Converted gist from https://gist.github.com/AshHeskes/6038140

mime-types-to-file-extension.json

{
  "application/vnd.lotus-1-2-3": [".123"],
  "text/vnd.in3d.3dml": [".3dml"],
  "video/3gpp2": [".3g2"],
  "video/3gpp": [".3gp"],
  "application/octet-stream": [
    ".a",
    ".bin",
    ".bpk",
    ".deploy",
    ".dist",
    ".distz",
    ".dmg",
    ".dms",
    ".dump",
    ".elc",
    ".iso",
    ".lha",
    ".lrf",
    ".lzh",
    ".o",
    ".obj",
    ".pkg",
    ".so"
  ],
  "application/x-authorware-bin": [".aab", ".u32", ".vox", ".x32"],
  "audio/x-aac": [".aac"],
  "application/x-authorware-map": [".aam"],
  "application/x-authorware-seg": [".aas"],
  "application/x-abiword": [".abw"],
  "application/vnd.americandynamics.acc": [".acc"],
  "application/x-ace-compressed": [".ace"],
  "application/vnd.acucobol": [".acu"],
  "application/vnd.acucorp": [".acutc", ".atc"],
  "audio/adpcm": [".adp"],
  "application/vnd.audiograph": [".aep"],
  "application/x-font-type1": [".afm", ".pfa", ".pfb", ".pfm"],
  "application/vnd.ibm.modcap": [".afp", ".list3820", ".listafp"],
  "application/postscript": [".ai", ".eps", ".ps"],
  "audio/x-aiff": [".aif", ".aifc", ".aiff"],
  "application/vnd.adobe.air-application-installer-package+zip": [".air"],
  "application/vnd.amiga.ami": [".ami"],
  "application/vnd.android.package-archive": [".apk"],
  "application/x-ms-application": [".application"],
  "application/vnd.lotus-approach": [".apr"],
  "application/pgp-signature": [".asc", ".sig"],
  "video/x-ms-asf": [".asf", ".asx"],
  "text/x-asm": [".asm", ".s"],
  "application/vnd.accpac.simply.aso": [".aso"],
  "application/atom+xml": [".atom"],
  "application/atomcat+xml": [".atomcat"],
  "application/atomsvc+xml": [".atomsvc"],
  "application/vnd.antix.game-component": [".atx"],
  "audio/basic": [".au", ".snd"],
  "video/x-msvideo": [".avi"],
  "application/applixware": [".aw"],
  "application/vnd.airzip.filesecure.azf": [".azf"],
  "application/vnd.airzip.filesecure.azs": [".azs"],
  "application/vnd.amazon.ebook": [".azw"],
  "application/x-msdownload": [".bat", ".com", ".dll", ".exe", ".msi"],
  "application/x-bcpio": [".bcpio"],
  "application/x-font-bdf": [".bdf"],
  "application/vnd.syncml.dm+wbxml": [".bdm"],
  "application/vnd.fujitsu.oasysprs": [".bh2"],
  "application/vnd.bmi": [".bmi"],
  "image/bmp": [".bmp"],
  "application/vnd.framemaker": [".book", ".fm", ".frame", ".maker"],
  "application/vnd.previewsystems.box": [".box"],
  "application/x-bzip2": [".boz", ".bz2"],
  "image/prs.btif": [".btif"],
  "application/x-bzip": [".bz"],
  "text/x-c": [".c", ".cc", ".cpp", ".cxx", ".dic", ".h", ".hh"],
  "application/vnd.clonk.c4group": [".c4d", ".c4f", ".c4g", ".c4p", ".c4u"],
  "application/vnd.ms-cab-compressed": [".cab"],
  "application/vnd.curl.car": [".car"],
  "application/vnd.ms-pki.seccat": [".cat"],
  "application/x-director": [
    ".cct",
    ".cst",
    ".cxt",
    ".dcr",
    ".dir",
    ".dxr",
    ".fgd",
    ".swa",
    ".w3d"
  ],
  "application/ccxml+xml": [".ccxml"],
  "application/vnd.contact.cmsg": [".cdbcmsg"],
  "application/x-netcdf": [".cdf", ".nc"],
  "application/vnd.mediastation.cdkey": [".cdkey"],
  "chemical/x-cdx": [".cdx"],
  "application/vnd.chemdraw+xml": [".cdxml"],
  "application/vnd.cinderella": [".cdy"],
  "application/pkix-cert": [".cer"],
  "image/cgm": [".cgm"],
  "application/x-chat": [".chat"],
  "application/vnd.ms-htmlhelp": [".chm"],
  "application/vnd.kde.kchart": [".chrt"],
  "chemical/x-cif": [".cif"],
  "application/vnd.anser-web-certificate-issue-initiation": [".cii"],
  "application/vnd.ms-artgalry": [".cil"],
  "application/vnd.claymore": [".cla"],
  "application/java-vm": [".class"],
  "application/vnd.crick.clicker.keyboard": [".clkk"],
  "application/vnd.crick.clicker.palette": [".clkp"],
  "application/vnd.crick.clicker.template": [".clkt"],
  "application/vnd.crick.clicker.wordbank": [".clkw"],
  "application/vnd.crick.clicker": [".clkx"],
  "application/x-msclip": [".clp"],
  "application/vnd.cosmocaller": [".cmc"],
  "chemical/x-cmdf": [".cmdf"],
  "chemical/x-cml": [".cml"],
  "application/vnd.yellowriver-custom-menu": [".cmp"],
  "image/x-cmx": [".cmx"],
  "application/vnd.rim.cod": [".cod"],
  "text/plain": [
    ".conf",
    ".def",
    ".diff",
    ".in",
    ".ksh",
    ".list",
    ".log",
    ".pl",
    ".text",
    ".txt"
  ],
  "application/x-cpio": [".cpio"],
  "application/mac-compactpro": [".cpt"],
  "application/x-mscardfile": [".crd"],
  "application/pkix-crl": [".crl"],
  "application/x-x509-ca-cert": [".crt", ".der"],
  "application/x-csh": [".csh"],
  "chemical/x-csml": [".csml"],
  "application/vnd.commonspace": [".csp"],
  "text/css": [".css"],
  "text/csv": [".csv"],
  "application/cu-seeme": [".cu"],
  "text/vnd.curl": [".curl"],
  "application/prs.cww": [".cww"],
  "application/vnd.mobius.daf": [".daf"],
  "application/vnd.fdsn.seed": [".dataless", ".seed"],
  "application/davmount+xml": [".davmount"],
  "text/vnd.curl.dcurl": [".dcurl"],
  "application/vnd.oma.dd2+xml": [".dd2"],
  "application/vnd.fujixerox.ddd": [".ddd"],
  "application/x-debian-package": [".deb", ".udeb"],
  "application/vnd.dreamfactory": [".dfac"],
  "application/vnd.mobius.dis": [".dis"],
  "image/vnd.djvu": [".djv", ".djvu"],
  "application/vnd.dna": [".dna"],
  "application/msword": [".doc", ".dot", ".wiz"],
  "application/vnd.ms-word.document.macroenabled.12": [".docm"],
  "application/vnd.openxmlformats-officedocument.wordprocessingml.document": [
    ".docx"
  ],
  "application/vnd.ms-word.template.macroenabled.12": [".dotm"],
  "application/vnd.openxmlformats-officedocument.wordprocessingml.template": [
    ".dotx"
  ],
  "application/vnd.osgi.dp": [".dp"],
  "application/vnd.dpgraph": [".dpg"],
  "text/prs.lines.tag": [".dsc"],
  "application/x-dtbook+xml": [".dtb"],
  "application/xml-dtd": [".dtd"],
  "audio/vnd.dts": [".dts"],
  "audio/vnd.dts.hd": [".dtshd"],
  "application/x-dvi": [".dvi"],
  "model/vnd.dwf": [".dwf"],
  "image/vnd.dwg": [".dwg"],
  "image/vnd.dxf": [".dxf"],
  "application/vnd.spotfire.dxp": [".dxp"],
  "audio/vnd.nuera.ecelp4800": [".ecelp4800"],
  "audio/vnd.nuera.ecelp7470": [".ecelp7470"],
  "audio/vnd.nuera.ecelp9600": [".ecelp9600"],
  "application/ecmascript": [".ecma"],
  "application/vnd.novadigm.edm": [".edm"],
  "application/vnd.novadigm.edx": [".edx"],
  "application/vnd.picsel": [".efif"],
  "application/vnd.pg.osasli": [".ei6"],
  "message/rfc822": [".eml", ".mht", ".mhtml", ".mime", ".nws"],
  "application/emma+xml": [".emma"],
  "audio/vnd.digital-winds": [".eol"],
  "application/vnd.ms-fontobject": [".eot"],
  "application/epub+zip": [".epub"],
  "application/vnd.eszigno3+xml": [".es3", ".et3"],
  "application/vnd.epson.esf": [".esf"],
  "text/x-setext": [".etx"],
  "application/vnd.novadigm.ext": [".ext"],
  "application/andrew-inset": [".ez"],
  "application/vnd.ezpix-album": [".ez2"],
  "application/vnd.ezpix-package": [".ez3"],
  "text/x-fortran": [".f", ".f77", ".f90", ".for"],
  "video/x-f4v": [".f4v"],
  "image/vnd.fastbidsheet": [".fbs"],
  "application/vnd.fdf": [".fdf"],
  "application/vnd.denovo.fcselayout-link": [".fe_launch"],
  "application/vnd.fujitsu.oasysgp": [".fg5"],
  "image/x-freehand": [".fh", ".fh4", ".fh5", ".fh7", ".fhc"],
  "application/x-xfig": [".fig"],
  "video/x-fli": [".fli"],
  "application/vnd.micrografx.flo": [".flo"],
  "video/x-flv": [".flv"],
  "application/vnd.kde.kivio": [".flw"],
  "text/vnd.fmi.flexstor": [".flx"],
  "text/vnd.fly": [".fly"],
  "application/vnd.frogans.fnc": [".fnc"],
  "image/vnd.fpx": [".fpx"],
  "application/vnd.fsc.weblaunch": [".fsc"],
  "image/vnd.fst": [".fst"],
  "application/vnd.fluxtime.clip": [".ftc"],
  "application/vnd.anser-web-funds-transfer-initiation": [".fti"],
  "video/vnd.fvt": [".fvt"],
  "application/vnd.fuzzysheet": [".fzs"],
  "image/g3fax": [".g3"],
  "application/vnd.groove-account": [".gac"],
  "model/vnd.gdl": [".gdl"],
  "application/vnd.dynageo": [".geo"],
  "application/vnd.geometry-explorer": [".gex", ".gre"],
  "application/vnd.geogebra.file": [".ggb"],
  "application/vnd.geogebra.tool": [".ggt"],
  "application/vnd.groove-help": [".ghf"],
  "image/gif": [".gif"],
  "application/vnd.groove-identity-message": [".gim"],
  "application/vnd.gmx": [".gmx"],
  "application/x-gnumeric": [".gnumeric"],
  "application/vnd.flographit": [".gph"],
  "application/vnd.grafeq": [".gqf", ".gqs"],
  "application/srgs": [".gram"],
  "application/vnd.groove-injector": [".grv"],
  "application/srgs+xml": [".grxml"],
  "application/x-font-ghostscript": [".gsf"],
  "application/x-gtar": [".gtar"],
  "application/vnd.groove-tool-message": [".gtm"],
  "model/vnd.gtw": [".gtw"],
  "text/vnd.graphviz": [".gv"],
  "application/x-gzip": [".gz", ".tgz"],
  "video/h261": [".h261"],
  "video/h263": [".h263"],
  "video/h264": [".h264"],
  "application/vnd.hbci": [".hbci"],
  "application/x-hdf": [".hdf"],
  "application/winhlp": [".hlp"],
  "application/vnd.hp-hpgl": [".hpgl"],
  "application/vnd.hp-hpid": [".hpid"],
  "application/vnd.hp-hps": [".hps"],
  "application/mac-binhex40": [".hqx"],
  "application/vnd.kenameaapp": [".htke"],
  "text/html": [".htm", ".html"],
  "application/vnd.yamaha.hv-dic": [".hvd"],
  "application/vnd.yamaha.hv-voice": [".hvp"],
  "application/vnd.yamaha.hv-script": [".hvs"],
  "application/vnd.iccprofile": [".icc", ".icm"],
  "x-conference/x-cooltalk": [".ice"],
  "image/x-icon": [".ico"],
  "text/calendar": [".ics", ".ifb"],
  "image/ief": [".ief"],
  "application/vnd.shana.informed.formdata": [".ifm"],
  "model/iges": [".iges", ".igs"],
  "application/vnd.igloader": [".igl"],
  "application/vnd.micrografx.igx": [".igx"],
  "application/vnd.shana.informed.interchange": [".iif"],
  "application/vnd.accpac.simply.imp": [".imp"],
  "application/vnd.ms-ims": [".ims"],
  "application/vnd.shana.informed.package": [".ipk"],
  "application/vnd.ibm.rights-management": [".irm"],
  "application/vnd.irepository.package+xml": [".irp"],
  "application/vnd.shana.informed.formtemplate": [".itp"],
  "application/vnd.immervision-ivp": [".ivp"],
  "application/vnd.immervision-ivu": [".ivu"],
  "text/vnd.sun.j2me.app-descriptor": [".jad"],
  "application/vnd.jam": [".jam"],
  "application/java-archive": [".jar"],
  "text/x-java-source": [".java"],
  "application/vnd.jisp": [".jisp"],
  "application/vnd.hp-jlyt": [".jlt"],
  "application/x-java-jnlp-file": [".jnlp"],
  "application/vnd.joost.joda-archive": [".joda"],
  "image/jpeg": [".jpe", ".jpeg", ".jpg"],
  "video/jpm": [".jpgm", ".jpm"],
  "video/jpeg": [".jpgv"],
  "application/javascript": [".js"],
  "application/json": [".json"],
  "audio/midi": [".kar", ".mid", ".midi", ".rmi"],
  "application/vnd.kde.karbon": [".karbon"],
  "application/vnd.kde.kformula": [".kfo"],
  "application/vnd.kidspiration": [".kia"],
  "application/x-killustrator": [".kil"],
  "application/vnd.google-earth.kml+xml": [".kml"],
  "application/vnd.google-earth.kmz": [".kmz"],
  "application/vnd.kinar": [".kne", ".knp"],
  "application/vnd.kde.kontour": [".kon"],
  "application/vnd.kde.kpresenter": [".kpr", ".kpt"],
  "application/vnd.kde.kspread": [".ksp"],
  "application/vnd.kahootz": [".ktr", ".ktz"],
  "application/vnd.kde.kword": [".kwd", ".kwt"],
  "application/x-latex": [".latex"],
  "application/vnd.llamagraphics.life-balance.desktop": [".lbd"],
  "application/vnd.llamagraphics.life-balance.exchange+xml": [".lbe"],
  "application/vnd.hhe.lesson-player": [".les"],
  "application/vnd.route66.link66+xml": [".link66"],
  "application/lost+xml": [".lostxml"],
  "application/vnd.ms-lrm": [".lrm"],
  "application/vnd.frogans.ltf": [".ltf"],
  "audio/vnd.lucent.voice": [".lvp"],
  "application/vnd.lotus-wordpro": [".lwp"],
  "application/x-msmediaview": [".m13", ".m14", ".mvb"],
  "video/mpeg": [".m1v", ".m2v", ".mpa", ".mpe", ".mpeg", ".mpg"],
  "audio/mpeg": [".m2a", ".m3a", ".mp2", ".mp2a", ".mp3", ".mpga"],
  "audio/x-mpegurl": [".m3u"],
  "video/vnd.mpegurl": [".m4u", ".mxu"],
  "video/x-m4v": [".m4v"],
  "application/mathematica": [".ma", ".mb", ".nb"],
  "application/vnd.ecowin.chart": [".mag"],
  "text/troff": [".man", ".me", ".ms", ".roff", ".t", ".tr"],
  "application/mathml+xml": [".mathml"],
  "application/vnd.mobius.mbk": [".mbk"],
  "application/mbox": [".mbox"],
  "application/vnd.medcalcdata": [".mc1"],
  "application/vnd.mcd": [".mcd"],
  "text/vnd.curl.mcurl": [".mcurl"],
  "application/x-msaccess": [".mdb"],
  "image/vnd.ms-modi": [".mdi"],
  "model/mesh": [".mesh", ".msh", ".silo"],
  "application/vnd.mfmp": [".mfm"],
  "application/vnd.proteus.magazine": [".mgz"],
  "application/vnd.mif": [".mif"],
  "video/mj2": [".mj2", ".mjp2"],
  "application/vnd.dolby.mlp": [".mlp"],
  "application/vnd.chipnuts.karaoke-mmd": [".mmd"],
  "application/vnd.smaf": [".mmf"],
  "image/vnd.fujixerox.edmics-mmr": [".mmr"],
  "application/x-msmoney": [".mny"],
  "application/x-mobipocket-ebook": [".mobi", ".prc"],
  "video/quicktime": [".mov", ".qt"],
  "video/x-sgi-movie": [".movie"],
  "video/mp4": [".mp4", ".mp4v", ".mpg4"],
  "audio/mp4": [".mp4a"],
  "application/mp4": [".mp4s"],
  "application/vnd.mophun.certificate": [".mpc"],
  "application/vnd.apple.installer+xml": [".mpkg"],
  "application/vnd.blueice.multipass": [".mpm"],
  "application/vnd.mophun.application": [".mpn"],
  "application/vnd.ms-project": [".mpp", ".mpt"],
  "application/vnd.ibm.minipay": [".mpy"],
  "application/vnd.mobius.mqy": [".mqy"],
  "application/marc": [".mrc"],
  "application/mediaservercontrol+xml": [".mscml"],
  "application/vnd.fdsn.mseed": [".mseed"],
  "application/vnd.mseq": [".mseq"],
  "application/vnd.epson.msf": [".msf"],
  "application/vnd.mobius.msl": [".msl"],
  "application/vnd.muvee.style": [".msty"],
  "model/vnd.mts": [".mts"],
  "application/vnd.musician": [".mus"],
  "application/vnd.recordare.musicxml+xml": [".musicxml"],
  "application/vnd.mfer": [".mwf"],
  "application/mxf": [".mxf"],
  "application/vnd.recordare.musicxml": [".mxl"],
  "application/xv+xml": [".mxml", ".xhvml", ".xvm", ".xvml"],
  "application/vnd.triscape.mxs": [".mxs"],
  "application/vnd.nokia.n-gage.symbian.install": [".n-gage"],
  "application/x-dtbncx+xml": [".ncx"],
  "application/vnd.nokia.n-gage.data": [".ngdat"],
  "application/vnd.neurolanguage.nlu": [".nlu"],
  "application/vnd.enliven": [".nml"],
  "application/vnd.noblenet-directory": [".nnd"],
  "application/vnd.noblenet-sealer": [".nns"],
  "application/vnd.noblenet-web": [".nnw"],
  "image/vnd.net-fpx": [".npx"],
  "application/vnd.lotus-notes": [".nsf"],
  "application/vnd.fujitsu.oasys2": [".oa2"],
  "application/vnd.fujitsu.oasys3": [".oa3"],
  "application/vnd.fujitsu.oasys": [".oas"],
  "application/x-msbinder": [".obd"],
  "application/oda": [".oda"],
  "application/vnd.oasis.opendocument.database": [".odb"],
  "application/vnd.oasis.opendocument.chart": [".odc"],
  "application/vnd.oasis.opendocument.formula": [".odf"],
  "application/vnd.oasis.opendocument.formula-template": [".odft"],
  "application/vnd.oasis.opendocument.graphics": [".odg"],
  "application/vnd.oasis.opendocument.image": [".odi"],
  "application/vnd.oasis.opendocument.presentation": [".odp"],
  "application/vnd.oasis.opendocument.spreadsheet": [".ods"],
  "application/vnd.oasis.opendocument.text": [".odt"],
  "audio/ogg": [".oga", ".ogg", ".spx"],
  "video/ogg": [".ogv"],
  "application/ogg": [".ogx"],
  "application/onenote": [".onepkg", ".onetmp", ".onetoc", ".onetoc2"],
  "application/oebps-package+xml": [".opf"],
  "application/vnd.palm": [".oprc", ".pdb", ".pqa"],
  "application/vnd.lotus-organizer": [".org"],
  "application/vnd.yamaha.openscoreformat": [".osf"],
  "application/vnd.yamaha.openscoreformat.osfpvg+xml": [".osfpvg"],
  "application/vnd.oasis.opendocument.chart-template": [".otc"],
  "application/x-font-otf": [".otf"],
  "application/vnd.oasis.opendocument.graphics-template": [".otg"],
  "application/vnd.oasis.opendocument.text-web": [".oth"],
  "application/vnd.oasis.opendocument.image-template": [".oti"],
  "application/vnd.oasis.opendocument.text-master": [".otm"],
  "application/vnd.oasis.opendocument.presentation-template": [".otp"],
  "application/vnd.oasis.opendocument.spreadsheet-template": [".ots"],
  "application/vnd.oasis.opendocument.text-template": [".ott"],
  "application/vnd.openofficeorg.extension": [".oxt"],
  "text/x-pascal": [".p", ".pas"],
  "application/pkcs10": [".p10"],
  "application/x-pkcs12": [".p12", ".pfx"],
  "application/x-pkcs7-certificates": [".p7b", ".spc"],
  "application/pkcs7-mime": [".p7c", ".p7m"],
  "application/x-pkcs7-certreqresp": [".p7r"],
  "application/pkcs7-signature": [".p7s"],
  "application/vnd.powerbuilder6": [".pbd"],
  "image/x-portable-bitmap": [".pbm"],
  "application/x-font-pcf": [".pcf"],
  "application/vnd.hp-pcl": [".pcl"],
  "application/vnd.hp-pclxl": [".pclxl"],
  "image/x-pict": [".pct", ".pic"],
  "application/vnd.curl.pcurl": [".pcurl"],
  "image/x-pcx": [".pcx"],
  "application/pdf": [".pdf"],
  "application/font-tdpfr": [".pfr"],
  "image/x-portable-graymap": [".pgm"],
  "application/x-chess-pgn": [".pgn"],
  "application/pgp-encrypted": [".pgp"],
  "application/pkixcmp": [".pki"],
  "application/pkix-pkipath": [".pkipath"],
  "application/vnd.3gpp.pic-bw-large": [".plb"],
  "application/vnd.mobius.plc": [".plc"],
  "application/vnd.pocketlearn": [".plf"],
  "application/pls+xml": [".pls"],
  "application/vnd.ctc-posml": [".pml"],
  "image/png": [".png"],
  "image/x-portable-anymap": [".pnm"],
  "application/vnd.macports.portpkg": [".portpkg"],
  "application/vnd.ms-powerpoint": [".pot", ".ppa", ".pps", ".ppt", ".pwz"],
  "application/vnd.ms-powerpoint.template.macroenabled.12": [".potm"],
  "application/vnd.openxmlformats-officedocument.presentationml.template": [
    ".potx"
  ],
  "application/vnd.ms-powerpoint.addin.macroenabled.12": [".ppam"],
  "application/vnd.cups-ppd": [".ppd"],
  "image/x-portable-pixmap": [".ppm"],
  "application/vnd.ms-powerpoint.slideshow.macroenabled.12": [".ppsm"],
  "application/vnd.openxmlformats-officedocument.presentationml.slideshow": [
    ".ppsx"
  ],
  "application/vnd.ms-powerpoint.presentation.macroenabled.12": [".pptm"],
  "application/vnd.openxmlformats-officedocument.presentationml.presentation": [
    ".pptx"
  ],
  "application/vnd.lotus-freelance": [".pre"],
  "application/pics-rules": [".prf"],
  "application/vnd.3gpp.pic-bw-small": [".psb"],
  "image/vnd.adobe.photoshop": [".psd"],
  "application/x-font-linux-psf": [".psf"],
  "application/vnd.pvi.ptid1": [".ptid"],
  "application/x-mspublisher": [".pub"],
  "application/vnd.3gpp.pic-bw-var": [".pvb"],
  "application/vnd.3m.post-it-notes": [".pwn"],
  "text/x-python": [".py"],
  "audio/vnd.ms-playready.media.pya": [".pya"],
  "application/x-python-code": [".pyc", ".pyo"],
  "video/vnd.ms-playready.media.pyv": [".pyv"],
  "application/vnd.epson.quickanime": [".qam"],
  "application/vnd.intu.qbo": [".qbo"],
  "application/vnd.intu.qfx": [".qfx"],
  "application/vnd.publishare-delta-tree": [".qps"],
  "application/vnd.quark.quarkxpress": [
    ".qwd",
    ".qwt",
    ".qxb",
    ".qxd",
    ".qxl",
    ".qxt"
  ],
  "audio/x-pn-realaudio": [".ra", ".ram"],
  "application/x-rar-compressed": [".rar"],
  "image/x-cmu-raster": [".ras"],
  "application/vnd.ipunplugged.rcprofile": [".rcprofile"],
  "application/rdf+xml": [".rdf"],
  "application/vnd.data-vision.rdz": [".rdz"],
  "application/vnd.businessobjects": [".rep"],
  "application/x-dtbresource+xml": [".res"],
  "image/x-rgb": [".rgb"],
  "application/reginfo+xml": [".rif"],
  "application/resource-lists+xml": [".rl"],
  "image/vnd.fujixerox.edmics-rlc": [".rlc"],
  "application/resource-lists-diff+xml": [".rld"],
  "application/vnd.rn-realmedia": [".rm"],
  "audio/x-pn-realaudio-plugin": [".rmp"],
  "application/vnd.jcp.javame.midlet-rms": [".rms"],
  "application/relax-ng-compact-syntax": [".rnc"],
  "application/x-rpm": [".rpm"],
  "application/vnd.nokia.radio-presets": [".rpss"],
  "application/vnd.nokia.radio-preset": [".rpst"],
  "application/sparql-query": [".rq"],
  "application/rls-services+xml": [".rs"],
  "application/rsd+xml": [".rsd"],
  "application/rss+xml": [".rss"],
  "application/rtf": [".rtf"],
  "text/richtext": [".rtx"],
  "application/vnd.yamaha.smaf-audio": [".saf"],
  "application/sbml+xml": [".sbml"],
  "application/vnd.ibm.secure-container": [".sc"],
  "application/x-msschedule": [".scd"],
  "application/vnd.lotus-screencam": [".scm"],
  "application/scvp-cv-request": [".scq"],
  "application/scvp-cv-response": [".scs"],
  "text/vnd.curl.scurl": [".scurl"],
  "application/vnd.stardivision.draw": [".sda"],
  "application/vnd.stardivision.calc": [".sdc"],
  "application/vnd.stardivision.impress": [".sdd"],
  "application/vnd.solent.sdkm+xml": [".sdkd", ".sdkm"],
  "application/sdp": [".sdp"],
  "application/vnd.stardivision.writer": [".sdw", ".vor"],
  "application/vnd.seemail": [".see"],
  "application/vnd.sema": [".sema"],
  "application/vnd.semd": [".semd"],
  "application/vnd.semf": [".semf"],
  "application/java-serialized-object": [".ser"],
  "application/set-payment-initiation": [".setpay"],
  "application/set-registration-initiation": [".setreg"],
  "application/vnd.hydrostatix.sof-data": [".sfd-hdstx"],
  "application/vnd.spotfire.sfs": [".sfs"],
  "application/vnd.stardivision.writer-global": [".sgl"],
  "text/sgml": [".sgm", ".sgml"],
  "application/x-sh": [".sh"],
  "application/x-shar": [".shar"],
  "application/shf+xml": [".shf"],
  "text/vnd.wap.si": [".si"],
  "application/vnd.wap.sic": [".sic"],
  "application/vnd.symbian.install": [".sis", ".sisx"],
  "application/x-stuffit": [".sit"],
  "application/x-stuffitx": [".sitx"],
  "application/vnd.koan": [".skd", ".skm", ".skp", ".skt"],
  "text/vnd.wap.sl": [".sl"],
  "application/vnd.wap.slc": [".slc"],
  "application/vnd.ms-powerpoint.slide.macroenabled.12": [".sldm"],
  "application/vnd.openxmlformats-officedocument.presentationml.slide": [
    ".sldx"
  ],
  "application/vnd.epson.salt": [".slt"],
  "application/vnd.stardivision.math": [".smf"],
  "application/smil+xml": [".smi", ".smil"],
  "application/x-font-snf": [".snf"],
  "application/vnd.yamaha.smaf-phrase": [".spf"],
  "application/x-futuresplash": [".spl"],
  "text/vnd.in3d.spot": [".spot"],
  "application/scvp-vp-response": [".spp"],
  "application/scvp-vp-request": [".spq"],
  "application/x-wais-source": [".src"],
  "application/sparql-results+xml": [".srx"],
  "application/vnd.kodak-descriptor": [".sse"],
  "application/vnd.epson.ssf": [".ssf"],
  "application/ssml+xml": [".ssml"],
  "application/vnd.sun.xml.calc.template": [".stc"],
  "application/vnd.sun.xml.draw.template": [".std"],
  "application/vnd.wt.stf": [".stf"],
  "application/vnd.sun.xml.impress.template": [".sti"],
  "application/hyperstudio": [".stk"],
  "application/vnd.ms-pki.stl": [".stl"],
  "application/vnd.pg.format": [".str"],
  "application/vnd.sun.xml.writer.template": [".stw"],
  "application/vnd.sus-calendar": [".sus", ".susp"],
  "application/x-sv4cpio": [".sv4cpio"],
  "application/x-sv4crc": [".sv4crc"],
  "application/vnd.svd": [".svd"],
  "image/svg+xml": [".svg", ".svgz"],
  "application/x-shockwave-flash": [".swf"],
  "application/vnd.arastra.swi": [".swi"],
  "application/vnd.sun.xml.calc": [".sxc"],
  "application/vnd.sun.xml.draw": [".sxd"],
  "application/vnd.sun.xml.writer.global": [".sxg"],
  "application/vnd.sun.xml.impress": [".sxi"],
  "application/vnd.sun.xml.math": [".sxm"],
  "application/vnd.sun.xml.writer": [".sxw"],
  "application/vnd.tao.intent-module-archive": [".tao"],
  "application/x-tar": [".tar"],
  "application/vnd.3gpp2.tcap": [".tcap"],
  "application/x-tcl": [".tcl"],
  "application/vnd.smart.teacher": [".teacher"],
  "application/x-tex": [".tex"],
  "application/x-texinfo": [".texi", ".texinfo"],
  "application/x-tex-tfm": [".tfm"],
  "image/tiff": [".tif", ".tiff"],
  "application/vnd.tmobile-livetv": [".tmo"],
  "application/x-bittorrent": [".torrent"],
  "application/vnd.groove-tool-template": [".tpl"],
  "application/vnd.trid.tpt": [".tpt"],
  "application/vnd.trueapp": [".tra"],
  "application/x-msterminal": [".trm"],
  "text/tab-separated-values": [".tsv"],
  "application/x-font-ttf": [".ttc", ".ttf"],
  "application/vnd.simtech-mindmapper": [".twd", ".twds"],
  "application/vnd.genomatix.tuxedo": [".txd"],
  "application/vnd.mobius.txf": [".txf"],
  "application/vnd.ufdl": [".ufd", ".ufdl"],
  "application/vnd.umajin": [".umj"],
  "application/vnd.unity": [".unityweb"],
  "application/vnd.uoml+xml": [".uoml"],
  "text/uri-list": [".uri", ".uris", ".urls"],
  "application/x-ustar": [".ustar"],
  "application/vnd.uiq.theme": [".utz"],
  "text/x-uuencode": [".uu"],
  "application/x-cdlink": [".vcd"],
  "text/x-vcard": [".vcf"],
  "application/vnd.groove-vcard": [".vcg"],
  "text/x-vcalendar": [".vcs"],
  "application/vnd.vcx": [".vcx"],
  "application/vnd.visionary": [".vis"],
  "video/vnd.vivo": [".viv"],
  "model/vrml": [".vrml", ".wrl"],
  "application/vnd.visio": [".vsd", ".vss", ".vst", ".vsw"],
  "application/vnd.vsf": [".vsf"],
  "model/vnd.vtu": [".vtu"],
  "application/voicexml+xml": [".vxml"],
  "application/x-doom": [".wad"],
  "audio/x-wav": [".wav"],
  "audio/x-ms-wax": [".wax"],
  "image/vnd.wap.wbmp": [".wbmp"],
  "application/vnd.criticaltools.wbs+xml": [".wbs"],
  "application/vnd.wap.wbxml": [".wbxml"],
  "application/vnd.ms-works": [".wcm", ".wdb", ".wks", ".wps"],
  "video/x-ms-wm": [".wm"],
  "audio/x-ms-wma": [".wma"],
  "application/x-ms-wmd": [".wmd"],
  "application/x-msmetafile": [".wmf"],
  "text/vnd.wap.wml": [".wml"],
  "application/vnd.wap.wmlc": [".wmlc"],
  "text/vnd.wap.wmlscript": [".wmls"],
  "application/vnd.wap.wmlscriptc": [".wmlsc"],
  "video/x-ms-wmv": [".wmv"],
  "video/x-ms-wmx": [".wmx"],
  "application/x-ms-wmz": [".wmz"],
  "application/vnd.wordperfect": [".wpd"],
  "application/vnd.ms-wpl": [".wpl"],
  "application/vnd.wqd": [".wqd"],
  "application/x-mswrite": [".wri"],
  "application/wsdl+xml": [".wsdl"],
  "application/wspolicy+xml": [".wspolicy"],
  "application/vnd.webturbo": [".wtb"],
  "video/x-ms-wvx": [".wvx"],
  "application/vnd.hzn-3d-crossword": [".x3d"],
  "application/x-silverlight-app": [".xap"],
  "application/vnd.xara": [".xar"],
  "application/x-ms-xbap": [".xbap"],
  "application/vnd.fujixerox.docuworks.binder": [".xbd"],
  "image/x-xbitmap": [".xbm"],
  "application/vnd.syncml.dm+xml": [".xdm"],
  "application/vnd.adobe.xdp+xml": [".xdp"],
  "application/vnd.fujixerox.docuworks": [".xdw"],
  "application/xenc+xml": [".xenc"],
  "application/patch-ops-error+xml": [".xer"],
  "application/vnd.adobe.xfdf": [".xfdf"],
  "application/vnd.xfdl": [".xfdl"],
  "application/xhtml+xml": [".xht", ".xhtml"],
  "image/vnd.xiff": [".xif"],
  "application/vnd.ms-excel": [
    ".xla",
    ".xlb",
    ".xlc",
    ".xlm",
    ".xls",
    ".xlt",
    ".xlw"
  ],
  "application/vnd.ms-excel.addin.macroenabled.12": [".xlam"],
  "application/vnd.ms-excel.sheet.binary.macroenabled.12": [".xlsb"],
  "application/vnd.ms-excel.sheet.macroenabled.12": [".xlsm"],
  "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet": [
    ".xlsx"
  ],
  "application/vnd.ms-excel.template.macroenabled.12": [".xltm"],
  "application/vnd.openxmlformats-officedocument.spreadsheetml.template": [
    ".xltx"
  ],
  "application/xml": [".xml", ".xpdl", ".xsl"],
  "application/vnd.olpc-sugar": [".xo"],
  "application/xop+xml": [".xop"],
  "application/x-xpinstall": [".xpi"],
  "image/x-xpixmap": [".xpm"],
  "application/vnd.is-xpr": [".xpr"],
  "application/vnd.ms-xpsdocument": [".xps"],
  "application/vnd.intercon.formnet": [".xpw", ".xpx"],
  "application/xslt+xml": [".xslt"],
  "application/vnd.syncml+xml": [".xsm"],
  "application/xspf+xml": [".xspf"],
  "application/vnd.mozilla.xul+xml": [".xul"],
  "image/x-xwindowdump": [".xwd"],
  "chemical/x-xyz": [".xyz"],
  "application/vnd.zzazz.deck+xml": [".zaz"],
  "application/zip": [".zip"],
  "application/vnd.zul": [".zir", ".zirz"],
  "application/vnd.handheld-entertainment+xml": [".zmm"]
}

Thanks for this

Thanks mate