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)

.i - Source code and script files

.i2g - Miscellaneous file type

.i3c - Data file type

.i3f - Miscellaneous file type

.i3m - Miscellaneous file type

.iAcc - Miscellaneous file type

.iad - Miscellaneous file type

.iaf - Configuration file type

.iam - Graphic file type

.iAnim - Miscellaneous file type

.iap - Miscellaneous file type

.iap_xml - Miscellaneous file type

.iAtm - Miscellaneous file type

.iAvatar - Miscellaneous file type

.iax - Image file type

.ib - Miscellaneous file type

.ibb - Miscellaneous file type

.ibc - Miscellaneous file type

.ibd - Miscellaneous file type

.ibe - Miscellaneous file type

.ibg - Graphic file type

.ibin - Miscellaneous file type

.ibk - Miscellaneous file type

.ibm - Archive file type

.ibp - Miscellaneous file type

.ibq - Disk Image file type

.ica - Image file type

.iCam - Miscellaneous file type

.icap - Miscellaneous file type

.icash - Miscellaneous file type

.icb - Image file type

.icc - Configuration file type

.icd - Miscellaneous file type

.ice - Archive file type

.ICEOWSDocICE - Miscellaneous file type

.ICEOWSDocZIP - Miscellaneous file type

.icf - Archive file type

.icg - Miscellaneous file type

.ichat - Miscellaneous file type

.icl - Graphic file type

.icm - Configuration file type

.icma - Miscellaneous file type

.icml - Miscellaneous file type

.icms - Miscellaneous file type

.icmt - Miscellaneous file type

.icn - Graphic file type

.icns - Graphic file type

.ico - Graphic file type

.icon - Miscellaneous file type

.iconpackage - Miscellaneous file type

.iconset - Miscellaneous file type

.icpr - Graphic file type

.icproj - Miscellaneous file type

.icr - Miscellaneous file type

.ics - Data file type

.icst - Document file type

.icut - Miscellaneous file type

.id - Miscellaneous file type

.ida - Miscellaneous file type

.idaf - Miscellaneous file type

.idap - Miscellaneous file type

.idb - Source code and script files

.idc - Source code and script files

.ide - Miscellaneous file type

.idemo - Miscellaneous file type

.idf - Configuration file type

.idl - Source code and script files

.idlk - Miscellaneous file type

.idml - Miscellaneous file type

.idms - Miscellaneous file type

.idpk - Miscellaneous file type

.idpp - Miscellaneous file type

.idq - Miscellaneous file type

.ids - Miscellaneous file type

.idt - Miscellaneous file type

.idv - Miscellaneous file type

.idw - Graphic file type

.idx - System file type

.ies - Data file type

.iEye - Miscellaneous file type

.iFace - Miscellaneous file type

.ifb - Miscellaneous file type

.ifd - Data file type

.iff - Graphic file type

.IFH - Miscellaneous file type

.ifl - Miscellaneous file type

.ifm - Data file type

.ifo - Video file type

.iFog - Miscellaneous file type

.ifp - Miscellaneous file type

.ifs - Data file type

.iftp - Miscellaneous file type

.ifx - Miscellaneous file type

.iges - Graphic file type

.igf - Graphic file type

.iGrass - Miscellaneous file type

.igs - Graphic file type

.igt - Miscellaneous file type

.igw - Miscellaneous file type

.igx - Miscellaneous file type

.iHair - Miscellaneous file type

.iHand - Miscellaneous file type

.ihk - Miscellaneous file type

.ihp - Miscellaneous file type

.ihs - Miscellaneous file type

.ihtml - Miscellaneous file type

.iif - Data file type

.iii - Miscellaneous file type

.iim - Miscellaneous file type

.iImgLayer - Miscellaneous file type

.iip - Miscellaneous file type

.iiq - Miscellaneous file type

.iit - Miscellaneous file type

.iiw - Plugin file type

.ikkey - Miscellaneous file type

.ikm - Miscellaneous file type

.il - Source code and script files

.ilb - Data file type

.ilbm - Miscellaneous file type

.ild - Miscellaneous file type

.ilg - Text file type

.iLight - Miscellaneous file type

.ilk - Source code and script files

.ILM - Miscellaneous file type

.ilomap - Miscellaneous file type

.iloprj - Miscellaneous file type

.ilosln - Miscellaneous file type

.iLower - Miscellaneous file type

.ils - Miscellaneous file type

.im8 - Graphic file type

.ima - Graphic file type

.imb - Email related file type

.imc - Game file type

.imd4 - Miscellaneous file type

.ime - Miscellaneous file type

.imf - Data file type

.img - Disk Image file type

.imi - Miscellaneous file type

.imk - Miscellaneous file type

.imm - Miscellaneous file type

.imn - Miscellaneous file type

.iMotion - Miscellaneous file type

.imp - Archive file type

.imq - Archive file type

.imr - Data file type

.ims - Data file type

.imsobj - Miscellaneous file type

.imsp - Miscellaneous file type

.imsproj - Miscellaneous file type

.iMtl - Miscellaneous file type

.imw - Miscellaneous file type

.imx - Graphic file type

.imy - Miscellaneous file type

.in$ - Miscellaneous file type

.in_ - Miscellaneous file type

.in3 - Graphic file type

.INA - Miscellaneous file type

.inb - Miscellaneous file type

.inc - Text file type

.inca - Miscellaneous file type

.incd - Miscellaneous file type

.InCDSendTo - Miscellaneous file type

.incp - Miscellaneous file type

.inct - Miscellaneous file type

.incx - Miscellaneous file type

.ind - Miscellaneous file type

.indb - Miscellaneous file type

.indd - Graphic file type

.index - Miscellaneous file type

.indk - Miscellaneous file type

.indl - Miscellaneous file type

.indp - Miscellaneous file type

.inds - Miscellaneous file type

.indt - Miscellaneous file type

.inf - Configuration file type

.inf_aq - Miscellaneous file type

.info - Image file type

.infopathxml - Miscellaneous file type

.ingr - Graphic file type

.INH - Miscellaneous file type

.ini - Text file type

.INIMM - Miscellaneous file type

.ink - Data file type

.inl - Miscellaneous file type

.inlx - Miscellaneous file type

.inrs - Miscellaneous file type

.ins - Source code and script files

.ins_aq - Miscellaneous file type

.insaniquariumdeluxe...dll - Game file type

.inst - Miscellaneous file type

.install - Miscellaneous file type

.int - Data file type

.inta - Miscellaneous file type

.InternetMailSend - Miscellaneous file type

.intf - Miscellaneous file type

.inv - Archive file type

.inx - Executable file type

.io - Source code and script files

.ioc - Graphic file type

.iOral - Miscellaneous file type

.ip - Data file type

.ip3 - Miscellaneous file type

.ipa - Archive file type

.iParticle - Miscellaneous file type

.ipd - Backup file type

.ipf - Emulator file type

.ipg - Miscellaneous file type

.iphoto - Miscellaneous file type

.ipj - Miscellaneous file type

.ipk - Archive file type

.ipl - Miscellaneous file type

.ipn - Miscellaneous file type

.ipo - Miscellaneous file type

.ipp - Miscellaneous file type

.ipproj - Miscellaneous file type

.ipr - Miscellaneous file type

.iProject - Miscellaneous file type

.iProp - Miscellaneous file type

.ips - Game file type

.ipsw - Miscellaneous file type

.ipt - Graphic file type

.iptc - Miscellaneous file type

.IPTHEME - Miscellaneous file type

.iqy - Internet related file type

.irb - Miscellaneous file type

.ird - Miscellaneous file type

.iri - Image file type

.iris - Graphic file type

.iros - Miscellaneous file type

.irp - Miscellaneous file type

.irs - Miscellaneous file type

.irt - Miscellaneous file type

.irtr - Graphic file type

.irx - Data file type

.isa - Miscellaneous file type

.isb - Miscellaneous file type

.iScene - Miscellaneous file type

.isd - Miscellaneous file type

.ise - Miscellaneous file type

.isf - Data file type

.ish - Archive file type

.ish1 - Miscellaneous file type

.ish2 - Miscellaneous file type

.ish3 - Miscellaneous file type

.iShoe - Miscellaneous file type

.isk - Miscellaneous file type

.iSky - Miscellaneous file type

.isl - Miscellaneous file type

.ism - Miscellaneous file type

.ismv - Miscellaneous file type

.isn - Source code and script files

.iso - Disk Image file type

.isp - Configuration file type

.isp_aq - Miscellaneous file type

.ispro - Miscellaneous file type

.isproj - Miscellaneous file type

.iss - Source code and script files

.ist - Miscellaneous file type

.isu - Executable file type

.isv - Miscellaneous file type

.isvs - Miscellaneous file type

.isx - Miscellaneous file type

.isz - Disk Image file type

.it - Audio file type

.ita - Miscellaneous file type

.itb - Video file type

.itc - Data file type

.itc2 - Image file type

.itd - Miscellaneous file type

.itdb - Database file type

.ite - Miscellaneous file type

.iTerrain - Miscellaneous file type

.itf - Miscellaneous file type

.itg - Miscellaneous file type

.ithmb - Graphic file type

.iti - Miscellaneous file type

.itl - Audio file type

.itlp - Miscellaneous file type

.itm - Miscellaneous file type

.itms - Miscellaneous file type

.itn - Data file type

.itp - Miscellaneous file type

.itpc - Miscellaneous file type

.iTree - Miscellaneous file type

.its - Text file type

.its51 - Miscellaneous file type

.itss - Miscellaneous file type

.itt - Miscellaneous file type

.itz - Audio file type

.iup - Miscellaneous file type

.iUpper - Miscellaneous file type

.ius - Miscellaneous file type

.iuscd - Miscellaneous file type

.iv - Graphic file type

.iv2i - Miscellaneous file type

.ivc - Miscellaneous file type

.ive - Graphic file type

.ivf - Video file type

.ivivo - Miscellaneous file type

.ivn - Miscellaneous file type

.ivnz - Miscellaneous file type

.ivp - Image file type

.ivr - Image file type

.iv-vrml - Text file type

.iw - Miscellaneous file type

.iw4 - Miscellaneous file type

.iw44 - Miscellaneous file type

.iwa - Text file type

.iWater - Miscellaneous file type

.iwi - Miscellaneous file type

.iWidget - Miscellaneous file type

.iwp - Miscellaneous file type

.iws - Miscellaneous file type

.IWZ - Miscellaneous file type

.ix - Database file type

.ix2 - Database file type

.ixa - Miscellaneous file type

.ixb - Miscellaneous file type

.ixp - Miscellaneous file type

.ize - Miscellaneous file type

.izt - Binary file type

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