Here is an (almost) complete file extensions’s MIME in a JSON format.
You can do these examples: MIME["ppt"], MIME["docx"], etc
{
"x3d": "application/vnd.hzn-3d-crossword",
"3gp": "video/3gpp",
"3g2": "video/3gpp2",
"mseq": "application/vnd.mseq",
"pwn": "application/vnd.3m.post-it-notes",
"plb": "application/vnd.3gpp.pic-bw-large",
"psb": "application/vnd.3gpp.pic-bw-small",
"pvb": "application/vnd.3gpp.pic-bw-var",
"tcap": "application/vnd.3gpp2.tcap",
"7z": "application/x-7z-compressed",
"abw": "application/x-abiword",
"ace": "application/x-ace-compressed",
"acc": "application/vnd.americandynamics.acc",
"acu": "application/vnd.acucobol",
"atc": "application/vnd.acucorp",
"adp": "audio/adpcm",
"aab": "application/x-authorware-bin",
"aam": "application/x-authorware-map",
"aas": "application/x-authorware-seg",
"air": "application/vnd.adobe.air-application-installer-package+zip",
"swf": "application/x-shockwave-flash",
"fxp": "application/vnd.adobe.fxp",
"pdf": "application/pdf",
"ppd": "application/vnd.cups-ppd",
"dir": "application/x-director",
"xdp": "application/vnd.adobe.xdp+xml",
"xfdf": "application/vnd.adobe.xfdf",
"aac": "audio/x-aac",
"ahead": "application/vnd.ahead.space",
"azf": "application/vnd.airzip.filesecure.azf",
"azs": "application/vnd.airzip.filesecure.azs",
"azw": "application/vnd.amazon.ebook",
"ami": "application/vnd.amiga.ami",
"N/A": "application/andrew-inset",
"apk": "application/vnd.android.package-archive",
"cii": "application/vnd.anser-web-certificate-issue-initiation",
"fti": "application/vnd.anser-web-funds-transfer-initiation",
"atx": "application/vnd.antix.game-component",
"dmg": "application/x-apple-diskimage",
"mpkg": "application/vnd.apple.installer+xml",
"aw": "application/applixware",
"mp3": "audio/mpeg",
"les": "application/vnd.hhe.lesson-player",
"swi": "application/vnd.aristanetworks.swi",
"s": "text/x-asm",
"atomcat": "application/atomcat+xml",
"atomsvc": "application/atomsvc+xml",
"atom": "application/atom+xml",
"ac": "application/pkix-attr-cert",
"aif": "audio/x-aiff",
"avi": "video/x-msvideo",
"aep": "application/vnd.audiograph",
"dxf": "image/vnd.dxf",
"dwf": "model/vnd.dwf",
"par": "text/plain-bas",
"bcpio": "application/x-bcpio",
"bin": "application/octet-stream",
"bmp": "image/bmp",
"torrent": "application/x-bittorrent",
"cod": "application/vnd.rim.cod",
"mpm": "application/vnd.blueice.multipass",
"bmi": "application/vnd.bmi",
"sh": "application/x-sh",
"btif": "image/prs.btif",
"rep": "application/vnd.businessobjects",
"bz": "application/x-bzip",
"bz2": "application/x-bzip2",
"csh": "application/x-csh",
"c": "text/x-c",
"cdxml": "application/vnd.chemdraw+xml",
"css": "text/css",
"cdx": "chemical/x-cdx",
"cml": "chemical/x-cml",
"csml": "chemical/x-csml",
"cdbcmsg": "application/vnd.contact.cmsg",
"cla": "application/vnd.claymore",
"c4g": "application/vnd.clonk.c4group",
"sub": "image/vnd.dvb.subtitle",
"cdmia": "application/cdmi-capability",
"cdmic": "application/cdmi-container",
"cdmid": "application/cdmi-domain",
"cdmio": "application/cdmi-object",
"cdmiq": "application/cdmi-queue",
"c11amc": "application/vnd.cluetrust.cartomobile-config",
"c11amz": "application/vnd.cluetrust.cartomobile-config-pkg",
"ras": "image/x-cmu-raster",
"dae": "model/vnd.collada+xml",
"csv": "text/csv",
"cpt": "application/mac-compactpro",
"wmlc": "application/vnd.wap.wmlc",
"cgm": "image/cgm",
"ice": "x-conference/x-cooltalk",
"cmx": "image/x-cmx",
"xar": "application/vnd.xara",
"cmc": "application/vnd.cosmocaller",
"cpio": "application/x-cpio",
"clkx": "application/vnd.crick.clicker",
"clkk": "application/vnd.crick.clicker.keyboard",
"clkp": "application/vnd.crick.clicker.palette",
"clkt": "application/vnd.crick.clicker.template",
"clkw": "application/vnd.crick.clicker.wordbank",
"wbs": "application/vnd.criticaltools.wbs+xml",
"cryptonote": "application/vnd.rig.cryptonote",
"cif": "chemical/x-cif",
"cmdf": "chemical/x-cmdf",
"cu": "application/cu-seeme",
"cww": "application/prs.cww",
"curl": "text/vnd.curl",
"dcurl": "text/vnd.curl.dcurl",
"mcurl": "text/vnd.curl.mcurl",
"scurl": "text/vnd.curl.scurl",
"car": "application/vnd.curl.car",
"pcurl": "application/vnd.curl.pcurl",
"cmp": "application/vnd.yellowriver-custom-menu",
"dssc": "application/dssc+der",
"xdssc": "application/dssc+xml",
"deb": "application/x-debian-package",
"uva": "audio/vnd.dece.audio",
"uvi": "image/vnd.dece.graphic",
"uvh": "video/vnd.dece.hd",
"uvm": "video/vnd.dece.mobile",
"uvu": "video/vnd.uvvu.mp4",
"uvp": "video/vnd.dece.pd",
"uvs": "video/vnd.dece.sd",
"uvv": "video/vnd.dece.video",
"dvi": "application/x-dvi",
"seed": "application/vnd.fdsn.seed",
"dtb": "application/x-dtbook+xml",
"res": "application/x-dtbresource+xml",
"ait": "application/vnd.dvb.ait",
"svc": "application/vnd.dvb.service",
"eol": "audio/vnd.digital-winds",
"djvu": "image/vnd.djvu",
"dtd": "application/xml-dtd",
"mlp": "application/vnd.dolby.mlp",
"wad": "application/x-doom",
"dpg": "application/vnd.dpgraph",
"dra": "audio/vnd.dra",
"dfac": "application/vnd.dreamfactory",
"dts": "audio/vnd.dts",
"dtshd": "audio/vnd.dts.hd",
"dwg": "image/vnd.dwg",
"geo": "application/vnd.dynageo",
"es": "application/ecmascript",
"mag": "application/vnd.ecowin.chart",
"mmr": "image/vnd.fujixerox.edmics-mmr",
"rlc": "image/vnd.fujixerox.edmics-rlc",
"exi": "application/exi",
"mgz": "application/vnd.proteus.magazine",
"epub": "application/epub+zip",
"eml": "message/rfc822",
"nml": "application/vnd.enliven",
"xpr": "application/vnd.is-xpr",
"xif": "image/vnd.xiff",
"xfdl": "application/vnd.xfdl",
"emma": "application/emma+xml",
"ez2": "application/vnd.ezpix-album",
"ez3": "application/vnd.ezpix-package",
"fst": "image/vnd.fst",
"fvt": "video/vnd.fvt",
"fbs": "image/vnd.fastbidsheet",
"fe_launch": "application/vnd.denovo.fcselayout-link",
"f4v": "video/x-f4v",
"flv": "video/x-flv",
"fpx": "image/vnd.fpx",
"npx": "image/vnd.net-fpx",
"flx": "text/vnd.fmi.flexstor",
"fli": "video/x-fli",
"ftc": "application/vnd.fluxtime.clip",
"fdf": "application/vnd.fdf",
"f": "text/x-fortran",
"mif": "application/vnd.mif",
"fm": "application/vnd.framemaker",
"fh": "image/x-freehand",
"fsc": "application/vnd.fsc.weblaunch",
"fnc": "application/vnd.frogans.fnc",
"ltf": "application/vnd.frogans.ltf",
"ddd": "application/vnd.fujixerox.ddd",
"xdw": "application/vnd.fujixerox.docuworks",
"xbd": "application/vnd.fujixerox.docuworks.binder",
"oas": "application/vnd.fujitsu.oasys",
"oa2": "application/vnd.fujitsu.oasys2",
"oa3": "application/vnd.fujitsu.oasys3",
"fg5": "application/vnd.fujitsu.oasysgp",
"bh2": "application/vnd.fujitsu.oasysprs",
"spl": "application/x-futuresplash",
"fzs": "application/vnd.fuzzysheet",
"g3": "image/g3fax",
"gmx": "application/vnd.gmx",
"gtw": "model/vnd.gtw",
"txd": "application/vnd.genomatix.tuxedo",
"ggb": "application/vnd.geogebra.file",
"ggt": "application/vnd.geogebra.tool",
"gdl": "model/vnd.gdl",
"gex": "application/vnd.geometry-explorer",
"gxt": "application/vnd.geonext",
"g2w": "application/vnd.geoplan",
"g3w": "application/vnd.geospace",
"gsf": "application/x-font-ghostscript",
"bdf": "application/x-font-bdf",
"gtar": "application/x-gtar",
"texinfo": "application/x-texinfo",
"gnumeric": "application/x-gnumeric",
"kml": "application/vnd.google-earth.kml+xml",
"kmz": "application/vnd.google-earth.kmz",
"gqf": "application/vnd.grafeq",
"gif": "image/gif",
"gv": "text/vnd.graphviz",
"gac": "application/vnd.groove-account",
"ghf": "application/vnd.groove-help",
"gim": "application/vnd.groove-identity-message",
"grv": "application/vnd.groove-injector",
"gtm": "application/vnd.groove-tool-message",
"tpl": "application/vnd.groove-tool-template",
"vcg": "application/vnd.groove-vcard",
"h261": "video/h261",
"h263": "video/h263",
"h264": "video/h264",
"hpid": "application/vnd.hp-hpid",
"hps": "application/vnd.hp-hps",
"hdf": "application/x-hdf",
"rip": "audio/vnd.rip",
"hbci": "application/vnd.hbci",
"jlt": "application/vnd.hp-jlyt",
"pcl": "application/vnd.hp-pcl",
"hpgl": "application/vnd.hp-hpgl",
"hvs": "application/vnd.yamaha.hv-script",
"hvd": "application/vnd.yamaha.hv-dic",
"hvp": "application/vnd.yamaha.hv-voice",
"sfd-hdstx": "application/vnd.hydrostatix.sof-data",
"stk": "application/hyperstudio",
"hal": "application/vnd.hal+xml",
"html": "text/html",
"irm": "application/vnd.ibm.rights-management",
"sc": "application/vnd.ibm.secure-container",
"ics": "text/calendar",
"icc": "application/vnd.iccprofile",
"ico": "image/x-icon",
"igl": "application/vnd.igloader",
"ief": "image/ief",
"ivp": "application/vnd.immervision-ivp",
"ivu": "application/vnd.immervision-ivu",
"rif": "application/reginfo+xml",
"3dml": "text/vnd.in3d.3dml",
"spot": "text/vnd.in3d.spot",
"igs": "model/iges",
"i2g": "application/vnd.intergeo",
"cdy": "application/vnd.cinderella",
"xpw": "application/vnd.intercon.formnet",
"fcs": "application/vnd.isac.fcs",
"ipfix": "application/ipfix",
"cer": "application/pkix-cert",
"pki": "application/pkixcmp",
"crl": "application/pkix-crl",
"pkipath": "application/pkix-pkipath",
"igm": "application/vnd.insors.igm",
"rcprofile": "application/vnd.ipunplugged.rcprofile",
"irp": "application/vnd.irepository.package+xml",
"jad": "text/vnd.sun.j2me.app-descriptor",
"jar": "application/java-archive",
"class": "application/java-vm",
"jnlp": "application/x-java-jnlp-file",
"ser": "application/java-serialized-object",
"java": "text/x-java-source,java",
"js": "application/javascript",
"json": "application/json",
"joda": "application/vnd.joost.joda-archive",
"jpm": "video/jpm",
"jpeg": "image/x-citrix-jpeg",
"jpg": "image/x-citrix-jpeg",
"pjpeg": "image/pjpeg",
"jpgv": "video/jpeg",
"ktz": "application/vnd.kahootz",
"mmd": "application/vnd.chipnuts.karaoke-mmd",
"karbon": "application/vnd.kde.karbon",
"chrt": "application/vnd.kde.kchart",
"kfo": "application/vnd.kde.kformula",
"flw": "application/vnd.kde.kivio",
"kon": "application/vnd.kde.kontour",
"kpr": "application/vnd.kde.kpresenter",
"ksp": "application/vnd.kde.kspread",
"kwd": "application/vnd.kde.kword",
"htke": "application/vnd.kenameaapp",
"kia": "application/vnd.kidspiration",
"kne": "application/vnd.kinar",
"sse": "application/vnd.kodak-descriptor",
"lasxml": "application/vnd.las.las+xml",
"latex": "application/x-latex",
"lbd": "application/vnd.llamagraphics.life-balance.desktop",
"lbe": "application/vnd.llamagraphics.life-balance.exchange+xml",
"jam": "application/vnd.jam",
"123": "application/vnd.lotus-1-2-3",
"apr": "application/vnd.lotus-approach",
"pre": "application/vnd.lotus-freelance",
"nsf": "application/vnd.lotus-notes",
"org": "application/vnd.lotus-organizer",
"scm": "application/vnd.lotus-screencam",
"lwp": "application/vnd.lotus-wordpro",
"lvp": "audio/vnd.lucent.voice",
"m3u": "audio/x-mpegurl",
"m4v": "video/x-m4v",
"hqx": "application/mac-binhex40",
"portpkg": "application/vnd.macports.portpkg",
"mgp": "application/vnd.osgeo.mapguide.package",
"mrc": "application/marc",
"mrcx": "application/marcxml+xml",
"mxf": "application/mxf",
"nbp": "application/vnd.wolfram.player",
"ma": "application/mathematica",
"mathml": "application/mathml+xml",
"mbox": "application/mbox",
"mc1": "application/vnd.medcalcdata",
"mscml": "application/mediaservercontrol+xml",
"cdkey": "application/vnd.mediastation.cdkey",
"mwf": "application/vnd.mfer",
"mfm": "application/vnd.mfmp",
"msh": "model/mesh",
"mads": "application/mads+xml",
"mets": "application/mets+xml",
"mods": "application/mods+xml",
"meta4": "application/metalink4+xml",
"mcd": "application/vnd.mcd",
"flo": "application/vnd.micrografx.flo",
"igx": "application/vnd.micrografx.igx",
"es3": "application/vnd.eszigno3+xml",
"mdb": "application/x-msaccess",
"asf": "video/x-ms-asf",
"exe": "application/x-msdownload",
"cil": "application/vnd.ms-artgalry",
"cab": "application/vnd.ms-cab-compressed",
"ims": "application/vnd.ms-ims",
"application": "application/x-ms-application",
"clp": "application/x-msclip",
"mdi": "image/vnd.ms-modi",
"eot": "application/vnd.ms-fontobject",
"xls": "application/vnd.ms-excel",
"xlam": "application/vnd.ms-excel.addin.macroenabled.12",
"xlsb": "application/vnd.ms-excel.sheet.binary.macroenabled.12",
"xltm": "application/vnd.ms-excel.template.macroenabled.12",
"xlsm": "application/vnd.ms-excel.sheet.macroenabled.12",
"chm": "application/vnd.ms-htmlhelp",
"crd": "application/x-mscardfile",
"lrm": "application/vnd.ms-lrm",
"mvb": "application/x-msmediaview",
"mny": "application/x-msmoney",
"pptx": "application/vnd.openxmlformats-officedocument.presentationml.presentation",
"sldx": "application/vnd.openxmlformats-officedocument.presentationml.slide",
"ppsx": "application/vnd.openxmlformats-officedocument.presentationml.slideshow",
"potx": "application/vnd.openxmlformats-officedocument.presentationml.template",
"xlsx": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
"xltx": "application/vnd.openxmlformats-officedocument.spreadsheetml.template",
"docx": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
"dotx": "application/vnd.openxmlformats-officedocument.wordprocessingml.template",
"obd": "application/x-msbinder",
"thmx": "application/vnd.ms-officetheme",
"onetoc": "application/onenote",
"pya": "audio/vnd.ms-playready.media.pya",
"pyv": "video/vnd.ms-playready.media.pyv",
"ppt": "application/vnd.ms-powerpoint",
"ppam": "application/vnd.ms-powerpoint.addin.macroenabled.12",
"sldm": "application/vnd.ms-powerpoint.slide.macroenabled.12",
"pptm": "application/vnd.ms-powerpoint.presentation.macroenabled.12",
"ppsm": "application/vnd.ms-powerpoint.slideshow.macroenabled.12",
"potm": "application/vnd.ms-powerpoint.template.macroenabled.12",
"mpp": "application/vnd.ms-project",
"pub": "application/x-mspublisher",
"scd": "application/x-msschedule",
"xap": "application/x-silverlight-app",
"stl": "application/vnd.ms-pki.stl",
"cat": "application/vnd.ms-pki.seccat",
"vsd": "application/vnd.visio",
"vsdx": "application/vnd.visio2013",
"wm": "video/x-ms-wm",
"wma": "audio/x-ms-wma",
"wax": "audio/x-ms-wax",
"wmx": "video/x-ms-wmx",
"wmd": "application/x-ms-wmd",
"wpl": "application/vnd.ms-wpl",
"wmz": "application/x-ms-wmz",
"wmv": "video/x-ms-wmv",
"wvx": "video/x-ms-wvx",
"wmf": "application/x-msmetafile",
"trm": "application/x-msterminal",
"doc": "application/msword",
"docm": "application/vnd.ms-word.document.macroenabled.12",
"dotm": "application/vnd.ms-word.template.macroenabled.12",
"wri": "application/x-mswrite",
"wps": "application/vnd.ms-works",
"xbap": "application/x-ms-xbap",
"xps": "application/vnd.ms-xpsdocument",
"mid": "audio/midi",
"mpy": "application/vnd.ibm.minipay",
"afp": "application/vnd.ibm.modcap",
"rms": "application/vnd.jcp.javame.midlet-rms",
"tmo": "application/vnd.tmobile-livetv",
"prc": "application/x-mobipocket-ebook",
"mbk": "application/vnd.mobius.mbk",
"dis": "application/vnd.mobius.dis",
"plc": "application/vnd.mobius.plc",
"mqy": "application/vnd.mobius.mqy",
"msl": "application/vnd.mobius.msl",
"txf": "application/vnd.mobius.txf",
"daf": "application/vnd.mobius.daf",
"fly": "text/vnd.fly",
"mpc": "application/vnd.mophun.certificate",
"mpn": "application/vnd.mophun.application",
"mj2": "video/mj2",
"mpga": "audio/mpeg",
"mxu": "video/vnd.mpegurl",
"mpeg": "video/mpeg",
"m21": "application/mp21",
"mp4a": "audio/mp4",
"mp4": "video/mp4",
"m3u8": "application/vnd.apple.mpegurl",
"mus": "application/vnd.musician",
"msty": "application/vnd.muvee.style",
"mxml": "application/xv+xml",
"ngdat": "application/vnd.nokia.n-gage.data",
"n-gage": "application/vnd.nokia.n-gage.symbian.install",
"ncx": "application/x-dtbncx+xml",
"nc": "application/x-netcdf",
"nlu": "application/vnd.neurolanguage.nlu",
"dna": "application/vnd.dna",
"nnd": "application/vnd.noblenet-directory",
"nns": "application/vnd.noblenet-sealer",
"nnw": "application/vnd.noblenet-web",
"rpst": "application/vnd.nokia.radio-preset",
"rpss": "application/vnd.nokia.radio-presets",
"n3": "text/n3",
"edm": "application/vnd.novadigm.edm",
"edx": "application/vnd.novadigm.edx",
"ext": "application/vnd.novadigm.ext",
"gph": "application/vnd.flographit",
"ecelp4800": "audio/vnd.nuera.ecelp4800",
"ecelp7470": "audio/vnd.nuera.ecelp7470",
"ecelp9600": "audio/vnd.nuera.ecelp9600",
"oda": "application/oda",
"ogx": "application/ogg",
"oga": "audio/ogg",
"ogv": "video/ogg",
"dd2": "application/vnd.oma.dd2+xml",
"oth": "application/vnd.oasis.opendocument.text-web",
"opf": "application/oebps-package+xml",
"qbo": "application/vnd.intu.qbo",
"oxt": "application/vnd.openofficeorg.extension",
"osf": "application/vnd.yamaha.openscoreformat",
"weba": "audio/webm",
"webm": "video/webm",
"odc": "application/vnd.oasis.opendocument.chart",
"otc": "application/vnd.oasis.opendocument.chart-template",
"odb": "application/vnd.oasis.opendocument.database",
"odf": "application/vnd.oasis.opendocument.formula",
"odft": "application/vnd.oasis.opendocument.formula-template",
"odg": "application/vnd.oasis.opendocument.graphics",
"otg": "application/vnd.oasis.opendocument.graphics-template",
"odi": "application/vnd.oasis.opendocument.image",
"oti": "application/vnd.oasis.opendocument.image-template",
"odp": "application/vnd.oasis.opendocument.presentation",
"otp": "application/vnd.oasis.opendocument.presentation-template",
"ods": "application/vnd.oasis.opendocument.spreadsheet",
"ots": "application/vnd.oasis.opendocument.spreadsheet-template",
"odt": "application/vnd.oasis.opendocument.text",
"odm": "application/vnd.oasis.opendocument.text-master",
"ott": "application/vnd.oasis.opendocument.text-template",
"ktx": "image/ktx",
"sxc": "application/vnd.sun.xml.calc",
"stc": "application/vnd.sun.xml.calc.template",
"sxd": "application/vnd.sun.xml.draw",
"std": "application/vnd.sun.xml.draw.template",
"sxi": "application/vnd.sun.xml.impress",
"sti": "application/vnd.sun.xml.impress.template",
"sxm": "application/vnd.sun.xml.math",
"sxw": "application/vnd.sun.xml.writer",
"sxg": "application/vnd.sun.xml.writer.global",
"stw": "application/vnd.sun.xml.writer.template",
"otf": "application/x-font-otf",
"osfpvg": "application/vnd.yamaha.openscoreformat.osfpvg+xml",
"dp": "application/vnd.osgi.dp",
"pdb": "application/vnd.palm",
"p": "text/x-pascal",
"paw": "application/vnd.pawaafile",
"pclxl": "application/vnd.hp-pclxl",
"efif": "application/vnd.picsel",
"pcx": "image/x-pcx",
"psd": "image/vnd.adobe.photoshop",
"prf": "application/pics-rules",
"pic": "image/x-pict",
"chat": "application/x-chat",
"p10": "application/pkcs10",
"p12": "application/x-pkcs12",
"p7m": "application/pkcs7-mime",
"p7s": "application/pkcs7-signature",
"p7r": "application/x-pkcs7-certreqresp",
"p7b": "application/x-pkcs7-certificates",
"p8": "application/pkcs8",
"plf": "application/vnd.pocketlearn",
"pnm": "image/x-portable-anymap",
"pbm": "image/x-portable-bitmap",
"pcf": "application/x-font-pcf",
"pfr": "application/font-tdpfr",
"pgn": "application/x-chess-pgn",
"pgm": "image/x-portable-graymap",
"png": "image/x-png",
"ppm": "image/x-portable-pixmap",
"pskcxml": "application/pskc+xml",
"pml": "application/vnd.ctc-posml",
"ai": "application/postscript",
"pfa": "application/x-font-type1",
"pbd": "application/vnd.powerbuilder6",
"pgp": "application/pgp-signature",
"box": "application/vnd.previewsystems.box",
"ptid": "application/vnd.pvi.ptid1",
"pls": "application/pls+xml",
"str": "application/vnd.pg.format",
"ei6": "application/vnd.pg.osasli",
"dsc": "text/prs.lines.tag",
"psf": "application/x-font-linux-psf",
"qps": "application/vnd.publishare-delta-tree",
"wg": "application/vnd.pmi.widget",
"qxd": "application/vnd.quark.quarkxpress",
"esf": "application/vnd.epson.esf",
"msf": "application/vnd.epson.msf",
"ssf": "application/vnd.epson.ssf",
"qam": "application/vnd.epson.quickanime",
"qfx": "application/vnd.intu.qfx",
"qt": "video/quicktime",
"rar": "application/x-rar-compressed",
"ram": "audio/x-pn-realaudio",
"rmp": "audio/x-pn-realaudio-plugin",
"rsd": "application/rsd+xml",
"rm": "application/vnd.rn-realmedia",
"bed": "application/vnd.realvnc.bed",
"mxl": "application/vnd.recordare.musicxml",
"musicxml": "application/vnd.recordare.musicxml+xml",
"rnc": "application/relax-ng-compact-syntax",
"rdz": "application/vnd.data-vision.rdz",
"rdf": "application/rdf+xml",
"rp9": "application/vnd.cloanto.rp9",
"jisp": "application/vnd.jisp",
"rtf": "application/rtf",
"rtx": "text/richtext",
"link66": "application/vnd.route66.link66+xml",
"rss": "application/rss+xml",
"shf": "application/shf+xml",
"st": "application/vnd.sailingtracker.track",
"svg": "image/svg+xml",
"sus": "application/vnd.sus-calendar",
"sru": "application/sru+xml",
"setpay": "application/set-payment-initiation",
"setreg": "application/set-registration-initiation",
"sema": "application/vnd.sema",
"semd": "application/vnd.semd",
"semf": "application/vnd.semf",
"see": "application/vnd.seemail",
"snf": "application/x-font-snf",
"spq": "application/scvp-vp-request",
"spp": "application/scvp-vp-response",
"scq": "application/scvp-cv-request",
"scs": "application/scvp-cv-response",
"sdp": "application/sdp",
"etx": "text/x-setext",
"movie": "video/x-sgi-movie",
"ifm": "application/vnd.shana.informed.formdata",
"itp": "application/vnd.shana.informed.formtemplate",
"iif": "application/vnd.shana.informed.interchange",
"ipk": "application/vnd.shana.informed.package",
"tfi": "application/thraud+xml",
"shar": "application/x-shar",
"rgb": "image/x-rgb",
"slt": "application/vnd.epson.salt",
"aso": "application/vnd.accpac.simply.aso",
"imp": "application/vnd.accpac.simply.imp",
"twd": "application/vnd.simtech-mindmapper",
"csp": "application/vnd.commonspace",
"saf": "application/vnd.yamaha.smaf-audio",
"mmf": "application/vnd.smaf",
"spf": "application/vnd.yamaha.smaf-phrase",
"teacher": "application/vnd.smart.teacher",
"svd": "application/vnd.svd",
"rq": "application/sparql-query",
"srx": "application/sparql-results+xml",
"gram": "application/srgs",
"grxml": "application/srgs+xml",
"ssml": "application/ssml+xml",
"skp": "application/vnd.koan",
"sgml": "text/sgml",
"sdc": "application/vnd.stardivision.calc",
"sda": "application/vnd.stardivision.draw",
"sdd": "application/vnd.stardivision.impress",
"smf": "application/vnd.stardivision.math",
"sdw": "application/vnd.stardivision.writer",
"sgl": "application/vnd.stardivision.writer-global",
"sm": "application/vnd.stepmania.stepchart",
"sit": "application/x-stuffit",
"sitx": "application/x-stuffitx",
"sdkm": "application/vnd.solent.sdkm+xml",
"xo": "application/vnd.olpc-sugar",
"au": "audio/basic",
"wqd": "application/vnd.wqd",
"sis": "application/vnd.symbian.install",
"smi": "application/smil+xml",
"xsm": "application/vnd.syncml+xml",
"bdm": "application/vnd.syncml.dm+wbxml",
"xdm": "application/vnd.syncml.dm+xml",
"sv4cpio": "application/x-sv4cpio",
"sv4crc": "application/x-sv4crc",
"sbml": "application/sbml+xml",
"tsv": "text/tab-separated-values",
"tiff": "image/tiff",
"tao": "application/vnd.tao.intent-module-archive",
"tar": "application/x-tar",
"tcl": "application/x-tcl",
"tex": "application/x-tex",
"tfm": "application/x-tex-tfm",
"tei": "application/tei+xml",
"txt": "text/plain",
"dxp": "application/vnd.spotfire.dxp",
"sfs": "application/vnd.spotfire.sfs",
"tsd": "application/timestamped-data",
"tpt": "application/vnd.trid.tpt",
"mxs": "application/vnd.triscape.mxs",
"t": "text/troff",
"tra": "application/vnd.trueapp",
"ttf": "application/x-font-ttf",
"ttl": "text/turtle",
"umj": "application/vnd.umajin",
"uoml": "application/vnd.uoml+xml",
"unityweb": "application/vnd.unity",
"ufd": "application/vnd.ufdl",
"uri": "text/uri-list",
"utz": "application/vnd.uiq.theme",
"ustar": "application/x-ustar",
"uu": "text/x-uuencode",
"vcs": "text/x-vcalendar",
"vcf": "text/x-vcard",
"vcd": "application/x-cdlink",
"vsf": "application/vnd.vsf",
"wrl": "model/vrml",
"vcx": "application/vnd.vcx",
"mts": "model/vnd.mts",
"vtu": "model/vnd.vtu",
"vis": "application/vnd.visionary",
"viv": "video/vnd.vivo",
"ccxml": "application/ccxml+xml,",
"vxml": "application/voicexml+xml",
"src": "application/x-wais-source",
"wbxml": "application/vnd.wap.wbxml",
"wbmp": "image/vnd.wap.wbmp",
"wav": "audio/x-wav",
"davmount": "application/davmount+xml",
"woff": "application/x-font-woff",
"wspolicy": "application/wspolicy+xml",
"webp": "image/webp",
"wtb": "application/vnd.webturbo",
"wgt": "application/widget",
"hlp": "application/winhlp",
"wml": "text/vnd.wap.wml",
"wmls": "text/vnd.wap.wmlscript",
"wmlsc": "application/vnd.wap.wmlscriptc",
"wpd": "application/vnd.wordperfect",
"stf": "application/vnd.wt.stf",
"wsdl": "application/wsdl+xml",
"xbm": "image/x-xbitmap",
"xpm": "image/x-xpixmap",
"xwd": "image/x-xwindowdump",
"der": "application/x-x509-ca-cert",
"fig": "application/x-xfig",
"xhtml": "application/xhtml+xml",
"xml": "application/xml",
"xdf": "application/xcap-diff+xml",
"xenc": "application/xenc+xml",
"xer": "application/patch-ops-error+xml",
"rl": "application/resource-lists+xml",
"rs": "application/rls-services+xml",
"rld": "application/resource-lists-diff+xml",
"xslt": "application/xslt+xml",
"xop": "application/xop+xml",
"xpi": "application/x-xpinstall",
"xspf": "application/xspf+xml",
"xul": "application/vnd.mozilla.xul+xml",
"xyz": "chemical/x-xyz",
"yaml": "text/yaml",
"yang": "application/yang",
"yin": "application/yin+xml",
"zir": "application/vnd.zul",
"zip": "application/zip",
"zmm": "application/vnd.handheld-entertainment+xml",
"zaz": "application/vnd.zzazz.deck+xml"
}
Edit:
According to @Octo Poulos suggestions:
- Separated jpeg and jpg MIME into two different keys
- updated the MIME of mp4 format to
video/mp4
This is a list of the MIME Types of all well known and lesser known file formats and kinds of documents from the Microsoft Office family.
You can find the MIME Types in the table ordered by the corresponding application Microsoft Word, Excel, Power Point and Access as well as the extension of the file.
Microsoft Word
| Extension | MIME-Type |
| DOC | application/msword |
| DOCX | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| DOT | application/msword |
| DOTX | application/vnd.openxmlformats-officedocument.wordprocessingml.template |
| DOCM | application/vnd.ms-word.document.macroEnabled.12 |
| DOTM | application/vnd.ms-word.template.macroEnabled.12 |
| DOCM | application/vnd.ms-word.document.macroEnabled.12 |
| DOTM | application/vnd.ms-word.template.macroEnabled.12 |
| WORD | application/msword |
| W6W | application/msword |
Microsoft Excel
| Extension | MIME-Type |
| XLS | application/msexcel |
| XLSX | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| XLT | application/msexcel |
| XLTX | application/vnd.openxmlformats-officedocument.spreadsheetml.template |
| XLA | application/msexcel |
| XLW | application/msexcel |
| XLSM | application/vnd.ms-excel.sheet.macroEnabled.12 |
| XLSB | application/vnd.ms-excel.sheet.binary.macroEnabled.12 |
| XLTM | application/vnd.ms-excel.template.macroEnabled.12 |
| XLAM | application/vnd.ms-excel.addin.macroEnabled.12 |
Microsoft PowerPoint
| Extension | MIME-Type |
| PPT | application/mspowerpoint |
| PPTX | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| POT | application/mspowerpoint |
| POTX | application/vnd.openxmlformats-officedocument.presentationml.template |
| PPS | application/mspowerpoint |
| PPSX | application/vnd.openxmlformats-officedocument.presentationml.slideshow |
| PPA | application/mspowerpoint |
| PPAM | application/vnd.ms-powerpoint.addin.macroEnabled.12 |
| PPTM | application/vnd.ms-powerpoint.presentation.macroEnabled.12 |
| PPSM | application/vnd.ms-powerpoint.slideshow.macroEnabled.12 |
| POTM | application/vnd.ms-powerpoint.template.macroEnabled.12 |
Microsoft Access
| Extension | MIME-Type |
| MDB | application/msaccess |
| ACCDA | application/msaccess |
| ACCDB | application/msaccess |
| ACCDE | application/msaccess |
| ACCDR | application/msaccess |
| ACCDT | application/msaccess |
| ADE | application/msaccess |
| ADP | application/msaccess |
| ADN | application/msaccess |
| MDE | application/msaccess |
| MDF | application/msaccess |
| MDN | application/msaccess |
| MDT | application/msaccess |
| MDW | application/msaccess |
Other
| Extension | MIME-Type |
| CALCX | application/vnd.ms-office.calx |
| HLP (Microsoft Windows Help) | application/x-winhelp |
| MPP (Microsoft Project) | application/msproject |
| THMX | application/vnd.ms-officetheme |
| WRI (Microsoft Write) | application/mswrite |
I hope, I could help you with this list. If I should have forgotten something, just write a comment.
This topic lists the most common MIME types with corresponding document types, ordered by their common extensions.
The following two important MIME types are the default types:
text/plainis the default value for textual files. A textual file should be human-readable and must not contain binary data.application/octet-streamis the default value for all other cases. An unknown file type should use this type. Browsers are particularly careful when manipulating these files to protect users from software vulnerabilities and possible dangerous behavior.
IANA is the official registry of MIME media types and maintains a list of all the official MIME types. This table lists important MIME types for the Web:
| Extension | Kind of document | MIME Type |
|---|---|---|
.aac |
AAC audio | audio/aac |
.abw |
AbiWord document | application/x-abiword |
.arc |
Archive document (multiple files embedded) | application/x-freearc |
.avif |
AVIF image | image/avif |
.avi |
AVI: Audio Video Interleave | video/x-msvideo |
.azw |
Amazon Kindle eBook format | application/vnd.amazon.ebook |
.bin |
Any kind of binary data | application/octet-stream |
.bmp |
Windows OS/2 Bitmap Graphics | image/bmp |
.bz |
BZip archive | application/x-bzip |
.bz2 |
BZip2 archive | application/x-bzip2 |
.cda |
CD audio | application/x-cdf |
.csh |
C-Shell script | application/x-csh |
.css |
Cascading Style Sheets (CSS) | text/css |
.csv |
Comma-separated values (CSV) | text/csv |
.doc |
Microsoft Word | application/msword |
.docx |
Microsoft Word (OpenXML) | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
.eot |
MS Embedded OpenType fonts | application/vnd.ms-fontobject |
.epub |
Electronic publication (EPUB) | application/epub+zip |
.gz |
GZip Compressed Archive | application/gzip |
.gif |
Graphics Interchange Format (GIF) | image/gif |
.htm, .html |
HyperText Markup Language (HTML) | text/html |
.ico |
Icon format | image/vnd.microsoft.icon |
.ics |
iCalendar format | text/calendar |
.jar |
Java Archive (JAR) | application/java-archive |
.jpeg, .jpg |
JPEG images | image/jpeg |
.js |
JavaScript | text/javascript (Specifications: HTML and RFC 9239) |
.json |
JSON format | application/json |
.jsonld |
JSON-LD format | application/ld+json |
.mid, .midi |
Musical Instrument Digital Interface (MIDI) | audio/midi, audio/x-midi |
.mjs |
JavaScript module | text/javascript |
.mp3 |
MP3 audio | audio/mpeg |
.mp4 |
MP4 video | video/mp4 |
.mpeg |
MPEG Video | video/mpeg |
.mpkg |
Apple Installer Package | application/vnd.apple.installer+xml |
.odp |
OpenDocument presentation document | application/vnd.oasis.opendocument.presentation |
.ods |
OpenDocument spreadsheet document | application/vnd.oasis.opendocument.spreadsheet |
.odt |
OpenDocument text document | application/vnd.oasis.opendocument.text |
.oga |
OGG audio | audio/ogg |
.ogv |
OGG video | video/ogg |
.ogx |
OGG | application/ogg |
.opus |
Opus audio | audio/opus |
.otf |
OpenType font | font/otf |
.png |
Portable Network Graphics | image/png |
.pdf |
Adobe Portable Document Format (PDF) | application/pdf |
.php |
Hypertext Preprocessor (Personal Home Page) | application/x-httpd-php |
.ppt |
Microsoft PowerPoint | application/vnd.ms-powerpoint |
.pptx |
Microsoft PowerPoint (OpenXML) | application/vnd.openxmlformats-officedocument.presentationml.presentation |
.rar |
RAR archive | application/vnd.rar |
.rtf |
Rich Text Format (RTF) | application/rtf |
.sh |
Bourne shell script | application/x-sh |
.svg |
Scalable Vector Graphics (SVG) | image/svg+xml |
.tar |
Tape Archive (TAR) | application/x-tar |
.tif, .tiff |
Tagged Image File Format (TIFF) | image/tiff |
.ts |
MPEG transport stream | video/mp2t |
.ttf |
TrueType Font | font/ttf |
.txt |
Text, (generally ASCII or ISO 8859-n) | text/plain |
.vsd |
Microsoft Visio | application/vnd.visio |
.wav |
Waveform Audio Format | audio/wav |
.weba |
WEBM audio | audio/webm |
.webm |
WEBM video | video/webm |
.webp |
WEBP image | image/webp |
.woff |
Web Open Font Format (WOFF) | font/woff |
.woff2 |
Web Open Font Format (WOFF) | font/woff2 |
.xhtml |
XHTML | application/xhtml+xml |
.xls |
Microsoft Excel | application/vnd.ms-excel |
.xlsx |
Microsoft Excel (OpenXML) | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
.xml |
XML | application/xml is recommended as of RFC 7303 (section 4.1), but text/xml is still used sometimes. You can assign a specific MIME type to a file with .xml extension depending on how its contents are meant to be interpreted. For instance, an Atom feed is application/atom+xml, but application/xml serves as a valid default. |
.xul |
XUL | application/vnd.mozilla.xul+xml |
.zip |
ZIP archive | application/zip |
.3gp |
3GPP audio/video container | video/3gpp; audio/3gpp if it doesn’t contain video |
.3g2 |
3GPP2 audio/video container | video/3gpp2; audio/3gpp2 if it doesn’t contain video |
.7z |
7-zip archive | application/x-7z-compressed |
This article describes MIME Types and the corresponding file extension of the Microsoft Office documents. It will very be useful for document analysis, and you can easily define ContentType for the Microsoft Office associated documents in ASP.NET applications. Also you can use this details to customize MIME types in IIS server configuration.
For Microsoft Office Excel, you can define content type like this example.
Aspx page
<%response.ContentType=“application/vnd.ms-excel”%>
C#
Response.ContentType = “application/vnd.ms-excel”;
The following table lists the MIME types and file extensions that are associated with the Microsoft Office documents.
| Extension | MIME Type |
| .doc | application/msword |
| .dot | application/msword |
| .docx | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| .dotx | application/vnd.openxmlformats-officedocument.wordprocessingml.template |
| .docm | application/vnd.ms-word.document.macroEnabled.12 |
| .dotm | application/vnd.ms-word.template.macroEnabled.12 |
| .xls | application/vnd.ms-excel |
| .xlt | application/vnd.ms-excel |
| .xla | application/vnd.ms-excel |
| .xlsx | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| .xltx | application/vnd.openxmlformats-officedocument.spreadsheetml.template |
| .xlsm | application/vnd.ms-excel.sheet.macroEnabled.12 |
| .xltm | application/vnd.ms-excel.template.macroEnabled.12 |
| .xlam | application/vnd.ms-excel.addin.macroEnabled.12 |
| .xlsb | application/vnd.ms-excel.sheet.binary.macroEnabled.12 |
| .ppt | application/vnd.ms-powerpoint |
| .pot | application/vnd.ms-powerpoint |
| .pps | application/vnd.ms-powerpoint |
| .ppa | application/vnd.ms-powerpoint |
| .pptx | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| .potx | application/vnd.openxmlformats-officedocument.presentationml.template |
| .ppsx | application/vnd.openxmlformats-officedocument.presentationml.slideshow |
| .ppam | application/vnd.ms-powerpoint.addin.macroEnabled.12 |
| .pptm | application/vnd.ms-powerpoint.presentation.macroEnabled.12 |
| .potm | application/vnd.ms-powerpoint.template.macroEnabled.12 |
| .ppsm | application/vnd.ms-powerpoint.slideshow.macroEnabled.12 |
Thanks,
Morgan
Software Developer