RH
Windows resource file header RC.EXE
RHistory
Command history logfile R
RI
Data Lotus 1-2-3
RIB
Graphics (Renderman Interface Bytestream) 3D Reality
RIC
Fax Ricoh
RIF
RIFF bitmap graphics (Resource Interchange File Format) Fractal Design Painter
RIP
TeleGrafix Remote Imaging Protocol Maximus 3.0
RIX
Graphics (ColoRIX Image File) ColoRIX
RL4
Bitmap graphics
RL8
Bitmap graphics
RLA
Wavefront raster image file SDSC Image Tool
RLB
Data hgw.rlb Harvard Graphics Win
RLC
Graphics 1bit/pixel scanner output
RLD
Norton Commander 5.0 temp file NC 5.0
RLD
OSIMapDef. RecLoad Definition
RLE
Utah Run Length Encoded rasterfile graphic file SDSC Image Tool
RLZ
REALIZER source code file CA-Realizer
RM
RealMedia RealPlayer
RMB
data RegistryMaster
RMI
Windows alternate synthesized sound format RIFF RMID format
RMK
Make file CA Clipper - RMAKE
RealMedia Variable Bitrate RealPlayer
RN
XPL program for Nota Bene users
RNA
Real Native Application File
RND
Rendering Slide AutoCAD AutoShade
Rnn
Multi volume RAR archive RAR
RNO
Runoff file VAX
ROL
FM music Adlib Music File Roland
ROM
Read Only Memory image in emulators, AONs, etc.
ROO
CODASYL DBMS Database Root Oracle
RPB
Data report file used by CP Backup CP Backup
RPC
Rich Photorealistic Content ArchVision
RPD
Database RapidFile
RPF
AutoCAD pattern ACAD
RPL
Text document Replica
RPM
Red Hat Package Manager Red Hat Linux
RPT
Report file used by many applications
RRD
Reduced Resolution Dataset ESRI (GIS)
RS
Data file Amiga Resource - Reassembler
RS
Rust language source
RS_
Resource fork of a Macintosh file Mac-ette
RSC
Resource file ViewMax - many
RSL
Application - Project resolver one
RSL
Resource Library used by PC Tools for Windows PC Tools - Win
RSP
Response file (text file containing input expected by e.g. LINK)
RSP
Response File OS/2
RST
reStructuredText Docutils
RSY
FLEXIT Multishot Survey Raw Data file FLEXIT
RTF
Rich Text Format text file (help file script) many - Microsoft Word
RTFD
RTF-Packet NeXT
RTL
HP RTL graphic file
RTL
Run-Time library Norton Utilities
RTL
Text file
RTP
RTPatch software update package data file Pocket soft patch
RTS
Realizer executable file
RTS
Runtime library file CA-Realizer
RUL
Echo-conference rules
RUN
AMPL script file AMPL
RUN
PC Tools for Windows batch file PC Tools
RUNZ
pseudo-executable file, used in Portable Apps and software installers for Super OS RUNZ Framework
RUS
Russian text
RV
Mobile pricelist data file Mobile
RVF
TRichView
RVW
Review
RV
Raw Wind Data
RWS
Borland Resource Workshop symbol file Resource Workshop
RWS
Resource Workshop data file Borland C++
RWX
Criterion RenderWare
RWX
MEME Shape File
RWX
Script RenderWare
RWZ
Microsoft Outlook Rules Wizard File Microsoft Outlook
RXD
Reflex 1 datafile Reflex 1
RZK
File Crypt password file All text editors
RZX
File Crypt encrypted file File Crypt (Akte Krypta, Kriptirnik)

S–Z

References

  1. Zvereva, O. M. (2004). "Часть 2: ОПЕРАЦИОННАЯ СИСТЕМА WINDOWS 2000 PROFESSIONAL: КОНСОЛИ УПРАВЛЕНИЯ. ТИПОВЫЕ ЗАДАЧИ АДМИНИСТРИРОВАНИЯ" [Part 2: The Windows 2000 Professional operating system: Control console; standard administration tasks] (PDF). ОПЕРАЦИОННЫЕ СИСТЕМЫ (in Russian). Yekaterinburg. p. 99. Retrieved 2010-03-18. Несколько оснасток могут быть объединены администратором в инструмент (также называется документом), который сохраняется в файле с расширением .msc (Management Saved Console). [Translation: An administrator can gather a few frameworks into an instrument (also known as a document) stored in a file with the suffix .msc (Management Saved Console).]
  2. Shields, Paul; Crump, Ralph; Weiss, Martin (2000). Windows 2000 server: system administration handbook. Global knowledge professional reference. Syngress. pp. 51–52. ISBN 978-1-928994-09-1. Retrieved 2010-03-18. A powerful feature of the MMC [...] enables administrators to create custom tools [...], simply snap in the desired tools, and then the console can be saved as a Management Saved Console (MSC) file [...]
  3. "Article ID: 222330". Microsoft Support. Microsoft. 2004-08-13. Retrieved 2010-02-10. When sending HTML messages with an attached Microsoft Office 2000 document, the message is sent as an Outlook HTML message [...]. The Oledata.mso file contains necessary information to properly render the attachment in the message in its originating program.
  4. "Fileformat.info". Fileformat.info. Retrieved 2012-06-19.
  5. Puppy Linux. "Package management".
  6. http://www.quickreport.co.uk/

External links