List of filename extensions (M–R)

This alphabetical list of filename extensions contains extensions used by multiple notable applications or services.

M

Ext.DescriptionUsed by
M[1] Mathematica Package File Mathematica
M MATLAB M-File MATLAB
M Mercury Source File Mercury
M[2] Source code Objective-C
MCF[3] Multimedia Container Format (predecessor of Matroska)
MD[4] Markdown-formatted text file Markdown
MDF[5] Master Data File, a Microsoft SQL Server file type Microsoft SQL Server
MDF Measurement Data Format, a binary file format for vector measurement data[6] 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
MDS Midi Session Sound Imp.
MEX[7] MEX file (executable command) Matlab
MGF[8] Materials and Geometry Format
MID Standard MIDI file music synthetizers, Winamp
MM[2] Source code Objective-C++
MMPZ LMMS Compressed Project File LMMS
MNT Surface metrology or image analysis document MountainsMap
MOBI[9] eBook Mobipocket, Kindle
MOD AMPL model file AMPL
MOD Modula language source
MOD MODULA-2 source code file Clarion Modula-2
MODULES Module GTK+
MOL MDL Molfile RasMol
MOL2[10][11] Tripos Sybyl MOL2 Format SYBYL, RasMol
MOP MOPAC input file MOPAC, RasMol
MOV[12] Animation format (Mac) QuickTime, AutoCAD AutoFlix
MP2[13][14] Mpeg audio file Winamp, xing
MP3[15][16] MPEG audio stream, layer 3 AWAVE, CoolEdit(+PlugIn), Winamp, many others
MP4[17] multimedia container format, MPEG 4 Part 14 Winamp
MPA MPEG audio stream, layer 1,2,3 AWAVE
MPC Musepack audio
MPD LDraw file (multi-part DAT file) LDraw
MPEG[18][19][20] multimedia containter format, video, audio MPEG Player, Winamp
MPG see MPEG
MSC management saved console[21] Microsoft; Microsoft MMC[22]
MSDL[23] Manchester Scene Description Language
MSF[24][25] Multiple sequence file (Pileup format)
MSI Windows Installer Package Windows operating systems
MSO Microsoft Outlook metadata for a Microsoft Word 2000 email attachment[26] Microsoft Outlook
MXF[27][28] Material exchange format (RFC 4539, SMPTE 377M)
MYD a MyISAM data file in MySQL MyISAM, MySQL
MYI a MyISAM index file in MySQL MyISAM, MySQL

N

Ext.DescriptionUsed by
NB Wolfram Mathematica Notebook (see Wolfram Language) Mathematica
NC Binary Data netCDF software package
NC Instructions for NC (Numerical Control) machine CAMS
NC Name code program namec-git/namec software package
NCD NC Drill File (Excellon Format, printed circuit board hole definitions) Most PCB layout software
NCZ Netcad Drawing File (Netcad Çizim Dosyası) Netcad CAD & GIS Software
NEF[29] Nikon RAW image format Nikon cameras
NEIS Korean Student Record Document 학교생활기록부 작성 프로그램(Student Record Writing Program)
NEO Raster graphics file Atari Neochrome
NEU Pro/Engineer neutral file format PTC Pro/Engineer
NIM Nim source code file Nim
nmf Node Map File Used by SpicyNodes
NPR Nuendo Project File Steinberg Nuendo
NRW[30] Nikon Coolpix RAW image Nikon
NS1 NetStumbler file NetStumbler
NSA media Nullsoft Streaming Audio
NSV media Nullsoft Streaming Video
NUMBERS Numbers spreadsheet file Numbers


O

Ext.DescriptionUsed by
O Object file UNIX - Atari - GCC
OBJ Compiled machine language code
OBJ Object code Intel Relocatable Object Module
OBJ Wavefront Object
OBS Script ObjectScript
OCX OLE custom control
OPUS Ogg/Opus audio file mpv, mplayer, many others (official file format).
ORG Emacs Org mode Emacs Org mode major mode
ORG Older Origin Project Origin versions 4 or earlier
OSC OpenStreetMap Changeset OpenStreetMap
OSM OpenStreetMap data OpenStreetMap
OSM OpenStreetMap note OpenStreetMap
OST Offline Storage Table Microsoft e-mail software: Outlook Express, Microsoft Outlook
OTB Over-the-air bitmap graphics
OTL The Vim Outliner A vim plugin
OV2 Overlay file (part of program to be loaded when needed) TomTom Point of Interest
OWL[31][32] Web ontology language (OWL) file Protégé and other ontology editors
OXT OpenOffice.org extension OpenOffice.org / LibreOffice

P

Ext.DescriptionUsed by
P Database PROGRESS source code PROGRESS
P PASCAL source code file
P Parser source code file
P10 Certificate Request
P12 Personal Information Exchange "Crypto Shell Extensions"
PACK[33] Pack200 Packed Jar File
PAGES Pages document file Pages
PAK Archive Pak
PAL Paint Shop Pro color palette (JASC format) PaintShop Pro, XnView
PAM PAM Portable Arbitrary Map graphics format Netpbm
PAR Parity Archive [34]
PAR2 Parity Archive v2 [35]
PAS Pascal language source Borland Pascal
PBLIB Power Library PowerBASIC
PBO A file type used by Bohemia Interactive Arma 3, PBO Manager
PCL[36][37] HP-PCL graphics data file HP Printer Command Language
PCS PCSurvey file PCSurvey by Softart - Land Surveying Software
PDB[38] debugging data Microsoft Windows
PDB[39] Molecule (protein data bank)
PDE source code file Processing programming language
PDF Adobe's Portable Document Format Adobe Acrobat Reader
PDI Portable Database Image
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 Planetary Data System Format
PEM A text-based certificate file defined in RFC 1421 through RFC 1424[40] Applications that need to use cryptographic certificates, including web-servers
pet package[41] Puppy Linux
PFA PostScript Font File
PFA Type 3 font file (unhinted PostScript font)
PFAM PFAM format[42]
PFB PostScript font Adobe Type Manager (ATM)
PFC (Personal Filing Cabinet) contains e-mail, preferences and other personal information AOL
PFM[43] PostScript Type 1 font metric file Microsoft Windows, Adobe Acrobat Reader
PFM[43] Windows Type 1 font metric file
PGN[44] Portable Game Notation -Text specification for Chess game Most chess playing computer applications
PFX An encrypted certificate file[40] Applications that need to use cryptographic certificates, including web-servers
PGL HP Plotter vector graphics format
PHP PHP file
PHP3 PHP 3 file
PHP4 PHP 4 file
PHY Phylip format[42]
PHF Database File Nuverb Systems Inc: Donarius
PHR Phrases LocoScript
PI2 Portrait Innovations High Resolution Encrypted Image file Portrait Innovations Studio2 (proprietary)
PIE GlovePIE script file GlovePIE
PIR PIR format[42]
PIT Compressed Mac file archive created by PACKIT unpackit.zoo
PIT Partition Information Table for Samsung's smartphone with Android Odin3
PKL Pickle file Python object serialization
PKA Archive PKARC
PL Perl source code file
PL Prolog source code file
PL IRAF pixel list IRAF astronomical data format
PLI PL/I source file PL/I compilers
PLR Terraria player/character file Terraria
PM[45] Perl module
PMA PMarc Archive
POM[46] Build manager configuration file Apache Maven POM file
PPTX MS Office Open-XML Presentation Microsoft PowerPoint[47]
PPSX MS Office Open-XML Auto-Play Presentation Microsoft PowerPoint
PRJ Mkd (Unix command) Mkd project file to extract documentation
PROTO[48] Message specification Google Protocol Buffers
PRP Plasma Registry Page Plasma (engine)
PSD[49] Photoshop bitmap file Photoshop document
PSM1[50] Windows Powershell module Windows Powershell
PSPPALETTE[51] Paint Shop Pro color palette (JASC format) Paint Shop Pro 8.0 and newer
PST Archive File Microsoft Outlook
PS1 Windows Powershell script[50] Windows PowerShell
PTF PlayStation Portable Theme file PSP Theme settings menu
PTF Pro Tools Session File Digidesign Pro Tools
PUB Public key ring file Pretty Good Privacy RSA System
PUF Package Update File (Device firmware package, in ZIP format) Crestron Toolbox
PUP[24][25] Pileup format
PY Python script file Python (programming language)

Q

Ext.DescriptionUsed by
QFX Quicken-specific implementation of the OFX specification Intuit Quicken
QIF[52] Quicken Interchange Format Intuit Quicken
QLC[43] ATM Type 1 fonts script Adobe Type Manager
QT QuickTime movie (animation)
QTVR QuickTime VR Movie

R

Ext.DescriptionUsed 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
R8P PCL 4 bitmap font file Intellifont
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
RB Ruby Script file
RBXM Roblox "model" Roblox
RBXL Roblox "level" Roblox
RC Configuration file emacs, Vim (text editor), Bash (Unix shell)
RC[53] Resource Compiler script file Microsoft C/C++, Borland C++
RDP[54] RDP connection Remote Desktop connection
RDS[55] Data file R
RES[56] Compiled resource Microsoft C/C++, Borland C++
RM[57] RealMedia RealPlayer
RMVB[58] RealMedia Variable Bitrate RealPlayer
RPM Red Hat Package Manager Red Hat Linux
RS Rust language source
RST reStructuredText Docutils
RTF[59][60][61] Rich Text Format text file (help file script) many - Microsoft Word
RUN AMPL script file AMPL
RUN Makeself shell self-extracting archive shell

See also

References

  1. "What Is a Mathematica Package?". Wolfram. Retrieved 2020-09-15.
  2. Dalrymple, Mark; Knaster, Scott. Learn Objective-C on the Mac. p. 9. ISBN 9781430241881. The .m extension originally stood for "messages" when Objective-C was first introduced, referring to a central feature of Objective-C
  3. "MCF specification, introduction". free.fr. Retrieved 2020-09-18.
  4. "RFC 7763 - The text/markdown Media Type".
  5. "Database Files and Filegroups". microsoft.com. 2020-05-29. Retrieved 2020-08-28.
  6. "ASAM MDF". Retrieved 2020-09-18.
  7. "Mex-Files". octave.org. Retrieved 2020-09-18.
  8. "The Materials and Geometry Format". May 1995. Retrieved 2020-09-18.
  9. "Mobipocket File Format". loc.gov. 2019-02-20. Retrieved 2020-09-18.
  10. "Tripos Mol2 File Format" (PDF). ccnu.edu.cn. Retrieved 2020-09-21.
  11. "SYBYL MOL2 Format". yale.edu. 1998. Retrieved 2020-09-21.
  12. "Introduction to QuickTime File Format Specification". apple.com. 2016. Retrieved 2020-09-21.
  13. "The audio/mpeg Media Type - RFC 3003". IETF. November 2000. Retrieved 2009-12-07.
  14. "MIME Type Registration of RTP Payload Formats – RFC 3555". IETF. July 2003. Retrieved 2009-12-07.
  15. "Happy Birthday MP3!". Fraunhofer IIS. 12 July 2005. Retrieved 18 July 2010.
  16. "The audio/mpeg Media Type — RFC 3003". IETF. November 2000. Retrieved 7 December 2009.
  17. 3GPP2 (18 May 2007). "3GPP2 C.S0050-B Version 1.0, 3GPP2 File Formats for Multimedia Services" (PDF). 3GPP2: 67, 68. Archived from the original (PDF) on 7 October 2009. Retrieved 2009-06-12. Cite journal requires |journal= (help)
  18. ISO/IEC 13818-1:2000 - Information technology -- Generic coding of moving pictures and associated audio information: Systems (PDF), neuron2.net, 2000-12-01, archived from the original (PDF) on 2010-06-11
  19. ITU-T. "H.222.0 : Information technology - Generic coding of moving pictures and associated audio information: Systems". Retrieved 2010-06-03.
  20. ITU-T (May 2006). "H.222.0 Summary". Archived from the original on 2011-05-19. Retrieved 2010-06-03.
  21. 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).]
  22. 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 [...]
  23. "MSDL - Manchester Scene Description Language". Retrieved 2020-09-18.
  24. Accelrys (1998-10-02). "QUANTA: Protein Design. 3. Reading and Writing Sequence Data Files". Université de Montréal. Retrieved 2020-03-27.
  25. Li H.; Handsaker B.; Wysoker A.; Fennell T.; Ruan J.; Homer N.; Marth G.; Abecasis G.; Durbin R; 1000 Genome Project Data Processing Subgroup (2009) (2009). "The Sequence alignment/map (SAM) format and SAMtools". Bioinformatics. 25: 2078–2079. doi:10.1093/bioinformatics/btp352.
  26. "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.
  27. "ST 372:2017 - SMPTE Standard - Dual Link 1.5 Gb/s Digital Interface for 1920 × 1080 and 2048 × 1080 Picture Formats". ieee.org. Institute of Electrical and Electronics Engineers. 2017-11-01. Retrieved 2020-09-18.
  28. "RFC 4539 - Media Type Registration for the Society of Motion Picture and Television Engineers (SMPTE) Material Exchange Format (MXF)".
  29. "Nikon Electronic Format (NEF)". nikonusa.com. Retrieved 2020-09-19.
  30. "What is an NRW (RAW) file?". nikonimgsupport.com. 2019-04-10. Retrieved 2020-09-19.
  31. A. Swartz (September 2004). "application/rdf+xml Media Type Registration (RFC3870)". IETF. p. 2. Archived from the original on 2013-09-17. Retrieved 15 October 2013.
  32. "OWL Web Ontology Language Reference". w3.org. 2004-02-10.
  33. "pack200 - JAR Packing tool". oracle.com. Retrieved 2020-09-25.
  34. "Parity Volume Set Specification 1.0". 2001-10-14. Retrieved 2020-08-28.
  35. "Parity Volume Set Specification 2.0". 2003-05-11. Retrieved 2020-08-28.
  36. "PCL 5e Technical Reference Manual Part 1" (PDF). Hewlett-Packard. Retrieved 2017-06-22.
  37. "PCL 5e Technical Reference Manual Part 2" (PDF). Hewlett-Packard. Retrieved 2017-06-22.
  38. "What's inside a PDB file?". microsoft.com. 2016-02-08. Retrieved 2020-09-18.
  39. "File Format Description". wwpdb.org. Retrieved 2020-09-18.
  40. https://serverfault.com/questions/9708/what-is-a-pem-file-and-how-does-it-differ-from-other-openssl-generated-key-file#9717
  41. Puppy Linux. "Package management".
  42. "Alignment Fileformats". 22 May 2019. Retrieved 22 May 2019.
  43. "Adobe Type 1 Font Format" (PDF). adobe.com. Retrieved 2020-09-21.
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  45. "Perl Module Mechanics". std.com. 2007-03-02. Retrieved 2020-09-21.
  46. "POM Reference". apache.org. Retrieved 2020-09-21.
  47. "PowerPoint (.pptx) Extensions to the Office Open XML File Format". 2020-02-26. Retrieved 2020-08-28.
  48. "Protocol Buffers Version 3 Language Specification". developers.google.com. Retrieved 2020-09-21.
  49. "The Photoshop File Format". adobe.com. Retrieved 2020-09-21.
  50. juanpablojofre. "Windows PowerShell Glossary". Retrieved 2017-09-03.
  51. ".psppalette Extension - List of programs that can open .psppalette files". Retrieved 2017-10-13.
  52. "Quicken Interchange Format (QIF) files". intuit.com. Archived from the original on 2010-02-22. Retrieved 2020-09-22.
  53. "About Resource Files". microsoft.com. 2018-05-13. Retrieved 2020-09-19.
  54. "Supported Remote Desktop RDP file settings". microsoft.com. 2020-09-14. Retrieved 2020-09-19.
  55. "Serialization Interface For Single Objects". Retrieved 2020-09-21.
  56. "Resource File Formats". microsoft.com. 2018-05-31. Retrieved 2020-09-19.
  57. "RealMedia File Format". ietf.org. 1998-03-13. Retrieved 2020-09-22.
  58. "RealVideo 9 Technical Overview" (PDF). 2003. Retrieved 2020-09-22.
  59. Microsoft Corporation (May 1999). "Rich Text Format (RTF) Specification, version 1.6". Retrieved 2010-03-13.
  60. Microsoft Corporation (2004-04-20). "Word 2003: Rich Text Format (RTF) Specification, version 1.8". Retrieved 2010-03-13.
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