What is a correct MIME type for docx pptx etc

Question

For older   doc documents  this was enough  header  quot Content-Type  application msword quot     What MIME type should I use for new  docx documents  Also  for pptx and xlsx documents

User · Answer

Alternatively  if you re working in  NET v4 5 or above  try using System Web MimeMapping GetMimeMapping yourFileName  to get MIME types  It is much better than hard-coding strings

User · Answer

In case anyone wants the answer of Dirk Vollmar in a C  switch statement   case  doc   return  application msword   case  dot   return  application msword   case  docx   return  application vnd openxmlformats-officedocument wordprocessingml document   case  dotx   return  application vnd openxmlformats-officedocument wordprocessingml template   case  docm   return  application vnd ms-word document macroEnabled 12   case  dotm   return  application vnd ms-word template macroEnabled 12   case  xls   return  application vnd ms-excel   case  xlt   return  application vnd ms-excel   case  xla   return  application vnd ms-excel   case  xlsx   return  application vnd openxmlformats-officedocument spreadsheetml sheet   case  xltx   return  application vnd openxmlformats-officedocument spreadsheetml template   case  xlsm   return  application vnd ms-excel sheet macroEnabled 12   case  xltm   return  application vnd ms-excel template macroEnabled 12   case  xlam   return  application vnd ms-excel addin macroEnabled 12   case  xlsb   return  application vnd ms-excel sheet binary macroEnabled 12   case  ppt   return  application vnd ms-powerpoint   case  pot   return  application vnd ms-powerpoint   case  pps   return  application vnd ms-powerpoint   case  ppa   return  application vnd ms-powerpoint   case  pptx   return  application vnd openxmlformats-officedocument presentationml presentation   case  potx   return  application vnd openxmlformats-officedocument presentationml template   case  ppsx   return  application vnd openxmlformats-officedocument presentationml slideshow   case  ppam   return  application vnd ms-powerpoint addin macroEnabled 12   case  pptm   return  application vnd ms-powerpoint presentation macroEnabled 12   case  potm   return  application vnd ms-powerpoint template macroEnabled 12   case  ppsm   return  application vnd ms-powerpoint slideshow macroEnabled 12   case  mdb   return  application vnd ms-access

User · Answer

Just look at MDN Web Docs   Here is a list of MIME types  associated by type of documents  ordered by their common extensions   Common MIME types

User · Answer

Swift4  func mimeTypeForPath path  String  - gt  String           let url   NSURL fileURLWithPath  path          let pathExtension   url pathExtension          if let uti   UTTypeCreatePreferredIdentifierForTag kUTTagClassFilenameExtension  pathExtension  as NSString  nil   takeRetainedValue                 if let mimetype   UTTypeCopyPreferredTagWithClass uti  kUTTagClassMIMEType   takeRetainedValue                     return mimetype as String                                 return  quot application octet-stream quot

User · Answer

A working method in android to populates the mapping list mime types   private static void fileMimeTypeMapping          MIMETYPE MAPPING put  3gp   Collections list  video 3gpp          MIMETYPE MAPPING put  7z   Collections list  application x-7z-compressed          MIMETYPE MAPPING put  accdb   Collections list  application msaccess          MIMETYPE MAPPING put  ai   Collections list  application illustrator          MIMETYPE MAPPING put  apk   Collections list  application vnd android package-archive          MIMETYPE MAPPING put  arw   Collections list  image x-dcraw          MIMETYPE MAPPING put  avi   Collections list  video x-msvideo          MIMETYPE MAPPING put  bash   Collections list  text x-shellscript          MIMETYPE MAPPING put  bat   Collections list  application x-msdos-program          MIMETYPE MAPPING put  blend   Collections list  application x-blender          MIMETYPE MAPPING put  bin   Collections list  application x-bin          MIMETYPE MAPPING put  bmp   Collections list  image bmp          MIMETYPE MAPPING put  bpg   Collections list  image bpg          MIMETYPE MAPPING put  bz2   Collections list  application x-bzip2          MIMETYPE MAPPING put  cb7   Collections list  application x-cbr          MIMETYPE MAPPING put  cba   Collections list  application x-cbr          MIMETYPE MAPPING put  cbr   Collections list  application x-cbr          MIMETYPE MAPPING put  cbt   Collections list  application x-cbr          MIMETYPE MAPPING put  cbtc   Collections list  application x-cbr          MIMETYPE MAPPING put  cbz   Collections list  application x-cbr          MIMETYPE MAPPING put  cc   Collections list  text x-c          MIMETYPE MAPPING put  cdr   Collections list  application coreldraw          MIMETYPE MAPPING put  class   Collections list  application java          MIMETYPE MAPPING put  cnf   Collections list  text plain          MIMETYPE MAPPING put  conf   Collections list  text plain          MIMETYPE MAPPING put  cpp   Collections list  text x-c  src          MIMETYPE MAPPING put  cr2   Collections list  image x-dcraw          MIMETYPE MAPPING put  css   Collections list  text css          MIMETYPE MAPPING put  csv   Collections list  text csv          MIMETYPE MAPPING put  cvbdl   Collections list  application x-cbr          MIMETYPE MAPPING put  c   Collections list  text x-c          MIMETYPE MAPPING put  c     Collections list  text x-c  src          MIMETYPE MAPPING put  dcr   Collections list  image x-dcraw          MIMETYPE MAPPING put  deb   Collections list  application x-deb          MIMETYPE MAPPING put  dng   Collections list  image x-dcraw          MIMETYPE MAPPING put  doc   Collections list  application msword          MIMETYPE MAPPING put  docm   Collections list  application vnd ms-word document macroEnabled 12          MIMETYPE MAPPING put  docx   Collections list  application vnd openxmlformats-officedocument wordprocessingml document          MIMETYPE MAPPING put  dot   Collections list  application msword          MIMETYPE MAPPING put  dotx   Collections list  application vnd openxmlformats-officedocument wordprocessingml template          MIMETYPE MAPPING put  dv   Collections list  video dv          MIMETYPE MAPPING put  eot   Collections list  application vnd ms-fontobject          MIMETYPE MAPPING put  epub   Collections list  application epub zip          MIMETYPE MAPPING put  eps   Collections list  application postscript          MIMETYPE MAPPING put  erf   Collections list  image x-dcraw          MIMETYPE MAPPING put  exe   Collections list  application x-ms-dos-executable          MIMETYPE MAPPING put  flac   Collections list  audio flac          MIMETYPE MAPPING put  flv   Collections list  video x-flv          MIMETYPE MAPPING put  gif   Collections list  image gif          MIMETYPE MAPPING put  gpx   Collections list  application gpx xml          MIMETYPE MAPPING put  gz   Collections list  application gzip          MIMETYPE MAPPING put  gzip   Collections list  application gzip          MIMETYPE MAPPING put  h   Collections list  text x-h          MIMETYPE MAPPING put  heic   Collections list  image heic          MIMETYPE MAPPING put  heif   Collections list  image heif          MIMETYPE MAPPING put  hh   Collections list  text x-h          MIMETYPE MAPPING put  hpp   Collections list  text x-h          MIMETYPE MAPPING put  htaccess   Collections list  text plain          MIMETYPE MAPPING put  ical   Collections list  text calendar          MIMETYPE MAPPING put  ics   Collections list  text calendar          MIMETYPE MAPPING put  iiq   Collections list  image x-dcraw          MIMETYPE MAPPING put  impress   Collections list  text impress          MIMETYPE MAPPING put  java   Collections list  text x-java-source          MIMETYPE MAPPING put  jp2   Collections list  image jp2          MIMETYPE MAPPING put  jpeg   Collections list  image jpeg          MIMETYPE MAPPING put  jpg   Collections list  image jpeg          MIMETYPE MAPPING put  jps   Collections list  image jpeg          MIMETYPE MAPPING put  k25   Collections list  image x-dcraw          MIMETYPE MAPPING put  kdc   Collections list  image x-dcraw          MIMETYPE MAPPING put  key   Collections list  application x-iwork-keynote-sffkey          MIMETYPE MAPPING put  keynote   Collections list  application x-iwork-keynote-sffkey          MIMETYPE MAPPING put  kml   Collections list  application vnd google-earth kml xml          MIMETYPE MAPPING put  kmz   Collections list  application vnd google-earth kmz          MIMETYPE MAPPING put  kra   Collections list  application x-krita          MIMETYPE MAPPING put  ldif   Collections list  text x-ldif          MIMETYPE MAPPING put  love   Collections list  application x-love-game          MIMETYPE MAPPING put  lwp   Collections list  application vnd lotus-wordpro          MIMETYPE MAPPING put  m2t   Collections list  video mp2t          MIMETYPE MAPPING put  m3u   Collections list  audio mpegurl          MIMETYPE MAPPING put  m3u8   Collections list  audio mpegurl          MIMETYPE MAPPING put  m4a   Collections list  audio mp4          MIMETYPE MAPPING put  m4b   Collections list  audio m4b          MIMETYPE MAPPING put  m4v   Collections list  video mp4          MIMETYPE MAPPING put  markdown   Collections list MIMETYPE TEXT MARKDOWN         MIMETYPE MAPPING put  mdown   Collections list MIMETYPE TEXT MARKDOWN         MIMETYPE MAPPING put  md   Collections list MIMETYPE TEXT MARKDOWN         MIMETYPE MAPPING put  mdb   Collections list  application msaccess          MIMETYPE MAPPING put  mdwn   Collections list MIMETYPE TEXT MARKDOWN         MIMETYPE MAPPING put  mkd   Collections list MIMETYPE TEXT MARKDOWN         MIMETYPE MAPPING put  mef   Collections list  image x-dcraw          MIMETYPE MAPPING put  mkv   Collections list  video x-matroska          MIMETYPE MAPPING put  mobi   Collections list  application x-mobipocket-ebook          MIMETYPE MAPPING put  mov   Collections list  video quicktime          MIMETYPE MAPPING put  mp3   Collections list  audio mpeg          MIMETYPE MAPPING put  mp4   Collections list  video mp4          MIMETYPE MAPPING put  mpeg   Collections list  video mpeg          MIMETYPE MAPPING put  mpg   Collections list  video mpeg          MIMETYPE MAPPING put  mpo   Collections list  image jpeg          MIMETYPE MAPPING put  msi   Collections list  application x-msi          MIMETYPE MAPPING put  mts   Collections list  video MP2T          MIMETYPE MAPPING put  mt2s   Collections list  video MP2T          MIMETYPE MAPPING put  nef   Collections list  image x-dcraw          MIMETYPE MAPPING put  numbers   Collections list  application x-iwork-numbers-sffnumbers          MIMETYPE MAPPING put  odf   Collections list  application vnd oasis opendocument formula          MIMETYPE MAPPING put  odg   Collections list  application vnd oasis opendocument graphics          MIMETYPE MAPPING put  odp   Collections list  application vnd oasis opendocument presentation          MIMETYPE MAPPING put  ods   Collections list  application vnd oasis opendocument spreadsheet          MIMETYPE MAPPING put  odt   Collections list  application vnd oasis opendocument text          MIMETYPE MAPPING put  oga   Collections list  audio ogg          MIMETYPE MAPPING put  ogg   Collections list  audio ogg          MIMETYPE MAPPING put  ogv   Collections list  video ogg          MIMETYPE MAPPING put  one   Collections list  application msonenote          MIMETYPE MAPPING put  opus   Collections list  audio ogg          MIMETYPE MAPPING put  orf   Collections list  image x-dcraw          MIMETYPE MAPPING put  otf   Collections list  application font-sfnt          MIMETYPE MAPPING put  pages   Collections list  application x-iwork-pages-sffpages          MIMETYPE MAPPING put  pdf   Collections list  application pdf          MIMETYPE MAPPING put  pfb   Collections list  application x-font          MIMETYPE MAPPING put  pef   Collections list  image x-dcraw          MIMETYPE MAPPING put  php   Collections list  application x-php          MIMETYPE MAPPING put  pl   Collections list  application x-perl          MIMETYPE MAPPING put  pls   Collections list  audio x-scpls          MIMETYPE MAPPING put  png   Collections list  image png          MIMETYPE MAPPING put  pot   Collections list  application vnd ms-powerpoint          MIMETYPE MAPPING put  potm   Collections list  application vnd ms-powerpoint template macroEnabled 12          MIMETYPE MAPPING put  potx   Collections list  application vnd openxmlformats-officedocument presentationml template          MIMETYPE MAPPING put  ppa   Collections list  application vnd ms-powerpoint          MIMETYPE MAPPING put  ppam   Collections list  application vnd ms-powerpoint addin macroEnabled 12          MIMETYPE MAPPING put  pps   Collections list  application vnd ms-powerpoint          MIMETYPE MAPPING put  ppsm   Collections list  application vnd ms-powerpoint slideshow macroEnabled 12          MIMETYPE MAPPING put  ppsx   Collections list  application vnd openxmlformats-officedocument presentationml slideshow          MIMETYPE MAPPING put  ppt   Collections list  application vnd ms-powerpoint          MIMETYPE MAPPING put  pptm   Collections list  application vnd ms-powerpoint presentation macroEnabled 12          MIMETYPE MAPPING put  pptx   Collections list  application vnd openxmlformats-officedocument presentationml presentation          MIMETYPE MAPPING put  ps   Collections list  application postscript          MIMETYPE MAPPING put  psd   Collections list  application x-photoshop          MIMETYPE MAPPING put  py   Collections list  text x-python          MIMETYPE MAPPING put  raf   Collections list  image x-dcraw          MIMETYPE MAPPING put  rar   Collections list  application x-rar-compressed          MIMETYPE MAPPING put  reveal   Collections list  text reveal          MIMETYPE MAPPING put  rss   Collections list  application rss xml          MIMETYPE MAPPING put  rtf   Collections list  application rtf          MIMETYPE MAPPING put  rw2   Collections list  image x-dcraw          MIMETYPE MAPPING put  schema   Collections list  text plain          MIMETYPE MAPPING put  sgf   Collections list  application sgf          MIMETYPE MAPPING put  sh-lib   Collections list  text x-shellscript          MIMETYPE MAPPING put  sh   Collections list  text x-shellscript          MIMETYPE MAPPING put  srf   Collections list  image x-dcraw          MIMETYPE MAPPING put  sr2   Collections list  image x-dcraw          MIMETYPE MAPPING put  tar   Collections list  application x-tar          MIMETYPE MAPPING put  tar bz2   Collections list  application x-bzip2          MIMETYPE MAPPING put  tar gz   Collections list  application x-compressed          MIMETYPE MAPPING put  tbz2   Collections list  application x-bzip2          MIMETYPE MAPPING put  tcx   Collections list  application vnd garmin tcx xml          MIMETYPE MAPPING put  tex   Collections list  application x-tex          MIMETYPE MAPPING put  tgz   Collections list  application x-compressed          MIMETYPE MAPPING put  tiff   Collections list  image tiff          MIMETYPE MAPPING put  tif   Collections list  image tiff          MIMETYPE MAPPING put  ttf   Collections list  application font-sfnt          MIMETYPE MAPPING put  txt   Collections list  text plain          MIMETYPE MAPPING put  vcard   Collections list  text vcard          MIMETYPE MAPPING put  vcf   Collections list  text vcard          MIMETYPE MAPPING put  vob   Collections list  video dvd          MIMETYPE MAPPING put  vsd   Collections list  application vnd visio          MIMETYPE MAPPING put  vsdm   Collections list  application vnd ms-visio drawing macroEnabled 12          MIMETYPE MAPPING put  vsdx   Collections list  application vnd ms-visio drawing          MIMETYPE MAPPING put  vssm   Collections list  application vnd ms-visio stencil macroEnabled 12          MIMETYPE MAPPING put  vssx   Collections list  application vnd ms-visio stencil          MIMETYPE MAPPING put  vstm   Collections list  application vnd ms-visio template macroEnabled 12          MIMETYPE MAPPING put  vstx   Collections list  application vnd ms-visio template          MIMETYPE MAPPING put  wav   Collections list  audio wav          MIMETYPE MAPPING put  webm   Collections list  video webm          MIMETYPE MAPPING put  woff   Collections list  application font-woff          MIMETYPE MAPPING put  wpd   Collections list  application vnd wordperfect          MIMETYPE MAPPING put  wmv   Collections list  video x-ms-wmv          MIMETYPE MAPPING put  xcf   Collections list  application x-gimp          MIMETYPE MAPPING put  xla   Collections list  application vnd ms-excel          MIMETYPE MAPPING put  xlam   Collections list  application vnd ms-excel addin macroEnabled 12          MIMETYPE MAPPING put  xls   Collections list  application vnd ms-excel          MIMETYPE MAPPING put  xlsb   Collections list  application vnd ms-excel sheet binary macroEnabled 12          MIMETYPE MAPPING put  xlsm   Collections list  application vnd ms-excel sheet macroEnabled 12          MIMETYPE MAPPING put  xlsx   Collections list  application vnd openxmlformats-officedocument spreadsheetml sheet          MIMETYPE MAPPING put  xlt   Collections list  application vnd ms-excel          MIMETYPE MAPPING put  xltm   Collections list  application vnd ms-excel template macroEnabled 12          MIMETYPE MAPPING put  xltx   Collections list  application vnd openxmlformats-officedocument spreadsheetml template          MIMETYPE MAPPING put  xrf   Collections list  image x-dcraw          MIMETYPE MAPPING put  yaml   Arrays asList  application yaml    text plain          MIMETYPE MAPPING put  yml   Arrays asList  application yaml    text plain          MIMETYPE MAPPING put  zip   Collections list  application zip          MIMETYPE MAPPING put  url   Collections list  application internet-shortcut          MIMETYPE MAPPING put  webloc   Collections list  application internet-shortcut          MIMETYPE MAPPING put  js   Arrays asList  application javascript    text plain          MIMETYPE MAPPING put  json   Arrays asList  application json    text plain          MIMETYPE MAPPING put  fb2   Arrays asList  application x-fictionbook xml    text plain          MIMETYPE MAPPING put  html   Arrays asList  text html    text plain          MIMETYPE MAPPING put  htm   Arrays asList  text html    text plain          MIMETYPE MAPPING put  m   Arrays asList  text x-matlab    text plain          MIMETYPE MAPPING put  svg   Arrays asList  image svg xml    text plain          MIMETYPE MAPPING put  swf   Arrays asList  application x-shockwave-flash    application octet-stream          MIMETYPE MAPPING put  xml   Arrays asList  application xml    text plain

User · Answer

To load a  docx file      if let htmlFile   Bundle main path forResource   quot fileName quot   ofType   quot docx quot             let url   URL fileURLWithPath  htmlFile          do              let data   try Data contentsOf  url              self webView load data  mimeType   quot application vnd openxmlformats-officedocument wordprocessingml document quot   textEncodingName   quot UTF-8 quot   baseURL  url           catch              print  quot errrr quot

User · Answer

Here are the correct Microsoft Office MIME types for HTTP content streaming   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   mdb      application vnd ms-access   For further details check out this TechNet article and this blog post

User · Answer

Here is the  almost  complete file extensions s MIME in a JSON format  Just do example  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   xml    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    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User · Answer

This post will explore various approaches of fetching MIME Type across various programming languages with their CONS in one-line description as header. So, use them accordingly and the one which works for you.

For eg. the code below is especially helpful when user may supply either of .xls, .xlsx or .xlsm and you don't want to write code testing extension and supplying MIME-type for each of them. Let the system do this job.

Python 3

Using python-magic

>>> pip install python-magic
>>> import magic
>>> magic.from_file("Employee.pdf", mime=True)
'application/pdf'

Using built-in mimeypes module - Map filenames to MimeTypes modules

>>> import mimetypes
>>> mimetypes.init()
>>> mimetypes.knownfiles
['/etc/mime.types', '/etc/httpd/mime.types', ... ]
>>> mimetypes.suffix_map['.tgz']
'.tar.gz'
>>> mimetypes.encodings_map['.gz']
'gzip'
>>> mimetypes.types_map['.tgz']
'application/x-tar-gz'

JAVA 7

Source: Baeldung's blog on File MIME Types in Java

Operating System dependent

@Test
public void get_JAVA7_mimetype() {
    Path path = new File("Employee.xlsx").toPath();
    String mimeType = Files.probeContentType(path);

    assertEquals(mimeType, "application/vnd.ms-excel");
}

It will use FileTypeDetector implementations to probe the MIME type and invokes the probeContentType of each implementation to resolve the type. Hence, if the file is known to the implementations then the content type is returned. However, if that doesn’t happen, a system-default file type detector is invoked.

Resolve using first few characters of the input stream

@Test
public void getMIMEType_from_Extension(){
    File file = new File("Employee.xlsx");
    String mimeType = URLConnection.guessContentTypeFromName(file.getName());

    assertEquals(mimeType, "application/vnd.ms-excel");
}

Using built-in table of MIME types

@Test
public void getMIMEType_UsingGetFileNameMap(){
    File file = new File("Employee.xlsx");
    FileNameMap fileNameMap = URLConnection.getFileNameMap();
    String mimeType = fileNameMap.getContentTypeFor(file.getName());

    assertEquals(mimeType, "image/png");
}

It returns the matrix of MIME types used by all instances of URLConnection which then is used to resolve the input file type. However, this matrix of MIME types is very limited when it comes to URLConnection.

By default, the class uses content-types.properties file in JRE_HOME/lib. We can, however, extend it, by specifying a user-specific table using the content.types.user.table property:

System.setProperty("content.types.user.table","<path-to-file>");

JavaScript

Source: FileReader API & Medium's article on using Magic Numbers in JavaScript to get Mime Types

Interpret the Magic Number fetched using FileReader API

Final result looks something like this when one use javaScript to fetch the MimeType based on filestream. Open the embedded jsFiddle to see and understand this approach.

Bonus: It's accessible for most of the MIME Types and also you can add custom Mime Types in the getMimetype function. Also, it has FULL SUPPORT for MS Office Files Mime Types.

The steps to calculate mime type for a file in this example would be:

The user selects a file.
Take the first 4 bytes of the file using the slice method.
Create a new FileReader instance
Use the FileReader to read the 4 bytes you sliced out as an array buffer.
Since the array buffer is just a generic way to represent a binary buffer we need to create a TypedArray, in this case an Uint8Array.
With a TypedArray at our hands we can retrieve every byte and transform it to hexadecimal (by using toString(16)).
We now have a way to get the magic numbers from a file by reading the first four bytes. The final step is to map it to a real mime type.

Browser Support (Above 95% overall and Close to 100% in all modern browsers):

_x000D_

const uploads = []_x000D_
_x000D_
const fileSelector = document.getElementById('file-selector')_x000D_
fileSelector.addEventListener('change', (event) => {_x000D_
  console.time('FileOpen')_x000D_
  const file = event.target.files[0]_x000D_
_x000D_
  const filereader = new FileReader()_x000D_
_x000D_
  filereader.onloadend = function(evt) {_x000D_
    if (evt.target.readyState === FileReader.DONE) {_x000D_
      const uint = new Uint8Array(evt.target.result)_x000D_
      let bytes = []_x000D_
      uint.forEach((byte) => {_x000D_
        bytes.push(byte.toString(16))_x000D_
      })_x000D_
      const hex = bytes.join('').toUpperCase()_x000D_
_x000D_
      uploads.push({_x000D_
        filename: file.name,_x000D_
        filetype: file.type ? file.type : 'Unknown/Extension missing',_x000D_
        binaryFileType: getMimetype(hex),_x000D_
        hex: hex_x000D_
      })_x000D_
      render()_x000D_
    }_x000D_
_x000D_
    console.timeEnd('FileOpen')_x000D_
  }_x000D_
_x000D_
_x000D_
  const blob = file.slice(0, 4);_x000D_
  filereader.readAsArrayBuffer(blob);_x000D_
})_x000D_
_x000D_
const render = () => {_x000D_
  const container = document.getElementById('files')_x000D_
_x000D_
  const uploadedFiles = uploads.map((file) => {_x000D_
    return `<div class=result><hr />_x000D_
                    <span class=filename>Filename: <strong>${file.filename}</strong></span><br>_x000D_
                    <span class=fileObject>File Object (Mime Type):<strong> ${file.filetype}</strong></span><br>_x000D_
                    <span class=binaryObject>Binary (Mime Type):<strong> ${file.binaryFileType}</strong></span><br>_x000D_
                    <span class=HexCode>Hex Code (Magic Number):<strong> <em>${file.hex}</strong></span></em>_x000D_
                    </div>`_x000D_
  })_x000D_
_x000D_
  container.innerHTML = uploadedFiles.join('')_x000D_
}_x000D_
_x000D_
const getMimetype = (signature) => {_x000D_
  switch (signature) {_x000D_
    case '89504E47':_x000D_
      return 'image/png'_x000D_
    case '47494638':_x000D_
      return 'image/gif'_x000D_
    case '25504446':_x000D_
      return 'application/pdf'_x000D_
    case 'FFD8FFDB':_x000D_
    case 'FFD8FFE0':_x000D_
    case 'FFD8FFE1':_x000D_
      return 'image/jpeg'_x000D_
    case '504B0304':_x000D_
      return 'application/zip'_x000D_
    case '504B34':_x000D_
      return 'application/vnd.ms-excel.sheet.macroEnabled.12'_x000D_
    default:_x000D_
      return 'Unknown filetype'_x000D_
  }_x000D_
}

_x000D_

.result {_x000D_
  font-family: Palatino, "Palatino Linotype", "Palatino LT STD", "Book Antiqua", Georgia, serif;_x000D_
  line-height: 20px;_x000D_
  font-size: 14px;_x000D_
  margin: 10px 0;_x000D_
}_x000D_
_x000D_
.filename {_x000D_
  color: #333;_x000D_
  font-size: 16px;_x000D_
}_x000D_
_x000D_
.fileObject {_x000D_
  color: #a53;_x000D_
}_x000D_
_x000D_
.binaryObject {_x000D_
  color: #63f;_x000D_
}_x000D_
_x000D_
.HexCode {_x000D_
  color: #262;_x000D_
}_x000D_
_x000D_
em {_x000D_
  padding: 2px 4px;_x000D_
  background-color: #efefef;_x000D_
  font-style: normal;_x000D_
}_x000D_
_x000D_
input[type=file] {_x000D_
  background-color: #4CAF50;_x000D_
  border: none;_x000D_
  color: white;_x000D_
  padding: 8px 16px;_x000D_
  text-decoration: none;_x000D_
  margin: 4px 2px;_x000D_
  cursor: pointer;_x000D_
}

_x000D_

<body>_x000D_
_x000D_
  <input type="file" id="file-selector">_x000D_
_x000D_
  <div id="files"></div>

_x000D_

[excel] What is a correct MIME type for .docx, .pptx, etc.?

The answer is

Swift4

Python 3

Using python-magic

Using built-in mimeypes module - Map filenames to MimeTypes modules

JAVA 7

Operating System dependent

Resolve using first few characters of the input stream

Using built-in table of MIME types

JavaScript

Interpret the Magic Number fetched using FileReader API

Examples related to excel

Examples related to ms-word

Examples related to ms-office

Examples related to powerpoint

Examples related to mime-types

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