Windows
Support Guide

Applies to: Microsoft Windows (All versions)
Home Find file extension (eg.: .doc,.png)

File extension?

A file extension is a suffix to the name of a computer file, which defines and determines easily the file's generic type. In Windows and DOS operating system file extension is a requirement whereas, in some other operating system such as UNIX it is optional. Usually the file extension consists of two, three or four characters following a period.
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Recently updated file extensions

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Find file extension (eg.: .pdf)

.m - Configuration file type

.m_u - Backup file type

.m01 - Miscellaneous file type

.m10 - Miscellaneous file type

.m11 - Audio file type

.m12 - Miscellaneous file type

.m14 - Data file type

.m15 - Miscellaneous file type

.m16 - Miscellaneous file type

.m1a - Audio file type

.M1S - Miscellaneous file type

.m1v - Video file type

.m2a - Miscellaneous file type

.m2f - Miscellaneous file type

.m2l - Miscellaneous file type

.m2p - Plugin file type

.m2s - Miscellaneous file type

.m2t - Video file type

.m2ts - Video file type

.m2v - Video file type

.m3 - Source code and script files

.m3d - Graphic file type

.m3i - Miscellaneous file type

.m3l - Miscellaneous file type

.m3lib - Miscellaneous file type

.m3p - Miscellaneous file type

.m3q - Miscellaneous file type

.m3u - Configuration file type

.m3u8 - Video file type

.m3url - Miscellaneous file type

.m3x - Miscellaneous file type

.m4 - Source code and script files

.m4a - Audio file type

.m4b - Audio file type

.m4e - Video file type

.m4p - Audio file type

.m4r - Audio file type

.m4v - Video file type

.m5m - Miscellaneous file type

.m75 - Miscellaneous file type

.m7p - Miscellaneous file type

.m7x - Miscellaneous file type

.ma - Graphic file type

.ma3 - Graphic file type

.mac - Image file type

.macbin - Miscellaneous file type

.MACRO - Miscellaneous file type

.macros - Miscellaneous file type

.mad - Settings file type

.maf - Miscellaneous file type

.mag - Data file type

.magma - Miscellaneous file type

.magnet - Miscellaneous file type

.mah - Configuration file type

.mahjongtitanssave-m...dll - Game file type

.mai - Data file type

.mak - Source code and script files

.mal - Miscellaneous file type

.mam - Miscellaneous file type

.man - Text file type

.manifest - System file type

.map - Game file type

.mapimail - System file type

.MAPISend - Miscellaneous file type

.maplet - Miscellaneous file type

.maq - Miscellaneous file type

.mar - Archive file type

.mas - Miscellaneous file type

.mass - Miscellaneous file type

.master - Miscellaneous file type

.mat - Miscellaneous file type

.math - Miscellaneous file type

.mau - Miscellaneous file type

.maud - Miscellaneous file type

.mav - Miscellaneous file type

.maw - Miscellaneous file type

.max - Graphic file type

.maxc - Miscellaneous file type

.mb - Graphic file type

.mbam - Miscellaneous file type

.mbb - Text file type

.mbc - Miscellaneous file type

.mbf - Miscellaneous file type

.mbg - Miscellaneous file type

.mbk - Backup file type

.mbl - Data file type

.mblt - Miscellaneous file type

.mbm - Miscellaneous file type

.mbo - Miscellaneous file type

.mbox - Miscellaneous file type

.mbp - Data file type

.mbsa - Miscellaneous file type

.mbx - Email related file type

.mc12mime - Miscellaneous file type

.mcc - Emulator file type

.mcd - Emulator file type

.mce - Miscellaneous file type

.mcf - Audio file type

.mch - Miscellaneous file type

.mci - Miscellaneous file type

.mcl - Data file type

.mcml - Miscellaneous file type

.mcp - Miscellaneous file type

.mcq - Miscellaneous file type

.mcr - Executable file type

.mcs - Miscellaneous file type

.McShredder - Miscellaneous file type

.mct - Miscellaneous file type

.mcw - Text file type

.mcx - Miscellaneous file type

.md - Miscellaneous file type

.md0 - Miscellaneous file type

.md1 - Miscellaneous file type

.md10 - Miscellaneous file type

.md2 - Miscellaneous file type

.md3 - Miscellaneous file type

.md4 - Miscellaneous file type

.md5 - Backup file type

.md6 - Miscellaneous file type

.md7 - Miscellaneous file type

.md8 - Miscellaneous file type

.md9 - Miscellaneous file type

.mda - Data file type

.mda_aq - Miscellaneous file type

.mdb - Database file type

.mdb_aq - Miscellaneous file type

.mdbhtml - Miscellaneous file type

.mdc - Data file type

.mde - Miscellaneous file type

.mde_aq - Miscellaneous file type

.mdf - Disk Image file type

.mdfx - Miscellaneous file type

.mdi - Graphic file type

.mdl - Miscellaneous file type

.mdlkey - Miscellaneous file type

.mdm - Data file type

.mdmp - System file type

.mdn - Miscellaneous file type

.mdoc - Miscellaneous file type

.mdp - Settings file type

.mdr - Miscellaneous file type

.mds - Backup file type

.mdt - Database file type

.mdw - Miscellaneous file type

.mdx - Database file type

.mdz - Database file type

.mdz_aq - Miscellaneous file type

.me - Text file type

.meb - Graphic file type

.mec - Miscellaneous file type

.med - Data file type

.medialib - Miscellaneous file type

.medialib-bak - Miscellaneous file type

.mef - Miscellaneous file type

.mei - Miscellaneous file type

.mel - Miscellaneous file type

.mem - Database file type

.memeo - Miscellaneous file type

.menc - Miscellaneous file type

.menubox - Miscellaneous file type

.meo - Miscellaneous file type

.mep - Miscellaneous file type

.meq - Miscellaneous file type

.mer - Data file type

.merge - Miscellaneous file type

.MergeOptions7 - Miscellaneous file type

.mes - Miscellaneous file type

.mesh - Graphic file type

.met - Game file type

.meta - Miscellaneous file type

.meu - Miscellaneous file type

.mex - Data file type

.mez - Miscellaneous file type

.mf - Data file type

.mfcribbon-ms - Miscellaneous file type

.mfd - Miscellaneous file type

.mfe - Miscellaneous file type

.mff - Audio file type

.mflt - Miscellaneous file type

.mfm - Audio file type

.mfo - Data file type

.mfp - Video file type

.mft - Miscellaneous file type

.mg2 - Miscellaneous file type

.mgc - Miscellaneous file type

.mgd - Miscellaneous file type

.mgf - Graphic file type

.mgi - Miscellaneous file type

.mgmf - Miscellaneous file type

.mgmt - Miscellaneous file type

.mgn - Miscellaneous file type

.mgp - Miscellaneous file type

.mgr - Image file type

.mgu - Miscellaneous file type

.mgv - Video file type

.mgx - Miscellaneous file type

.mhf - Miscellaneous file type

.mht - Email related file type

.mhtml - Internet related file type

.mhv - Miscellaneous file type

.mia - Miscellaneous file type

.mib - Backup file type

.mic - Miscellaneous file type

.mid - Audio file type

.midi - Audio file type

.midicodec - Miscellaneous file type

.mif - Graphic file type

.miff - Image file type

.mig - Miscellaneous file type

.migtable - Miscellaneous file type

.mii - Data file type

.mil - Miscellaneous file type

.milk - Configuration file type

.mim - Source code and script files

.mime - Internet related file type

.minesweepersave-ms - Game file type

.mio - Miscellaneous file type

.mip - Miscellaneous file type

.miro - Miscellaneous file type

.mis - Miscellaneous file type

.mit - Miscellaneous file type

.mix - Graphic file type

.MIZ - Audio file type

.mj2 - Miscellaneous file type

.mja - Miscellaneous file type

.mjd - Miscellaneous file type

.mjf - Miscellaneous file type

.mjp - Miscellaneous file type

.mjpeg - Miscellaneous file type

.mjpg - Miscellaneous file type

.mjr - Miscellaneous file type

.mjs - Miscellaneous file type

.mjv - Miscellaneous file type

.mk - Source code and script files

.mka - Miscellaneous file type

.mke - Source code and script files

.mkg - Miscellaneous file type

.mki - Miscellaneous file type

.mks - Miscellaneous file type

.mkv - Video file type

.mkw - Audio file type

.ml3 - Miscellaneous file type

.ML4 - Miscellaneous file type

.ML5 - Miscellaneous file type

.ML6 - Miscellaneous file type

.ML7 - Miscellaneous file type

.ML8 - Miscellaneous file type

.ML9 - Miscellaneous file type

.MLA - Miscellaneous file type

.mlb - Data file type

.mlc - Data file type

.mld - Miscellaneous file type

.mlg - Miscellaneous file type

.mli - Miscellaneous file type

.mlk - Miscellaneous file type

.mlkreg - Miscellaneous file type

.mln - Miscellaneous file type

.mlp - Miscellaneous file type

.mls - Miscellaneous file type

.mlv - Source code and script files

.mm - Data file type

.mm7l - Miscellaneous file type

.mm7np - Miscellaneous file type

.mmap - Miscellaneous file type

.mmas - Miscellaneous file type

.mmat - Miscellaneous file type

.mmb - Miscellaneous file type

.mmbas - Miscellaneous file type

.mmc - Miscellaneous file type

.mmd - Miscellaneous file type

.mme - Miscellaneous file type

.mmf - Text file type

.MMH - Miscellaneous file type

.mmi - Miscellaneous file type

.mmip - Miscellaneous file type

.MMJB - Miscellaneous file type

.mmjb_mime - Miscellaneous file type

.mml - Miscellaneous file type

.mmm - Video file type

.mmmp - Miscellaneous file type

.mmms - Miscellaneous file type

.mmo - Miscellaneous file type

.mmp - Audio file type

.mmr - Miscellaneous file type

.mms - Miscellaneous file type

.mmt - Miscellaneous file type

.MmTable - Miscellaneous file type

.mmv - Video file type

.mmw - Miscellaneous file type

.mmx - Miscellaneous file type

.mmz - Miscellaneous file type

.mn1 - Miscellaneous file type

.mn2 - Miscellaneous file type

.mn3 - Miscellaneous file type

.mn4 - Miscellaneous file type

.mn5 - Miscellaneous file type

.mn6 - Miscellaneous file type

.mn7 - Miscellaneous file type

.mn8 - Miscellaneous file type

.mn9 - Miscellaneous file type

.mnc - Miscellaneous file type

.mnd - Source code and script files

.mne - Miscellaneous file type

.mne16 - Miscellaneous file type

.mnf - Miscellaneous file type

.mng - Graphic file type

.mnit - Miscellaneous file type

.mnk - Miscellaneous file type

.mnl - Miscellaneous file type

.mnm - Miscellaneous file type

.mno - Text file type

.mnr - Miscellaneous file type

.mns - Settings file type

.mnt - Data file type

.mnu - Configuration file type

.mnx - Data file type

.mny - Data file type

.mo? - Miscellaneous file type

.mo_ - Miscellaneous file type

.mo3 - Audio file type

.mob - System file type

.mobapp - Miscellaneous file type

.mobi - Data file type

.moc - Miscellaneous file type

.mocha - Miscellaneous file type

.mod - Audio file type

.modd - Data file type

.model - Graphic file type

.module - Miscellaneous file type

.mof - Miscellaneous file type

.moff - Video file type

.moh - Miscellaneous file type

.moho - Miscellaneous file type

.moi - Audio file type

.mol - Data file type

.mon - Game file type

.moov - Miscellaneous file type

.mop7 - Miscellaneous file type

.mos - Image file type

.mou - Archive file type

.mount - Miscellaneous file type

.mov - Video file type

.MoviClip - Miscellaneous file type

.movie - Video file type

.moviestudioexecutab...dll - Miscellaneous file type

.mox - Data file type

.mp - Miscellaneous file type

.mp+ - Miscellaneous file type

.mp1 - Audio file type

.mp2 - Audio file type

.mp2s - Miscellaneous file type

.mp2v - Video file type

.mp3 - Audio file type

.mp4 - Video file type

.mp4v - Video file type

.mpa - Audio file type

.mpa2 - Miscellaneous file type

.mpc - Audio file type

.mpcpl - Miscellaneous file type

.mpd - Miscellaneous file type

.mpdp - Miscellaneous file type

.mpe - Video file type

.mpeg - Video file type

.mpeg- - Video file type

.mpeg 1 - Video file type

.mpeg 2 - Video file type

.mpeg 4 - Video file type

.mpeg1 - Video file type

.mpeg-1 - Miscellaneous file type

.mpeg2 - Video file type

.mpeg-2 - Miscellaneous file type

.mpeg4 - Video file type

.mpf - Audio file type

.mpg - Audio file type

.mpg4 - Video file type

.mpga - Audio file type

.mph - Miscellaneous file type

.mpj - Miscellaneous file type

.mpl - Data file type

.mpls - Miscellaneous file type

.mpm - Miscellaneous file type

.MPO - Miscellaneous file type

.mpodcast - Miscellaneous file type

.mpp - Data file type

.mpq - Plugin file type

.mpr - Audio file type

.mps - Miscellaneous file type

.mpt - Image file type

.mpv - Video file type

.mpv2 - Video file type

.mpv4 - Miscellaneous file type

.mpvuhpcp - Miscellaneous file type

.mpw - Miscellaneous file type

.mpx - Temporary Files

.mpy - Audio file type

.mq4 - Data file type

.mqd - Miscellaneous file type

.mqt - Miscellaneous file type

.mqv - Miscellaneous file type

.mrb - Image file type

.mrbak - Miscellaneous file type

.mrc - Miscellaneous file type

.mrf - Miscellaneous file type

.mrimg - Miscellaneous file type

.mrk - Miscellaneous file type

.mrm - Miscellaneous file type

.mrs - Miscellaneous file type

.mrt - Miscellaneous file type

.mrta - Miscellaneous file type

.mrw - Image file type

.mrw ValueType: stri...dll - Miscellaneous file type

.mrx - Miscellaneous file type

.mrz - Miscellaneous file type

.ms - Miscellaneous file type

.ms_ - Archive file type

.msc - System file type

.msc_aq - Miscellaneous file type

.msd - Configuration file type

.msdl - Audio file type

.msdm - System file type

.msdvd - Video file type

.ms-dvr - Miscellaneous file type

.mse - Miscellaneous file type

.msg - Email related file type

.msh - Miscellaneous file type

.msi - Plugin file type

.msi_aq - Miscellaneous file type

.msif - Miscellaneous file type

.MsiLog - Miscellaneous file type

.msk - Graphic file type

.mskin - Miscellaneous file type

.msl - Miscellaneous file type

.msm - Miscellaneous file type

.mso - Audio file type

.msolaprole.1 - Miscellaneous file type

.msp - Image file type

.msp_aq - Miscellaneous file type

.msproducer - Miscellaneous file type

.mspx - Internet related file type

.msqm - Data file type

.msr - Miscellaneous file type

.msrcincident - System file type

.mss - Source code and script files

.msstyles - System file type

.mst - Configuration file type

.mstrial - Miscellaneous file type

.msu - Data file type

.msv - Audio file type

.msw - Text file type

.mswmm - Text file type

.MSWorks7Portfolio - Miscellaneous file type

.msx - Miscellaneous file type

.mt - Miscellaneous file type

.MT2 - Miscellaneous file type

.mtg - Miscellaneous file type

.mth - Miscellaneous file type

.mti - Miscellaneous file type

.mtku - Miscellaneous file type

.mtl - Miscellaneous file type

.mtm - Audio file type

.mtp - Miscellaneous file type

.mts - Video file type

.mtv - Miscellaneous file type

.mtw - Data file type

.mtx - Miscellaneous file type

.mu - Miscellaneous file type

.muc - Miscellaneous file type

.mui - System file type

.mus - Audio file type

.mus10 - Miscellaneous file type

.mv - Miscellaneous file type

.mvb - Document file type

.mvd - Miscellaneous file type

.mvdx - Miscellaneous file type

.mvex - Miscellaneous file type

.mvf - Miscellaneous file type

.mvi - Graphic file type

.mvnx - Miscellaneous file type

.mvo - Data file type

.mvp - Miscellaneous file type

.mvpl - Miscellaneous file type

.mvr - Miscellaneous file type

.mvs - Miscellaneous file type

.mvv - Miscellaneous file type

.mvw - Miscellaneous file type

.mw - Miscellaneous file type

.mwc - Miscellaneous file type

.mwf - Text file type

.mwk - Miscellaneous file type

.mwl - Miscellaneous file type

.mwp - Miscellaneous file type

.mws - Text file type

.mwt - Miscellaneous file type

.mwx - Miscellaneous file type

.mx3 - Miscellaneous file type

.MX4 - Miscellaneous file type

.mxa - Miscellaneous file type

.mxb - Miscellaneous file type

.mxc - Miscellaneous file type

.mxc2 - Audio file type

.mxf - Video file type

.mxi - Miscellaneous file type

.mxl - Miscellaneous file type

.mxm - Miscellaneous file type

.mxml - Miscellaneous file type

.mxp - Plugin file type

.MXS - Miscellaneous file type

.mxt - Miscellaneous file type

.mxv - Miscellaneous file type

.mxx - Miscellaneous file type

.myd - Miscellaneous file type

.mydev - Miscellaneous file type

.mydocs - System file type

.myl - Miscellaneous file type

.myp - Miscellaneous file type

.mypf - Miscellaneous file type

.mysqldev - Miscellaneous file type

.mysterypivegasSaved...dll - Game file type

.mz - Miscellaneous file type

.mzc - Miscellaneous file type

.mzp - Audio file type

.mzt - Miscellaneous file type

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