List of filename extensions (M–R)
This alphabetical list of filename extensions contains standard extensions associated with computer files.
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 | |
| M4V | Advanced Video Coding (See MP4) | |
| M4P | Advanced Video Coding (Protected) | iTunes |
| M4r | iPhone ringtone | iTunes and iOS devices |
| M7P | Multilizer 2007 and 2009 localization project file | Multilizer |
| M8M | 8MAM8 Model File | |
| MAD | Microsoft Access Module | Microsoft Access |
| MAF | Microsoft Access Form | Microsoft Access |
| MAFF | Mozilla Archive Format | Mozilla Firefox (with add-on) |
| MAG | Microsoft Access Diagram | Microsoft Access |
| MAI | VAX | |
| MAK | Makefile | |
| MAK | Project file | VB – VC ++ |
| MAM | Microsoft Access Macro | Microsoft Access |
| MAN | User guide (manual) | |
| MANAGER | Accounting data file | Manager – free accounting software |
| MANIFEST | Manifest file | |
| 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 | |
| MAQ | Microsoft Access Query | Microsoft Access |
| 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) |
| MAR | Microsoft Access Report | Microsoft Access |
| MAS | SmartMaster set | Freelance Graphics |
| MAS | Microsoft Access Stored Procedure | Microsoft Access |
| MASOK | Language File | Ransomware |
| MAT | Data | MATLAB |
| MAT | Microsoft Access Table | Microsoft Access |
| MAV | Microsoft Access View | Microsoft Access |
| MAW | Microsoft Access Data Access Page | 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 |
| 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) | |
| MCFUNCTION | Minecraft Function file | Minecraft 1.12 and onward |
| MCI | MCI command script | Media Control Interface |
| MCL | Multi Edit macro library | Multi Edit |
| MCL | Cartesian manipulator for laser systems | |
| MCMETA | Minecraft asset metadata file | Minecraft |
| 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 |
| MD | Markdown-formatted text file | Markdown |
| MD2 | Quake 2 Model File | id Software |
| MD3 | Quake 3 Model File | id Software |
| MD5 | Doom 3 and Quake 4 Model File | id Software |
| MD5 | MD5 checksum | md5sum, Total Commander |
| MDA | Data | Microsoft Access |
| MDA | Microsoft Access System Database | Microsoft Access |
| MDB | Microsoft Access Database | Microsoft Access |
| MDBHTML | Microsoft Access HTML Document | Microsoft Access |
| MDE | Microsoft Access MDE Database | Microsoft Access |
| MDF | Media Descriptor File, binary files in which the actual disc (CD/DVD) data is stored | Alcohol 120% |
| MDF | Master Data File, a Microsoft SQL Server file type | Microsoft SQL Server |
| MDF | Measurement Data Format, a binary file format for vector measurement data | automotive industry, developed by Robert Bosch GmbH |
| MDI | Document save in high-resolution, created by MSOffice to scan documents (OCR) and turn them into a .DOC | Microsoft Office |
| MDG | Digital Geometry (Programmable CAD) file format, developed by DInsight | Digital Geometric Kernel |
| MDL | Model | 3D Design Plus or Simulink |
| MDL | Spreadsheet | CA-Compete! |
| MDL | GoldSrc Model File (Quake-Based Engine) | Valve |
| MDL | Source Engine Model File | Valve |
| MDL | Quake 1 Model File | id Software |
| MDL | Nintendo GameCube Luigi's Mansion Model | Nintendo |
| MDM | Modem definition file | TELIX |
| MDMP | Mini dumpfile | |
| MDN | Microsoft Access Blank Database Template | Microsoft Access |
| MDR | Microdrive file | ZX Spectrum emulator by g.a.lunter |
| MDS | Midi Session | Sound Imp. |
| MDT | Data table | Microsoft ILink incremental linker |
| MDT | Microsoft Access Add-in Data | Microsoft Access |
| MDW | Microsoft Access Workgroup | Microsoft Access |
| MDX | Multiple index file | dBASE IV |
| MDZ | Text description of music module | Cubic Player – Cross-View |
| MDZ | Microsoft Access Wizard Template | Microsoft Access |
| 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 wikis |
| 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 |
| MHT | 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 |
| MJS | JavaScript Module | |
| 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 |
| MKV | Matroska Multimedia Container | Media Player Classic, Windows Media Player, Matroska Splitter |
| ML3 | Project | Milestones 3.x |
| MLAPP | MATLAB App Designer App | MATLAB |
| MLB | Macro library file | RT-11, Symphony |
| MLI | 3DS Materials Libraries | 3D Studio |
| mllc | Medialon Low Level Communicator driver | Medialon Showmaster Editor |
| MLRAW | Data | Moonlight Creator RAW format 3D object |
| MLT | XML information | Shotcut video editor project file |
| MLV | LabVIEW MathScript | |
| MLX | MATLAB LiveScript | MATLAB |
| MM | Text file | MultiMate Advantage II, FreeMind mind map file (XML) |
| MM | Source code | Objective-C++ |
| MMF | Mail message file | Microsoft Mail |
| MMF | Synthetic music mobile application format | cell phones, MidRadio Player, FFmpeg |
| MMM | Multimedia movie file, RIFF RMMP format | MacroMind Director 3.x |
| MMO | Memo writer file | RapidFile |
| MMP | Output video format from Bravado board | |
| MMPZ | LMMS Compressed Project File | LMMS |
| 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) | Microsoft DOS |
| MNX | Compiled menu file | AutoCAD |
| MNX | Main (DBF) menu description file | FoxPro |
| MNY | Account book | Microsoft Money |
| MO | Language file | Sundry |
| MO? | Packed mail | FTN software |
| MOB | Device definition file | PEN Windows |
| MOBI | eBook | Mobipocket, Kindle |
| 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 |
| MODULES | Module | GTK+ |
| 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 |
| MP3 | 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 | |
| MPD | LDraw file (multi-part DAT file) | LDraw |
| MPEG | 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 |
| MPQ | 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 |
| MQ4 | MetaQuotes Language 4 (MQL4) source code file | MetaTrader 4 |
| MQ5 | MetaQuotes Language 5 (MQL5) source code file | MetaTrader 5 |
| MQH | MetaQuotes Language (MQL4 or MQL5) header file | MetaTrader 4, MetaTrader 5 |
| 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 |
| MSF | Multiple sequence file (Pileup format)[3] | |
| 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[4] | Microsoft Outlook |
| MSP | Bitmap graphics file | Microsoft Paint |
| MSP | Windows Installer Patch | Microsoft Windows |
| 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 |
| MTS | MPEG 2 Transport Stream | Various media playback devices / software |
| MTV | MTV Ray Tracer graphic file | |
| MTW | Datafile | Minitab |
| MTX | MTX-MRX Editor DSP project | Yamaha MTX-MRX Editor |
| MU | Quattro pro for DOS Menu definition file | Quattro Pro |
| MUI | Multilingual User Interface | |
| 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[5] |
| 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 |
| MYD | a MyISAM data file in MySQL | MyISAM, MySQL |
| MYI | a MyISAM index file in MySQL | MyISAM, MySQL |
| 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 | |
| NASL | Nessus Attack Scripting Language | Tenable Network Security - Nessus |
| 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 |
| NBT | Minecraft Named Binary Tag file | Minecraft Named Binary Tag |
| NBU | Nokia Backup | Nokia Suite |
| NC | Binary Data | netCDF software package |
| NC | Instructions for NC (Numerical Control) machine | CAMS |
| NC | Name code program | namec-git/namec software package |
| 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 |
| ND | NetConnect data file. Contains information on multi-user access to the company file. | Intuit QuickBooks |
| 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 |
| NEIS | Korean Student Record Document | 학교생활기록부 작성 프로그램(Student Record Writing Program) |
| 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 | |
| NEX | Nexia DSP Project | Biamp Nexia |
| 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 |
| NGC | G-Code file | Inkscape G-Code tools extension |
| NGO | NG linker object file | NGML |
| NGS | NG compiler source file | NGC |
| NIF | netimmerse/gamebyro file | |
| NIL | NIL | Icon Hear-It |
| NIM | Nim source code file | Nim |
| 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 |
| NORM | Normal file (Photo of screen showing Excel file - embedded in Word file) | https://xkcd.com/2116/ |
| NOT | Notation | |
| NOT | Yard Notes File | FYM |
| NOTE | Notability Note File | Notability |
| NP | Project schedule (Nokia Planner) | Nokia Planner |
| NPI | Source for DGEN.EXE interpreter | dBASE Application Generator |
| NPJ | Nile Project | Game Mission Editor |
| NPR | Nuendo Project File | Steinberg Nuendo |
| NRG | Nero Disc Image File | Nero Express / Burning ROM |
| NRW | Nikon Coolpix RAW image | Nikon |
| NS1 | NetStumbler file | NetStumbler |
| 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 |
| NUG | Video Nugget | CBT Nuggets |
| NUMBERS | Numbers spreadsheet file | Numbers |
| NV | NewViews DOS accounting database | QW Page NewViews |
| NV2 | NewViews accounting database | QW Page NewViews |
| NWC | Note Worthy document | Note Worthy |
| 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 |
| OAR | OAR file archive format | |
| 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 | Octalizer |
| OCX | New Custom Control's format in VB 4.0 | Visual Basic |
| OCX | OLE custom control | |
| ODB | OpenDocument database | LibreOffice Base |
| ODC | Microsoft Office Data Connection | |
| ODF | OpenDocument formula | LibreOffice Math |
| ODG | OpenDocument drawing | LibreOffice Draw |
| ODIF | Open Document Interchange Format | |
| ODL | Object Description Language | |
| ODL | Type library source | Visual C++ |
| ODM | OpenDocument master document | LibreOffice Writer |
| ODP | OpenDocument presentation | LibreOffice Impress |
| ODS | OpenDocument spreadsheet | LibreOffice Calc |
| ODT | OpenDocument text document | LibreOffice 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 | 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 |
| OLK14CONTACT | olk14_contact | Microsoft Outlook |
| OLM | Outlook for Mac Data File | Microsoft Outlook for macOS |
| OLSR | Configuration file | olsrd |
| OMA | Audio file | Labelgate CD 2, MAGIQLIP2 |
| OMF | Open Media Framework | Avid Media Composer |
| OMG | Audio file | Sony compressed audio file (ATRAC3) |
| ONE | OneNote Section | Microsoft OneNote |
| ONEPKG | OneNote Single File Package | Microsoft OneNote |
| ONETOC | OneNote 2003 Table Of Contents | Microsoft OneNote |
| ONETOC2 | OneNote Table Of Contents | Microsoft OneNote |
| OOF | Data | Outrage 3D Object Format (Descent) |
| OOG | Data | WEBOOGL 3D object |
| OOM | Swap file | Shroom |
| OPF | Open Packaging Format File (often eBook metatdata) | calibre and other ebook readers |
| 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 |
| OPUS | Ogg/Opus audio file | mpv, mplayer, many others (official file format). |
| OPW | Organization chart | Org Plus for Windows |
| OPX | Inactive options | Exact |
| OR2 | Calendar file | Lotus Organizer |
| OR3 | Calendar file | Lotus Organizer |
| OR4 | Calendar file | Lotus Organizer |
| OR5 | Calendar file | Lotus Organizer |
| OR6 | Calendar file | Lotus Organizer |
| ORA | Parameter file | Oracle |
| ORC | Orchestra MIDI file | CSound |
| ORG | Emacs Org mode | Emacs Org mode major mode |
| ORG | Calendar file | Lotus Organizer |
| ORG | Older Origin Project | Origin versions 4 or earlier |
| OSB | osu! storyboard file | osu! |
| OSC | OpenStreetMap Changeset | OpenStreetMap |
| OSC | osu!stream combined stream file | osu!stream |
| OSF2 | Free osu!stream song file | osu!stream |
| OSK | osu! skin archive | osu! |
| OSM | OpenStreetMap data | OpenStreetMap |
| OSM | OpenStreetMap note | OpenStreetMap |
| OSR | osu! replay file | osu! |
| OST | Offline Storage Table | Microsoft e-mail software: Outlook Express, Microsoft Outlook |
| OSU | osu! beatmap file | osu! |
| OSZ | osu! beatmap archive | osu! |
| OSZ2 | Paid osu!stream song file | osu!stream |
| OTG | OpenDocument drawing template | LibreOffice 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 | LibreOffice |
| 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 | LibreOffice Impress |
| OTS | OpenDocument spreadsheet template | LibreOffice Math |
| OTT | OpenDocument text document template | LibreOffice Writer |
| OTX | Text file | Olivetti Olitext Plus |
| OUT | Output file | |
| OUT | Design II for Windows Output file | |
| OVA | Open Virtualization Format package for packaging and distributing virtual appliances | |
| 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 |
| OVF | Open Virtualization Format descriptor file, an XML file which describes the virtual machine packed inside an OVF package | |
| OVL | Overlay file (part of program to be loaded when needed) | |
| OWL | Web ontology language (OWL) file | Protégé and other ontology editors |
| OXT | OpenOffice.org extension | OpenOffice.org / LibreOffice |
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" |
| P12 | Another variant of the PFX extension | |
| 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 | Pack200 Packed Jar File | |
| 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 |
| PAK | Archive | Pak |
| PAL | Paint Shop Pro color palette (JASC format) | PaintShop Pro, XnView |
| PAL | Palette file (RIFF format) | Microsoft Draw - Win. Paintbrush - XnView- 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 |
| 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 |
| PBO | A file type used by Bohemia Interactive | Arma 3, PBO Manager |
| PBT | ProBoards Theme [6] | ProBoards remotely hosted message boards |
| 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 Command Language |
| PCL | Old Pencil Animation File PCL | Pencil2D |
| PCLX | Pencil Animation File PCLX | Pencil2D |
| 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 |
| PCX | PC paintbrush bitmap format | QPeg - Display - ZSoft - PC Paintbrush, XnView |
| 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 |
| PDE | source code file | Processing programming language |
| Adobe's Portable Document Format | Adobe Acrobat Reader | |
| Graphics file (ED-SCAN 24bit format) | ||
| Package Definition File | ||
| PCAD Database Interchange Format | Pdifin.exe - Pdifout.exe | |
| Print device information Netware | ||
| Printer Descriptor File (AKA 'printer driver') | WordStar 5-6 | |
| PDG | Print Shop Deluxe data file | |
| PDI | Portable Database Image | |
| PDI | Protected Digital Identity | SertintyONE |
| PDL | Project Description Language file | Borland C++ 4.5 |
| PDM | Program | Deskmate |
| PDM | PowerDesigner's physical data model (relational model) file format | PowerDesigner |
| PDM | 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 |
| PEM | A text-based certificate file defined in RFC 1421 through RFC 1424[7] | Applications that need to use cryptographic certificates, including web-servers |
| 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[8] | Puppy Linux |
| PEX | Proboard EXecutable file (Executed from PB) | Proboard |
| PFA | PostScript Font File | |
| PFA | Type 3 font file (unhinted PostScript font) | |
| PFAM | PFAM format[9] | |
| PFB | Adobe Acrobat document | Adobe Acrobat Reader |
| PFB | PostScript font | Adobe Type Manager (ATM) |
| PFC | (Personal Filing Cabinet) contains e-mail, preferences and other personal information | AOL |
| PFC | Text file | First Choice |
| PFK | Programmable function keys | XTreePro |
| PFM | PostScript Type 1 font metric file | Microsoft Windows, Adobe Acrobat Reader |
| PFM | Windows Type 1 font metric file | |
| PGN | Portable Game Notation -Text specification for Chess game | Most chess playing computer applications |
| PFS | Database (PFS:FILE) - text file (PFS:Write) | PFS |
| PFT | Printer font | ChiWriter |
| PFX | An encrypted certificate file[7] | Applications that need to use cryptographic certificates, including web-servers |
| 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 | |
| PHY | Phylip format[9] | |
| 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 |
| PIR | PIR format[9] | |
| 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 | Python object serialization |
| PK2 | Quake 2 data file | id Software |
| PK3 | Quake 3 data file | id Software |
| PK4 | Doom 3 and Quake 4 data file | id Software |
| PKCS12 | Another variant of the PFX extension | |
| PKA | Archive | PKARC |
| PKG | Installer script | Next, Mac OS X, Sony PS3 |
| PKG | P-CAD database | P-CAD |
| PKPASS | Wallet pass | Apple Wallet |
| 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 |
| PL | IRAF pixel list | IRAF astronomical data format |
| 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 | |
| PLAGUEINC | Plague Inc. Custom Scenario File [10] | Plague Inc. |
| 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 |
| PLUGIN | Plug-in | macOS |
| PLY | Data | PopMail |
| PLY | Presentation screen | Harvard Spotlight |
| PLY | ZipPack | |
| PLY | 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 |
| PMA | PMarc Archive | |
| 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 | |
| PNCL | Pinnacle file | Pinnacle by Optys Tech Corporation |
| 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 |
| POD | UNIX perldoc File ("Plain Old Documentation") | pod2man, pod2html |
| 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 |
| POM | Build manager configuration file | Apache Maven POM file |
| 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 |
| 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 |
| 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 |
| PRP | Plasma Registry Page | Plasma (engine) |
| 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 | PyMOL session[11] | |
| PSE | Truncated form of PSEG (see below) | |
| 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 |
| PSM1 | Windows Powershell module[12] | Windows Powershell |
| PSMODEL | PowerSHAPE Model | PowerSHAPE |
| PSN | Presentation file for Sound Script | Win |
| PSP | image file with layers | Paint Shop Pro (all versions) |
| PSPPALETTE | Paint Shop Pro color palette (JASC format) | Paint Shop Pro 8.0 and newer[13] |
| 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 |
| PS1 | Windows Powershell script[12] | Windows PowerShell |
| 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 |
| PTP | DockLight Scripting Project | DockLight Scripting |
| PTPED | PedFast Technologies Pedigree Database[14] | The Breeder's Standard, iPed, The Cattery's Standard, Equestrian's Standard |
| 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 |
| PUF | Package Update File (Device firmware package, in ZIP format) | Crestron Toolbox |
| PUP | Pileup format[3] | |
| PUT | Archive | PUT |
| PUT | Graphics format | WScan |
| PUZ | Microsoft Publisher "Packed and Go" archive | Microsoft Publisher, many file archivers with CAB support |
| 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 |
| PXIPROJECT | PixInsight Project Bundle | PixInsight |
| 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 |
| QFP | QUICKfind Server Plug-in | IDM QUICKfind Server |
| 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 |
| QRMX | Quick Risk Matrix data file | Quick Risk Matrix by Riskfiniti |
| QRP | Database report file | QuickReport |
| 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 | Ratfor |
| R | Script file | R |
| R00, R01, ... | Part of a multi-file RAR archive | RAR |
| 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 | RAR |
| RAD | 2-op FM music | Reality AdLib Tracker |
| RAD | Radiance | Radiance |
| RAL | Remote Access Language file | Remote Access |
| RAM | Ramfile | RealAudio |
| RAP | Flowchart | RAPTOR |
| RAR | Archive | RAR |
| RAS | 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 | Ruby Script |
| 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 |
| REPLIT | repl.it configuration file [16] | repl.it |
| 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 | |
| RFA | 3D BIM Model Family Element | Autodesk Revit |
| 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 |
| RIN | Sound recording participants and information (Recording Information Notification) | Soundways RIN-M |
| 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 |
| RMVB | RealMedia Variable Bitrate | RealPlayer |
| RN | XPL program for Nota Bene users | |
| RN4 | Random Numeration 4 Encryption Program File | |
| 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 |
| ROSS | Simple function routine | Ross shell |
| 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 |
| RSDF | RSD Link Container | JDownloader |
| 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 | Makeself shell self-extracting archive | shell |
| 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 | |
| RVT | 3D BIM Model file | Autodesk Revit |
| 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) |
gollark: ++tel dial HindiPatriotPeek
gollark: Yes. Anyway.
gollark: ++tel dial DutyMineralHis
gollark: Bees you completely.
gollark: There is no escape.
See also
References
- 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).] -
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 [...]
- Accelrys (1998-10-02). "QUANTA: Protein Design. 3. Reading and Writing Sequence Data Files". Université de Montréal. Retrieved 2020-03-27.
-
"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.
- "Fileformat.info". Fileformat.info. Retrieved 2012-06-19.
- Camara, Tim (24 April 2013). "ProBoards Theme Library". ProBoards Support. ProBoards, Inc. Retrieved 21 August 2018.
From the library you can either download the .PBT file
- https://serverfault.com/questions/9708/what-is-a-pem-file-and-how-does-it-differ-from-other-openssl-generated-key-file#9717
- Puppy Linux. "Package management".
- "Alignment Fileformats". 22 May 2019. Retrieved 22 May 2019.
- https://fileinfo.com/extension/plagueinc
- https://pymolwiki.org/index.php/Load
- juanpablojofre. "Windows PowerShell Glossary". Retrieved 2017-09-03.
- ".psppalette Extension - List of programs that can open .psppalette files". Retrieved 2017-10-13.
- http://www.pedfast.com
- http://www.quickreport.co.uk/
- https://docs.repl.it/repls/dot-replit
External links
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