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)

.r - Miscellaneous file type

.r00 - Archive file type

.r01 - Archive file type

.r02 - Archive file type

.r03 - Archive file type

.r04 - Archive file type

.r05 - Archive file type

.r06 - Archive file type

.r07 - Archive file type

.r08 - Archive file type

.r09 - Archive file type

.r10 - Archive file type

.r11 - Archive file type

.r12 - Archive file type

.r13 - Archive file type

.r14 - Archive file type

.r15 - Archive file type

.r16 - Archive file type

.r17 - Archive file type

.r18 - Archive file type

.r19 - Archive file type

.r20 - Archive file type

.r21 - Archive file type

.r22 - Archive file type

.r23 - Archive file type

.r24 - Archive file type

.r25 - Archive file type

.r26 - Archive file type

.r27 - Archive file type

.r28 - Archive file type

.r29 - Archive file type

.r2d - Data file type

.r2lang - Miscellaneous file type

.r2lic - Miscellaneous file type

.r2skin - Miscellaneous file type

.r2skin-addon - Miscellaneous file type

.r30 - Archive file type

.r31 - Miscellaneous file type

.r32 - Miscellaneous file type

.r33 - Miscellaneous file type

.r34 - Archive file type

.r35 - Miscellaneous file type

.r36 - Archive file type

.r37 - Archive file type

.r38 - Archive file type

.r39 - Miscellaneous file type

.r3d - Miscellaneous file type

.r3i - Miscellaneous file type

.R3L - Miscellaneous file type

.r3t - Miscellaneous file type

.r40 - Miscellaneous file type

.r41 - Archive file type

.r42 - Miscellaneous file type

.r43 - Miscellaneous file type

.r44 - Archive file type

.r45 - Miscellaneous file type

.r46 - Miscellaneous file type

.r47 - Miscellaneous file type

.r48 - Miscellaneous file type

.r49 - Miscellaneous file type

.R4L - Miscellaneous file type

.r50 - Miscellaneous file type

.r51 - Miscellaneous file type

.r52 - Miscellaneous file type

.r53 - Miscellaneous file type

.r54 - Miscellaneous file type

.r55 - Miscellaneous file type

.r56 - Miscellaneous file type

.r57 - Miscellaneous file type

.r58 - Miscellaneous file type

.r59 - Miscellaneous file type

.r60 - Miscellaneous file type

.r61 - Miscellaneous file type

.r62 - Miscellaneous file type

.r63 - Miscellaneous file type

.r64 - Miscellaneous file type

.r65 - Miscellaneous file type

.r66 - Miscellaneous file type

.r67 - Archive file type

.r68 - Miscellaneous file type

.r69 - Miscellaneous file type

.r70 - Miscellaneous file type

.r71 - Miscellaneous file type

.r72 - Miscellaneous file type

.r73 - Miscellaneous file type

.r74 - Miscellaneous file type

.r75 - Miscellaneous file type

.r76 - Archive file type

.r77 - Miscellaneous file type

.r78 - Miscellaneous file type

.r79 - Miscellaneous file type

.r8 - Graphic file type

.r80 - Miscellaneous file type

.r81 - Miscellaneous file type

.r82 - Miscellaneous file type

.r83 - Miscellaneous file type

.r84 - Miscellaneous file type

.r85 - Miscellaneous file type

.r86 - Miscellaneous file type

.r87 - Miscellaneous file type

.r88 - Miscellaneous file type

.r89 - Miscellaneous file type

.r90 - Miscellaneous file type

.r91 - Miscellaneous file type

.r92 - Miscellaneous file type

.r93 - Miscellaneous file type

.r94 - Miscellaneous file type

.r95 - Miscellaneous file type

.r96 - Miscellaneous file type

.r97 - Miscellaneous file type

.r98 - Miscellaneous file type

.r99 - Miscellaneous file type

.ra - Audio file type

.ra0, ra1, ... - Archive file type

.rad - Miscellaneous file type

.raf - Image file type

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

.ral - Data file type

.ram - Audio file type

.ramp - Miscellaneous file type

.rap - Miscellaneous file type

.rar - Archive file type

.rar_ - Archive file type

.ras - Image file type

.rast - Miscellaneous file type

.rat - Miscellaneous file type

.ratdvd - Miscellaneous file type

.rav - Miscellaneous file type

.raw - Image file type

.raw valuetype: stri...dll - Miscellaneous file type

.rawc - Miscellaneous file type

.rawt - Miscellaneous file type

.rax - Video file type

.ray - Image file type

.rb - Source code and script files

.rba - Miscellaneous file type

.rbbas - Miscellaneous file type

.rbc - Backup file type

.rbd - Miscellaneous file type

.rbe - Miscellaneous file type

.rbf - Backup file type

.rbfm - Miscellaneous file type

.rbg - Miscellaneous file type

.rbh - Miscellaneous file type

.rbk - Backup file type

.rbl - Miscellaneous file type

.rbm - Game file type

.rbmenu - Miscellaneous file type

.rbo - Miscellaneous file type

.rbp - Miscellaneous file type

.rbs - Miscellaneous file type

.rbvcp - Miscellaneous file type

.rbw - Miscellaneous file type

.rbx - Miscellaneous file type

.rbxl - Game file type

.rc - Source code and script files

.rc2 - Source code and script files

.rc4 - Encrypted file type

.rcak - Miscellaneous file type

.rcd - Data file type

.rce - Miscellaneous file type

.RCF - Miscellaneous file type

.rcg - Data file type

.rcl - Disk Image file type

.rco - Miscellaneous file type

.rcp - Miscellaneous file type

.rct - Miscellaneous file type

.RCV - Miscellaneous file type

.rcx - Miscellaneous file type

.rcy - Miscellaneous file type

.rd - Miscellaneous file type

.RDA - Miscellaneous file type

.rdata - Miscellaneous file type

.rdc - Miscellaneous file type

.rdf - Settings file type

.rdfs - Miscellaneous file type

.rdi - Miscellaneous file type

.rdl - Miscellaneous file type

.rdlc - Miscellaneous file type

.RDLX - Miscellaneous file type

.rdlx-master - Miscellaneous file type

.RDLX-THEME - Miscellaneous file type

.rdml - Miscellaneous file type

.rdp - Configuration file type

.rdpf - Miscellaneous file type

.rdt - Miscellaneous file type

.rdw - Miscellaneous file type

.rdx - Miscellaneous file type

.re - Miscellaneous file type

.RE4MM - Miscellaneous file type

.readme - Text file type

.realmedia - Miscellaneous file type

.reapeaks - Miscellaneous file type

.reapindex - Miscellaneous file type

.rec - Video file type

.recordnowsendtoext - Miscellaneous file type

.red - Miscellaneous file type

.ref - Text file type

.reflector - Miscellaneous file type

.reg - System file type

.reg_aq - Miscellaneous file type

.regkey - Miscellaneous file type

.rels - Text file type

.rem - Database file type

.remotecodec - Miscellaneous file type

.remotemap - Miscellaneous file type

.reo - Miscellaneous file type

.rep - Text file type

.report - Miscellaneous file type

.req - Miscellaneous file type

.res - Source code and script files

.resmoncfg - Miscellaneous file type

.resx - Miscellaneous file type

.rev - Text file type

.rex - Audio file type

.rex2 - Miscellaneous file type

.rexx - Miscellaneous file type

.rez - Miscellaneous file type

.rf - Text file type

.rf5 - Miscellaneous file type

.rf64 - Miscellaneous file type

.rfb - Miscellaneous file type

.rfc - Miscellaneous file type

.rfc822 - Email related file type

.rfl - Audio file type

.rfn - Miscellaneous file type

.rfp - Data file type

.rfq - Miscellaneous file type

.rft - Miscellaneous file type

.rfx - Miscellaneous file type

.rga - Miscellaneous file type

.rgb - Image file type

.rgba - Image file type

.rgf - Miscellaneous file type

.rgn - Game file type

.rgo - Miscellaneous file type

.rgp - Miscellaneous file type

.rgr - Miscellaneous file type

.rgs - Executable file type

.rgx - Miscellaneous file type

.rh - Source code and script files

.rhistory - Miscellaneous file type

.rhm - Miscellaneous file type

.rhp - Miscellaneous file type

.ri - Data file type

.rib - Graphic file type

.rif - Image file type

.rim - Miscellaneous file type

.ring - Miscellaneous file type

.rip - Miscellaneous file type

.rir - Miscellaneous file type

.ris - Data file type

.rix - Image file type

.rjs - Miscellaneous file type

.rjt - Miscellaneous file type

.rkv - Archive file type

.rl4 - Image file type

.rl8 - Image file type

.rla - Image file type

.rlb - Image file type

.rlc - Graphic file type

.rld - Temporary Files

.rle - Image file type

.rll - Miscellaneous file type

.rlp - Miscellaneous file type

.rlst - Miscellaneous file type

.rlz - Source code and script files

.rm - Video file type

.rma - Miscellaneous file type

.rmap8 - Miscellaneous file type

.rmb - Backup file type

.rmf - Miscellaneous file type

.rmg - Miscellaneous file type

.rmgc - Miscellaneous file type

.rmi - Audio file type

.rmid - Miscellaneous file type

.rmim - Video file type

.rmj - Audio file type

.rmk - Miscellaneous file type

.rml - Miscellaneous file type

.rmm - Audio file type

.rmp - Video file type

.rmr - Miscellaneous file type

.rms - Video file type

.rmvb - Video file type

.rmx - Audio file type

.rn - Miscellaneous file type

.rnd - Graphic file type

.rng - Audio file type

.rnk - Miscellaneous file type

.rno - Source code and script files

.rnp - Miscellaneous file type

.rns - Miscellaneous file type

.rnx - Audio file type

.rob - Miscellaneous file type

.rockwell - Miscellaneous file type

.rockwell-2 - Miscellaneous file type

.rockwell-3 - Miscellaneous file type

.rockwell-4 - Miscellaneous file type

.rodl - Miscellaneous file type

.rol - Miscellaneous file type

.role - Miscellaneous file type

.rom - Emulator file type

.roo - Miscellaneous file type

.rop - Miscellaneous file type

.roq - Miscellaneous file type

.roTest - Miscellaneous file type

.roTestResult - Miscellaneous file type

.Roxio - Miscellaneous file type

.rp - Video file type

.rpb - Configuration file type

.rpbm - Image file type

.rpc - Text file type

.rpcp - Miscellaneous file type

.rpd - Database file type

.rpf - Graphic file type

.rpg - Miscellaneous file type

.rpgm - Image file type

.rpk - Miscellaneous file type

.rpl - Text file type

.RPLIB - Miscellaneous file type

.rpln - Miscellaneous file type

.rpm - Archive file type

.rpmsg - Internet related file type

.rpn - Data file type

.rpnm - Image file type

.rpp - Source code and script files

.rpp-bak - Miscellaneous file type

.rppm - Image file type

.RPPRJ - Miscellaneous file type

.rpps - Miscellaneous file type

.rps - Miscellaneous file type

.rpt - Data file type

.rptproj - Miscellaneous file type

.rpx - Miscellaneous file type

.rpxm - Miscellaneous file type

.RQM - Miscellaneous file type

.rqy - Miscellaneous file type

.rr2 - Miscellaneous file type

.rrd - Database file type

.rrg - Miscellaneous file type

.rrr - Backup file type

.rs - Data file type

.rsb - Image file type

.rsc - Data file type

.rsd - Database file type

.rsf - Data file type

.rsid - Miscellaneous file type

.rsk - Miscellaneous file type

.rsl - Miscellaneous file type

.rsm - Data file type

.rsml - Audio file type

.rsp - Data file type

.rsr - Miscellaneous file type

.rsrc - Data file type

.rss - Internet related file type

.rst - Miscellaneous file type

.rsw - Miscellaneous file type

.rt - Text file type

.rt2 - Miscellaneous file type

.rt3 - Miscellaneous file type

.rtc - Miscellaneous file type

.rtd - Miscellaneous file type

.rte - Miscellaneous file type

.rtf - Text file type

.rtfd - Miscellaneous file type

.rtl - Text file type

.rtp - Data file type

.rts - Video file type

.rtsp - Miscellaneous file type

.rtstn - Miscellaneous file type

.rtt - Miscellaneous file type

.rtwsh - Miscellaneous file type

.rtx - Miscellaneous file type

.rul - Data file type

.ruleset - Miscellaneous file type

.run - Data file type

.rus - Miscellaneous file type

.rv - Video file type

.rv7 - Miscellaneous file type

.rvf - Text file type

.rvw - Miscellaneous file type

.rvx - Video file type

.rw2 - Image file type

.rwg - Miscellaneous file type

.rwl - Miscellaneous file type

.rws - Miscellaneous file type

.rwx - Miscellaneous file type

.rwz - Configuration file type

.rx2 - Miscellaneous file type

.rxd - Data file type

.rxf - Miscellaneous file type

.rxp - Miscellaneous file type

.rxs - Miscellaneous file type

.rxsln - Miscellaneous file type

.rxt - Miscellaneous file type

.rz - Miscellaneous file type

.rzk - Miscellaneous file type

.RZP - Miscellaneous file type

.rzs - Miscellaneous file type

.rzx - Encrypted file type

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