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File Types

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The file name extension is the three character designation appended to file names in windows systems. E.g. .doc for MS Word, .txt for plain text files, .gif .jpg and others for graphic image formats. Windows and Internet browsers use these to determine what application to open to read a file. There are many file types (over 15,000 are listed at filext.com/).
This is a list of 750 of the most common ones, which I started in 1994 to configure web servers so clients would open the correct application to read files on the web.

Since there is no central registry there are quite a few duplicates (same extension for different files). For example there are 20 different file types with an extension of .img, 18 with .art, 16 with .db and more than 20 with an extension of .dat. Only the most common use of each extension is shown. Click on the extension for a more complete list.

File extensions ending in "_" (e.g. .38_) are usually compressed files in an Install package which are expanded (e.g. to .386) by the installer.

See filext.com The File Extension Source for others. see also File Extension Help at filext.com. It explains how to get clues as to a files type based on where you got it or where it is stored on your hard disk.

The first several characters in a file may be used to determine the type of file. This may be useful if the file was created on UNIX or a Mac where the file name extensions are not required. See type-from-content below.

Multipurpose Internet Mail Extensions (MIME) types are included in the file message header by web servers. Browsers uses this to determine what program to use to display the file contents.
See MIME for more information.
The association between etensions, MIME-types and application programs is configured in windows from a "my compuer" or "windows explorer" window by selecting View > Folder Options > File Types. On macs and UNIX they are set up in your browser (e.g. Internet Explorer) under Preferences > Receiving FIles >Helpers.
Or on a Mac: Select the document and choose File > Get Info. click to show the "Open with" pane.

750 of the most common ones are listed below. See filext.com/ and Dot What!? for lists of over 15,000.

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File Extn MIME Type Start
with Descr 386 application/octet-stream   Windows Enhanced Mode Driver or Swap File 001 application/x-001   FAX Datafile 0xx     Electronic Navigational Charts (ENC) S57, or DX90 Cells 3gp or
3gpp audio/3gpp, video/3gpp   3rd Generation Partnership Project. Multimedia over 3rd generation wireless networks. H.263 video is the mandatory video format in 3GPP and AMR is the main audio/speech format. 7CB application/vnd.ecdis-update   Electronic Chart Display and Information System (ECDIS) ENC DirectENC files 7z     7-Zip Compressed File aa audio/audible   Audible file format (audio books) aab application/x-authorware-bin   Macromedia Authorware Binary aac audio/aac   Advanced Audio Coding File. Part of MPEG-2 and MPEG-4 standard. (Apple iTunes Store) aam application/x-authorware-map   Authorware Map (Shockwave?) aas application/x-authorware-seg   Authorware Shocked Packet (Segment) aba text/x-palm-aba   AddressBook Archive (Palm) ac3 audio/ac3   Adaptive Transform Coder 3 (relates to the bitstream format of Dolby Digital) aco     Adobe Color acsm     Adobe Content Server Message File - overdrive e-Book for reading in Adobe Digital Editions act     Office Actor or Animation Work Actors or Photoshop Color Table File adi     AutoCAD Plot File adr application/x-msaddr   Address Book aexpk application/pgp-keys   Armored extracted public key (PGP) afl video/animaflex   Font file (for Allways) (Lotus 1-2-3) ahtml magnus-internal/cgi-advertiser     ai application/postscript   Encapsulated PostScript (metafile) (Adobe Illustrator) aif audio/x-aiff   Audio Interchange File Format aifc audio/x-aiff   Audio Interchange File Format aiff audio/x-aiff   Audio Interchange File Format aim application/x-aim   AIM file - AOL Instant Messanger ale     Apple Lossless Encoder (same as m4a) alt application/x-up-alert   Menu file (WordPerfect Library) aml     Arc Macro Language amr     Adaptive Multi-Rate Codec. Speech encoding format used in GSM telephony. ani   animated cursor ans     MS Word for Windows Text with Layout aos application/x-nokia-
9000-communicator-
add-on-software   Add-On Software (Nokia 9000) ape     Monkey's audio Lossless Compression format apk application/vnd.android.package-archive   Android Package File - A zip format containing files .DEX, .ARSC, and AndroidManifest.xml to run in an android program. apnx   Amazon Page Number Index File app     Apple Macintosh Application bundle app     dBASE Application Object File arc     PC ARC Archive compressed arj application/x-arj   Compressed file archive created by ARJ or winzip art image/x-jg, image/art   AOL Johnson-Grace Compressed File and Another Ray Tracer Format as     AppleSingle asc   ASCII text asc   ActionScript Communication File - Adobe asc application/pgp-encrypted   Armored Encrypted file (PGP) asd application/astound   Autosave file (Word for Windows) asf application/vnd.ms-asf video/x-ms-asf video/x-ms-wm   Windows Media file - Advanced Systems/Streaming Format (ASF), NetShow ashx     ASP.NET Web Handler File asm     PC ASM File asn application/astound     asp text/html, text/asp, application/x-asp, application/x-asap   Active Server Pages - standard HTML documents interlaced with ActiveX script code aspx     Part of Microsoft .NET; a webpage source file. Chase Visa Statements read with Adobe Acrobat (really a pdf file). Create with Dreamweaver MX or Microsoft Visual Studio asp     File type created by the Association of Shareware Professionals. asr video/x-ms-asf   Microsoft NetShow asx video/x-ms-asf application/x-mplayer2 application/asx   Advanced Stream Redirector File (Microsoft) asz application/astound     atrac     Adaptive TRansform Acoustic Coding audio file att     AT&T Group 4 au audio/basic, audio/x-ulaw, audio/x-gsm, audio/snd   8-bit u-law [PCM] / 8000 Hz aux   ArcGIS Auxilliary File avi video/avi, video/msvideo, video/x-msvideo   Audio Video Interleave File - Windows Media Player, RealPlayer. May use sevral Codecs such as VfW (Video for Windows). Some Codecs are not supported on the Mac.
See: John McGowan's AVI Overview avr     sound avs     animation awe     pAcrobat Bookmark XML File awk   BOBO AppleWorks or UNIX awk script axd text/plain   ASP.NET Web Handler File axs application/olescript   ActiveX Script azw application/octet-stream   Amazon Kindle e-book File

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File Extn MIME Type Start
with Descr b64     WinZip bac     binary backup bak     Backup file bas text/plain   BASIC program bat application/octet-stream   DOS BAT (Batch) file. bbm     image bck     VMS backup bcpio application/x-bcpio   Old Binary CPIO bexpk application/pgp-keys   binary extracted public key (PGP) bfc     briefcase bib     BibTeX Bibliography big     Chinese Traditional text coding (old version) big5     Chinese Traditional (old version) bin application/octet-stream   Uninterpreted Binary Data bin application/x-macbinary   Binary file bk application/vnd.framemaker   FrameMaker book bleep application/bleeper     bmf     Binary Material File bml     Bean Markup Language, a set of Java classes that provide scripting language. bmp image/x-bmp, image/x-MS-bmp, image/x-mspaint, image/x-win-bmp   Windows Bitmap (PaintBrush) boo     image brw     Oracle Browser bst     BibTeX Style Files btf image/prs.btf   NationsBank Check Images (also .btif) byu     movie byu file bup     Backup DVD Info File C -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z c text/plain   C program c++ text/plain   C program cab application/cab, application/x-cabinet-
%opersys%-%cpu%   Cabinet file Microsoft installation archive. opersyss=win32, mac cpu=x86, ppc, mips, alpha cag     Clip Art Gallery - PowerPoint cal application/x-msschedplus   MS schedplus or calendar cat application/pdf   PDF Catalog (Used with Acrobat Reader and Search plug-in) cat application/vnd.ms-pki.seccat   Security Catalog cat     Quicken IntelliCharge Categorization File cch     Corel Chart ccs text/ccs   Cluster Configuration System used with the Global File System (GFS) in Red Hat Linux cdda audio/aiff   CD Audio Track cda audio/x-cda   CD Audio Track cdf application/x-netcdf   Channel File, Unidata netCDF data file cdf text/plain, application/x-cdf   Channel Definition Format - MS push std cdr     ISO CD/DVD Disk Image File on a Mac (see also .iso, dmg, cso, dax) cdr application/x-coreldrw   Corel Draw (metafile) cer application/pkix-cert, application/x-x509-ca-cert   Internet Security Certificate cfg     Configuration file used by many programs. No standard format. cfl     COREL flow cfm wwwserver/wsapi   Cold Fusion Markup cfs     ColdFusion IIS plugin IICF.DLL) cgi magnus-internal/cgi, wwwserver/shellcgi   Common Gateway Interface cgm image/cgm   Computer Graphics Metafile ISO/IEC 8632 chat application/x-chat     che application/x-up-cacheop     chm     Compiled HTML cht audio/x-dspeech   Chart (Harvard Graphics 2.0 - SoftCraft Presenter) cil application/vnd.ms-artgalry   Clip Gallery Download Packages class application/java-vm, application/octet-stream   Java cli application/vnd.ms-artgalry     clm     Magic Jack call log clp image/x-clp   Clip art graphics (Quattro Pro) clp application/x-msclip   Windows Clipboard (metafile) cmd     Windows NT and 95 CMD files (similar to bat in DOS) cmf     music cmx drawing/cmx
image/x-cmx   Corel Presentation Exchange, Corel Metafile Exchange cnc application/x-cnc   CNC general program /fsta cnf     converter cnt     Help File Contents cnv     Canvas Ver 6, 7, ... Image (free Canvas 9 Viewer at ACD Systems) cnv     Word Data Conversion File cod image/cis-cod   Datafile (Forecast Plus - MS Multiplan - StatPac Gold) coda application/x-coda     com application/octet-stream   DOS COM Executable (similar to exe, but a direct memory image) con     QuickTime .mov on Disney server returns extension .con or.c conf     Configuration File - Linux cpi     Windows or DOS International Code Page cpi image/cpi   ColorLab Processed Image cpio application/x-cpio   IEEE Std1003.2 (`POSIX') CPIO cpl     Control Panel extension cpp     C++ source files cpt application/mac-compactpro   Compact Pro Archive cr2   Canon Raw Image Format crd application/x-mscardfile   MS cardfile crt application/x-x509-ca-cert   Certificatefile crx   Chrome Extension csh application/x-csh   CSH Script cso     CISO Compressed ISO disk image (DevHook & PlayStation (psp) iso compressor application) css application/x-pointplus   Datafile (CSS - Stats+) css text/css   Cascading Style Sheets csv text/csv, application/csv, application/x-csv   Comma-Separated Values (Excel, Lotus 123, FoxPro, MS Outlook) ct image/   Iris CT Graphic or Scitex CT Handshake Bitmap cu application/x-cu-seeme     cur     cursor image cut image/x-halo-cut   Bitmap graphics cv5     Canvas Version 5 Image cwk   BOBO Claris Works or AppleWorks cxt     Macromedia Director Protected Cast File cxx     C++ source files

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File Extn MIME Type Start
with Descr dat application/octet-stream   Data file. Can be anything, text, graphics, binary, ... dat application/ms-tnef   MicroSoft Transport Neutral Encapsulation Format. When an end user sends mail to the Internet from an Exchange Windows or Outlook client (not outlook express), a file attachment called WINMAIL.DAT may be created with Exchange Server RTF information for the message. Programs like WMDecode and Fentun can be used to recover any attachments from the WINMAIL.DAT file. Some mail programs will automatically extract the contants e.g. a MS Word (.doc), Excl (.xls), Windows Media Video (wmv) or other binary document. dat     Digital Audio Tape. Get VLC Media Player at www.videolan.org/ for Mac dat video/dvd, video/mpeg   Video CD MPEG or MPEG1 Movie db   Database. There are at least 16 different applicataion using the extension, usually for a database file. dba text/x-palm-dba   DateBook Archive (Palm) dbf application/octet-stream   DataBase File (FoxPro, dBase) dbm wwwserver/wsapi   ColdFusion IIS Plugin dca application/dca-rft   IBM Doc Content Arch dcf     dKart Charts www.openecdis.org dcr application/x-director   Macromedia Director (Shockwave) dcr     digital camera - Kodak Digital Camera Raw Image File dcs     image dct     Dictionary file used by various programs (Adobe Illustrator, Clarion, .. ) dct     Express Dictate's audio file (Note: DCT - discrete cosine transform, is a pict and video compression algorithm which is different) ddb     Device-Dependent Bitmap ddf     Dynamic Data Format (https://www.stsci.edu/stsci/meetings/adassIV/conroym.html) deb application/octet-stream   Binary for debian UNIX der application/x-x509-ca-cert   Certificatefile des     text dex     Bytecode to run in the Android Runtime (ART) virtual machine. dfont     Mac Datafork TrueType Font dib     Device Independent Bitmap. A .BMP file without .BMP header. dic     Dictionary dif     Data Interchange Format - a general spreadsheet format dig     text dir application/x-director   Macromedia Director (Shockwave) Movie Encoded with DivX-codec divx     Movie Encoded with DivX-codec djv image/vnd.djvu   Movie Encoded with DivX-codec djvu image/vnd.djvu   DJVU image (AT&T compression) dl     PC DL Movie dlg     image dll application/x-msdownload, application/x-pe-
%opersys%-%cpu%   Dynamically Linked Library (DOS) pe-portable executable opersys=win32, mac cpu=x86, ppc, mips, alpha dl_     compressed .dll in Install package dmg     Disk Image (Apple) dms application/octet-stream   Compressed Amiga file archive created by DISKMASHER dng     Digital Negative - Adobe dnl     DNAML e-Book File. Protected using
digital rights management (DRM) dnp     DRM File do   Stata Batch File doc application/msword, application/doc   MS Word docx application/presentations, application/doc   Word Microsoft Office Open XML Format Document (Office 2007) dot application/msword   MS Word (Template) dox     Multimate 4 dp     DAVIN drv     Device Driver drw     Micrografx Designer 3.1 (metafile) dsf image/x-mgx-dsf   Micrografx Designer 6 (metafile) dsp     Rumba TN3270 session profile dst application/tajima   PC-RDist Distribution file dta   Stata Data File dtd text/xml   SGML Document (Type) Definition file dtl   Django Template Language dus audio/x-dspeech   Readiris font dictionary dvi application/x-dvi   TeX DVI (Device Independent) dwc application/dwc   compressed archive dwf drawing/x-dwf   Autodesk WHIP! Drawing Web file dwg application/x-acad, application/vnd.dwg, image/vnd.dwg, application/x-dwg, application/x-autocad   AutoCAD Drawing
See History of CAD dwg     Drawing (Drafix) dwt   DreamWeaver template and AutoCAD Template/Prototype dxf application/vnd.dxf   Drawing eXchange Format, Data Exchange File, AutoCAD (vector) dxr application/x-director   Macromedia Director (Shockwave)

E-F -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z

File Extn MIME Type Start
with Descr ebk application/x-expandedbook     ece     used by the The Independent News in the UK. May be some kind of scripting language. efx     eFax Fax Document (J2 Global Communications efax.com emf image/x-emf   Enhanced metafile created in Microsoft Windows and Visio 2002 applications eml message/rfc822   MS Internet Mail Message (Outlook Express and others) emlx message/rfc822   Mac OS X mail message emz   .emf file compressed with gzip enc application/pre-encrypted   Pre-encrypted Data (also Sniffer trace) enex   Evernote export/archive eot application/octet-stream   Embedded OpenType Font eps application/postscript   Encapsulated PostScript (raster) epub application/zip   Open e-book file. An XML format for reflowable digital books and publications. From the International Digital Publishing Forum. Actually a zip doc. erf application/x-hsp-erf     es audio/echospeech     etf image/x-etf   Enriched Text file etx text/x-setext   Structure Enchanced Text euc     Japanese (Kanji) evy application/x-envoy   Document (WordPerfect Envoy) exe application/exe, application/octet-stream, application/x-msdownload   Directly executable program (DOS) ex_     compressed .exe in Install package exe application/x-pe-
%opersys%-%cpu%   pe-portable executable opersys=win32, mac cpu=x86, ppc, mips, alpha exif     Exchangeable Image File format for digital cameras. JPEG file with Exif metadata. Not actually an name extension but a special type of .jpg exr     OpenEXR Image - Industrial Light & Magic F f     Freeze Compressed File Archive (UNIX) fac     picture fbc     FamilyTree Compressed Backup File fdd   Parallels floppy disk image fdf application/vnd.fdf   Acrobat Portable Document Input Form fh4 image/x-freehand   Vector graphics (Aldus FreeHand 4.x) fh5 image/x-freehand   Freehand 5 fhc image/x-freehand   Freehand fif image/fif   Fractal Image Format file fif application/fractals   Fractals fits image   Flexible Image Transport System. GeoTIFF fla application/x-shockwave-flash     flac audio/flac   Free Lossless Audio Codec flc video/flc   FLIC Animated Picture Autodesk fld     fLd Player Video (YouTube videos). Flash type but may need separater fld player. fli video/fli   FLIC Animated Picture Autodesk flt     filter - e.g. Graphic inport filter for Word flv video/x-flv   Flash Video File flx   MicroSurvey CAD Drawing File fm application/filemaker_pro   FileMaker Pro (also used with FrameMaker 3) fm application/vnd.framemaker   FrameMaker Document fm3 application/x-maker   FrameMaker fm3   FileMaker 3 Database Document fm3     Lotus 1-2-3 Format File fm4 application/vnd.framemaker   FrameMaker fm5 application/vnd.framemaker   FrameMaker fml application/fml     fon     Windows 3.x font library file fot     Installed TrueType Font fpbf     Finder Backup Burnable Archive - tar-format archives on Mac OS X fpx     FlashPix format for storing digital images developed by Kodak fp5 application/filemaker5   FileMaker Pro frl application/freeloader   FormFlow file frm application/vnd.framemaker   FrameMaker fs application/X-FSRecipe     fssd     sound ftw     FamilyTree Maker

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File Extn MIME Type Start
with Descr g3f image/g3fax   Group III FAX gb application/chinese-gb
text/x-chinese   Chinese Text gds     image gdb     GeoDatabase, GPS Database ged     GEDCOM Family History File gem     Venture Publisher, GEM Draw (vector) gif image/gif GIF GIF - Graphics Interchange Format - Compuserve (raster) gl     animated picture gmf     graphic gph   Stata Graph File gpx     GPS eXchange format. EasyGPS gry     picture gsc     GeneStudio File - (Molecular Biology Software) gsd audio/x-gsm   GSM Internet Realtime Audio gsm audio/x-gsm, application/x-gsm   Raw GSM 6.10 Audio Stream gtar application/x-gtar   Gnu Tar gz application/x-gzip, application/x-compressed   Unix Gzip (gnu-compress ecnapsulation) gzip     compressed H h     C Header ha     compressed ham     image hdd   Parallels Desktop Hard Disk File hdf application/x-hdf   NCSA HDF (Hierarchical Data Format) hdml text/x-hdml     heic     iOS High Efficiency Image Format hgl     HP Graphics Language hlb vms/help   VMS help libraries hlp application/x-mshelp   Windows Help hpgl application/vnd.hp-HPGL   HP Graphic Language hpk     compressed hqx application/mac-binhex40   BinHex 4.0 Format - Macintosh Binary to ASCII conversion. hrz     image htm text/html   HTML - HyperText Markup Language html text/html   HTML - HyperText Markup Language htt     Hypertext templates. GoLive, FrontPage htx     Extended Hypertext Template - MS HTML extension files hyp     compressed hz application/chinese-hz   Chinese

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File Extn MIME Type Start
with Descr ibm     picture ica application/x-ica   Bitmap graphics (Image Object Content Architecture) ice x-conference/x-cooltalk   Cooltalk Audio icm     Image Color Matching File ico image/ico, image/x-icon   Windows icon icq application/x-icq   Saved ICQ Contact Information. From IRQ Chat Groups, Lists, Boards, Lists, IrCQ-Net Chat. ics text/calendar   Calendar Data (iCal - Mac; Outlook or Windows) idc     Internet Database Connector ief image/ief   Image Exchange Format iff image/iff   Amiga Bitmap Graphic ifo     DVD Info File iges
igs model/iges   Initial Graphics Exchange Specification. ANSI-approved standard format used with 3D wire frame models.
Mac: CADintosh from Lempesoft.com or Win: igsviewer.com igs model/iges, image/x-igs, application/iges, application/x-igs   IGES - Initial Graphics Exchange Specification Format img image/img   Venture Publisher, GEM Draw (bit mapped), AutoCAD CAD-Camera, others img     Apple Macintosh Disk Copy Format, HDCopy Pro hard disk images imi     Magellan GPS detailed map ini text/plain   Initialization/Configuration File for MS Windows. Many programs now use the registry (Windows NT and later) instead of .ini files. inc text/plain     indd     InDesign Document (Adobe) inf application/x-setupscript   Setup scripts (For Installing Drivers, etc.), Autorun - auto-start file for a CD-ROM ins application/x-NET-Install   Data (WordPerfect) ipix     Interactive Pictures www.ipix.com ips application/ips, application/
x-ipscript   Game Patch file ipx application/x-ipix   IPIX AV file isapi wwwserver/isapi   Internet Server API - Application Program(ming) Interface ish     compressed iso     Disc Image saved in ISO-9660 format (Easy CD Creator, Nero, Roxio) ivr i-world/i-vrml   Virtual Reality World Live Picture iw4     DjVu File

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jar application/java-archive     jas     JASC JAS Compressed : Bitmap graphics java text/plain     jbig     image jfi     image jfx application/octet-stream   eFax Fax Document (J2 Global Communications jconnect.j2.com/ jis     Japanese jpc     picture jpe image/jpeg   JPEG-JFIF - Joint Photographic Experts Group jpeg image/jpeg   JPEG-JFIF - Joint Photographic Experts Group jpg image/jpeg   JPEG-JFIF - Joint Photographic Experts Group (raster) jps image/x-jps   Stereo Image js application/x-javascript   Java Script jsc application/x-javascript-config     json aplication/json   Java Script Object Notation jsp magnus-internal/jsp   Java Script jspx   XML Java Server Page jso   Compressed disk image - PSP ISO Compressor K key application/
x-iwork-keynote-sffkey   Mac iWorks keynote presentation program. Includes slides, images, text, transitions. kf8   Kindle Format 8 - Kindle fire e-Book format kml application/vnd.google-earth.kml+xml   KeyHole Markup Language (Google Earth, ArcGIS Explorer, MS Virtual Earth) ksh     K (Korn) shell L la audio/nspaudio   Netscape Packetized audio lam     streaming audio metafiles latex application/x-latex   LaTeX Source lbm     image lbr     library compressed ldif text/x-ldif   LDAP Data Interchange Format ( Netscape Address Book) lex   Lexicon (Dictionary) lha application/octet-stream   LHA Archive lis     program listing lgo     Modern ListGeo Output. GeoTIFF lm8     picture lma audio/nspaudio   Netscape Packetized audio lng   Acrobat Language Plug-in loc application/octet-stream   GPS Location File - TopoGrafix loe application/vnd.framemaker   FrameMaker list of exhibits lof application/vnd.framemaker   FrameMaker list of figures lot application/vnd.framemaker   FrameMaker list of tables lpr   FrameMaker list of tables
or Homeworld lpr   Kindle position informataion lwp WordPro 9.5     lzh application/octet-stream   compressed lzs application/octet-stream   compressed lzw     LHWarp archive lzx application/octet-stream   compressed

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m13 application/x-msmediaview   MS mediaview m14 application/x-msmediaview   MS mediaview m2ts video/   Blu-ray BDAV MPEG-2 Transport Stream m3u audio/x-mpegurl
audio/mpeg-url   MP3 Playlist (Musicmatch, WMP, Winamp, ...) m4a audio/   MPEG-4 audio file. Apple iTunes AAC and ALE unprotected m4b audio/   MPEG-4 Audio Layer Bookmarkable File. Apple iTunes AAC and ALE unprotected m4v     H.264 MPEG-4 Video File m4p audio/   Apple iTunes AAC protected m4b audio/   Apple iTunes AAC protected autiobook ma application/mathmetica   Mathmetica Notebook mac     Rumba VT420 (SPRY Telnet) TN3270 macro mag     picture man application/x-troff-man   Troff w/MAN Macros map application/x-httpd-imap, magnus-internal/imagemap   Image Configuration File (HTML Image Map) mat     sound mbd application/mbedlet   Multimedia Builder Project File mbp   Mobipocket Notes File mcf image/vasa   Mathcad font mcf     Meta Content Format File mcw     MS Word in Mac format md     compressed mda application/x-msaccess   MS Access (May not be desirable) mdb application/x-msaccess   MS access mdf     SQL Server Master Database File me application/x-troff-me   Troff w/ME Macros med     Amiga Med Sound mem     dBase Memory File mesh model/mesh     mfc     Microsoft Foundation Classes mfp application/mirage     mgf     image mgi     Magellan GPS background map mhg     multimedia mht message/rfc822   Microsoft Web Archiv mic     Microsoft Image Composer mid audio/x-midi   MIDI midi audio/x-midi   MIDI mif application/vnd.mif, application/x-mif   Maker Interchange Format (FrameMaker) mime message/rfc822   base64 (6-bit) is the standard for encoding binary attachme mix     Microsoft Picture It mk application/vnd.framemaker   FrameMaker mki     picture mkv     Matroska Video File mlp     MacLinkPlus Print Capture File mmf application/x-smaf
application/vnd.smaf   SMAF = "Synthetic music Mobile Application Format" - Polyphonic Ringtone File for Phones - Yamaha mmf     MS Mail file mml     Maker Markup Language mmm application/pdf   Acrobat Media Clip mny application/x-msmoney   MS money mobi application/x-mobipocket   Mobipocket e-book file, Gutenberg kindle book mocha application/x-javascript   Java Script mod     Amiga Mod Sound mol chemical/x-mdl-molfile   MDL Molfile mov video/quicktime   H.264 QuickTime digital video movie video/x-sgi-movie   SGI "movieplayer" movie mp2 audio/mpeg   MPEG Audio Stream, Layer II mp3 audio/mpeg, audio/x-mpeg3,
audio/mpg   MPEG Audio Stream, Layer III mp4 video/mp4v-es, audio/mp4   H.264 MPEG Audio Stream, Layer IV (QuickTime and RealPlayer) mpa audio/mpeg   MPEG Audio Stream, Layer I, II or III mpa text/x-palm-mpa   MemoPad Archive (Palm) mpd     Windows Mini-port Driver mpd   File List Creator MP3 Playlist mpe video/mpeg   MPEG - Motion Picture Experts Group mpeg video/mpeg   MPEG - Motion Picture Experts Group mpg video/mpeg   MPEG - Motion Picture Experts Group mpga audio/mpeg     mpire application/x-mpire     mpkg     Meta Package File - Installer archive (linus, Mac) mpl application/x-mpire     mpp application/vnd.ms-project   MS Project mps     multimedia mpt application/vnd.ms-project   MS Project mpv application/vnd.ms-project   MS Project view mpw application/vnd.ms-project   MS Project mpx application/vnd.ms-project   MS Project mrb     image mrw     digital camera - Minolta Diamage Raw Image File ms application/x-troff-ms   Troff w/MS Macros msi text/mspg-legacyinfo
application/x-ole-storage D0 CF Windows Installer File msh model/mesh   2 and 2-D visualization mso     MS Office Macro Reference File msp     MS Paint mspx     XML-based Web Page mtm     sound mtp     Microsoft Team Manager file mts     MPEG Transport Stream - Advanced Video Codec High Definition (AVCHD) - High-definition MPEG Transport Stream video format mtv     MTV Video Format File mu     Mac UUencoded

N-O -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z

File Extn MIME Type Start
with Descr n2p application/n2p     nc application/x-netcdf   Unidata netCDF data file nef     digital camera - Nikon Digital SLR Cameras Raw Graphic File Format nff     image ngg     Nokia Group Graphics - Mobil Phone Logo nol     Nokia Operator Logo - Mobil Phone npx application/x-netfpx     nsc application/x-nschat   Noder file (Polish) nsf application/x-notes   Lotus Notes nst     sound ntf application/x-notes   Lotus Notes num-
bers     Mac iWorks spread sheet nv     networked video nws     Net News nzb     newzBin USENET Index O obd     Office Binder file obj     PC Compiled Object File obt     Office Binder template ocx application/x-oleobject   Object Linking and Embedding (OLE) Control Extension (ActiveX Control) oda application/oda   ODA/ODIF ODF Open Document Architecture odf     ODA/ODIF Open Document Architecture / ODF Open Document Interchange Format OpenOffice.org, Libre Office, StarOffice Calc odg application/vnd.oasis
.opendocument.graphics   OpenOffice/StarOffice ODF OpenDocument (Ver 2) Graphics Document odp application/vnd.oasis
.opendocument.presentation   OpenOffice/StarOffice ODF OpenDocument (Ver 2) Presentation ods   ODF OpenDocument Spreadsheet - LibreOffice, OpenOffice odt application/vnd.oasis.-
  opendocument.text   OpenDocument Text - An open XML-based document file format for office applications to be used for documents containing text, spreadsheets, charts, and graphical elements. Approved as an OASIS (Organization for the Advancement of Structured Information Standards) Committee Specification. OpenOffice/StarOffice OpenDocument, LibreOffice off     Object File Format, 3D images, (apps MeshLab, GLC_Player, RoffView ofml application/fml     ofx     Open Financial Exchange (Quicken, MS Money, ..) ogg audio/x-ogg   Ogg Vorbis open-source audio format ogv video/ogg   Video file that uses the Xiph.Org's open source Ogg container format olb vms/olb   Vax Object Library or MS Project Object Library omf     image opd     OmniPage Document opf     e-book Systems FlipAlbum opw     Org Plus Org Chart opx     MS Org Chart or2 application/x-organizer   Lotus Organizer orf     digital camera - Olympus Raw Image File osd     Open Software Description - MS softwr distribution ost     Offline Folder file otf pplication/vnd.ms-opentype   Open Type Font other     Unknown ovl application/octet-stream   PC OVL File owl     Web Ontology Language oxt     OpenOffice.org Extension

P -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z

File Extn MIME Type Start
with Descr p12   Certificate file p7c   Certificate file p7m application/pkcs7-mime   S/MIME signedData, envelopedData p7s application/pkcs7-signature   PKCS #7 Signature p10 application/pkcs10   S/MIME Certificate Request pac application/x-ns-proxy-autoconfig     page application/x-coda     pages PK   Mac iWorks pages word processor pak     compressed pal     Palettes pat     Hatch patterns (AutoCAD - Photostyler) pat     Vector fill files (CorelDRAW) pbd application/vnd.powerbuilder6   Phone book (FaxNOW! - Faxit) pbm image/x-portable-bitmap   PBM Bitmap Format pcc     PC PaintBrush pcd image/x-photo-cd   Kodak Photo CD (raster) pcl application/pcl, application/x-pcl   Printer Control Language (HP) pcm     sound pct     Macintosh QuickDraw format (PICT) (metafile) pcx image/pcx   PC Paintbrush (ZSoft Image) pdb chemical/x-pdb   Chemical Objbect pdb text/x-palm-pdb   Palm Database/Document File. Used by nook for e-Books pdf application/pdf   Portable Document Format (Adobe Acrobat) pdr     Port Driver pds     Print Shop Graphic pds     NASA Planetary Data System Format Space Mission Data pem application/application/x-pem-file   Privacy Enhanced Mail Security Certificate pf   Aladdin Systems Private Files Encrypted File or Archive file pfm application/pdf   Acrobat Font pfr application/font-tdpfr     pgl     HP 7475A Plotter (vector) pgm image/x-portable-graymap   PBM Graymap Format pgp application/x-pgp-plugin   Support file (Pretty Good Privacy RSA System) pgp application/pgp-encrypted   PGP Encrypted file pgr text/parsnegar-document     phl   Kindle Popular Highlights File php application/x-httpd-php, text/php, application/php, magnus-internal/shellcgi, application/x-php   PHP Script php   Host Presenter (Novell Telnet) profile php3 application/x-httpd-php3     phtml application/x-httpd-php   PHP Script pic application/pic   Lotus Chart pic image/pict   Macintosh QuickDraw format (metafile) pict image/pict   Macintosh QuickDraw format (metafile) pif application/x-mspif   Program Information File (Windows) pit     Macintosh compressedB pix     Inset Systems PIX (raster) pjl     Printer Job Language pkg     AppleLink Archive pkr application/pgp-keys   Public Keyring (PGP) pkt     EtherPeek Packet Dump pl     Perl script pls audio/x-scpls   MPEG PlayList (Real Audio, Napster) plist   Property List XML File using AppleÕs plist DTD (Document Type Definition) plt     HP Plotter (HPGL) Print File pm     PageMaker Document, Perl Module, Presentation Manager Graphic pmd, pm3, pm4     PageMaker document pnc text/x-palm-pnc   Palm Network Configuration File png image/png, image/x-png   Portable Network Graphics (Replacement for gif with 65K colors) (lossless storage format) pnm image/x-portable-anymap   PBM Anymap Format pnt     MacPaint pol     music pot application/ms-powerpoint   MS PowerPoint template pp     Amiga compressed ppa application/vnd.ms-powerpoint   MS PowerPoint addin ppm image/x-portable-pixmap   PBM Pixmap Format pps application/ms-powerpoint   MS PowerPoint Slideshow ppsx     Power Point Microsoft Office Open XML Format Presentation Slide Show ppt application/ms-powerpoint   MS PowerPoint Presentation pptx application/presentations   MS PowerPoint XML format (Office 2007) ppz applications/ms-powerpoint   MS PowerPoint Animation pqa text/x-palm-pqa   Palm Query Application pqf application/x-cprplayer     pqi application/cprplayer   Power Quest Drive imaging prc application/vnd.palm   Palm Application prc application/x-mobipocket   Mobipocket e-book file prg     dBase program prj     ArcView ESRI (Environmental Systems Research Institute) Coordinate System Definition prl     Perl Script prn     Fixed 'Print' file format, usually a space delimited values data file pro     DOS Graphics Profile File prn     HP Printer Control Language prvkr application/pgp-keys   Private Keyring (PGP) ps application/postscript   PostScript psd application/x-photoshop   Adobe PhotoShop Document psf     Photoshop Proof Setup psid     picture/text psr application/datawindow   Project Scheduler Resource file pst     Personal storage/folder file ptlk application/listenup     pub application/x-mspublisher   MS publisher or PageMaker 2 pub   Ventura Publisher (Corel) pubkr application/pgp-keys   Public Keyring (PGP) push multipart/x-mixed-replace     pvs   Parallels Desktop Configuration File pwd     password (AIR FTP, AUTODESK) pwd     Portable Word Document pwl     Windows Password List pwp     PhotoWorks Package pxr     Pixar Image File py     Python Script

Q-R -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z

File Extn MIME Type Start
with Descr q     JB2 qd3 x-world/x-3dmf   Data file - segment 3 (Omnis Quartz) qd3d x-world/x-3dmf     qif     Quicken Interchange format qrt application/quest   Qrt ray tracing graphics qt video/quicktime   QuickTime qxd application/quarkxpress   QuarkXpress Document qfx   Quicken Transfer Format qxp application/quarkxpress   QuarkXpress Project R ra audio/x-realaudio   Music (RealAudio) raf     digital camera - Fuji CCD-RAW Graphic File ram audio/x-pn-realaudio, video/x-pn-realvideo   RealMedia Metafile rar     WinRAR Compressed Archive (Roshal ARchive) ras image/x-cmu-raster   Sun Raster Format (raster) raw     animated picture or Raw Image File rax audio/   RealAudio 10 - RealMedia Streaming File rdf   Resource Description Framework - Meta about resources on the web. See web 3.0. rfa   Revit Family File - 3D model - Autodesk rft text/richtext, text/rtf, application/rtf, application/msword   DCA-RFT -Document Content Architecture, Revisable Form Text rgb image/x-rgb   RGB Color Image rib     RenderMan 3D data rip     Quincy for Win32 - Abnormal Termination Report rip image/rip   Graphics (Remote Access) rle     Windows/OS/2 Bitmap (picture) rm application/vnd.rn-realmedia
audio/x-pn-realaudio
  Real Media rmf     Rich Map Format - used in various 3-D games to store maps rmf audio/x-rmf   Rich Music Format audio file from Beatnik rmi audio/mid   MIDI File rmvb application/vnd.rn-realmedia-vbr   RealVideo Variable Bit Rate FIle rng application/ringing-tones
application/vnd.nokia.ringing-tone   Nokia Phone Ringtone File roff application/x-troff   Troff rol     sound rpm audio/x-pn-realaudio-plugin   Real Audio Plugin and RedHat Package Manager rrf application/x-InstallFromTheWeb     rsrc     Mac Resource File rss     Rich Site Summary or "Really Simple Syndication". A lightweight XML format designed for sharing news headlines. rtc application/rtc     rte     Magellan GPS Route file rtf application/rtf   Rich Text Format (Microsoft) rtttl text/richtext   Ring Tones Text Transfer Language File rtx text/richtext   MIME Richtext format (see also rtf) rtx     extended ringtone format - Mobil Phone rtsp application/x-rtsp   QuickTime Real-Time Streaming Protocol File rx     Hummingbird X Web Remote Activation

S -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z

s3m     sound sam     Ami Pro sav     SPSS Data File sb application/x-xsb   Superbook sbn     ArcView Spatial Index For Read-Write Shapefiles (GIS) sbx application/x-xsb   ArcView Spatial Index For Read-Write Shapefiles sca application/x-supercard   Datafile (SCA) scm     ScreenCam scp text/x-palm-scp   Palm Network Script File scp text/x-palm-scp   Palm Network Script File scr     Screen Font scr     Screen Saver (executable) scx     image sdn     shell archive sdp application/sdp   Scalable Multicast (RealNetworks) sea     Self Extracting Archive ser application/java-
serialized-object     ser     Metamail Server File sf     IRCAM Sound sgi     picture sgl     SCODL sgm text/x-sgml   Standard Generalized Markup Lang (SGML) sgml text/x-sgml   Standard Generalized Markup Lang (SGML) sh application/x-sh   SH Script shar application/x-shar   Sh Shar shg     image shk     compressed (Mac) shp     SRI GIS & Mapping Software Shape File - ArcView shn     Shorten Audio Compression File shx     ArcView DataBase Index shtml magnus-internal/parsed-html     shw application/presentations   Presentation (Harvard Graphics 2.0 - CorelShow) sif     Windows NT Setup File sig application/pgp-signature   Detached signature file (PGP) silo model/mesh     sit application/x-stuffit   StuffIt - Macintosh Compression Format. By Aladdin for Mac. sitx application/x-stuffit   StuffIt X file format integrates compression with security and safety options. By Aladdin for Mac. sithqx     StuffIt BinHex Archive skd application/x-koan     skm application/x-koan     skp application/x-koan     skr application/pgp-keys   Private Keyring (PGP) skt application/x-koan     sla     Scribus document (page layout) slk     (.SYLK) Symbolic Link WingZ/Excel/Lotus (old MultiPlan form) smi     Self Mounting Image file (Disk Copy Apple) smil application/smil   SMIL Synchronized Multimedia Integration Language. App:RealPlayer smf     Standard MIDI File smf     OpenOffice.org Formula sml application/smil   SMIL Synchronized Multimedia Integration Language smp application/studiom   Sample (sound file) snd audio/basic   8-bit u-law [PCM] / 8000 Hz Audio snp application/vnd.ms-access   MS Access Snapshot spc text/x-speech   SpchComp Encoded Speech/Audio spc application/x-pkcs7-certificates   PKCS #7 Certificate spc text/x-palm-spc   Palm Configuration File spl application/futuresplash   FutureSplash from FutureWave Sftwr spo   SPSS Statistical Output File spr application/x-sprite   Document letter (Sprint) sprite application/x-sprite     spss   SPSS Script File sql     Structured Query Lang sqz     squeeze for MSDOS src application/x-wais-source   WAIS Source srv   BNBSURVEY Configuration File stk application/hstu     stm     Microsoft - Exchange Server Streaming Store stm     The .stm extension tells an NT web server (Site Server 3.0) to look for #include directives. stream audio/x-qt-stream     stw     OpenOffice Template sty application/msword   MS Word Style sheet sum   Stata Checksum File sup   Supplemental Data, Usually a form of user dictionary. sv4cpio application/x-sv4cpio   SVR4 CPIO sv4crc application/x-sv4crc   SVR4 CPIO w/CRC svf image/vnd     svg image/svg+xml   Scalable Vector Graphics svh image/svh     svr x-world/x-svr   Compressed Virtual World swa application/x-shockwave-audio, application/x-director   Shockwave Audio swf application/x-shockwave-flash
image/vnd.rn-realflash   Macromedia Flash Format File for animations sxc     OpenOffice Spreadsheet sxw     OpenOffice syl application/sylk   SYLK - Symbolic Link WingZ/Excel/Lotus (old MultiPlan form sys application/octet-stream   PC System File

T-U -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z

File Extn MIME Type Start
with Descr t application/x-troff   Troff tab     Tab separated Text (usually .tsv) talk application/talker, text/x-speech   Text to Speech tar application/x-tar   4.3BSD Tar targa image/targa   Targa Image File taz     Unix Tar.Z Archive tbk application/toolbook   Memo backup (dBASE IV - FoxPro) tcl application/x-tcl   TCL Script tda text/x-palm-tda   ToDo Archive (Palm) tdo     compressed tex application/x-tex   TeX Source texi application/x-texinfo   Texinfo texinfo application/x-texinfo   Texinfo tga image/targa   Targa/Truevision Image File tgz application/x-gzip   UNIX GTar Arvhive tif image/tiff   TIFF - Tag Image File Format. Includes GeoTIFF (lossless storage format) tiff image/tiff   TIFF - Tagged Image File Format tlb     Type Library (SPSS, OLE, Visual C++) tlk application/x-tlk     tmv application/x-Parable-Thing   Template (TextMaker) toc application/vnd.framemaker   FrameMaker TOC tor     Lomax Software Info File tor-
rent application/x-bittorrent   BitTorrent Metainfo File. Shareaza, BitComet tpg     National Geographic TOPO! mapsmapXchange Document tpo     National Geographic TOPO! mapsmapXchange Document tpp     TOPO! reference file tps     Temporary Postscript - FrameMaker tr application/x-troff   Troff trm application/x-msterminal   MS terminal trn     TeleChart trendline file trn     SQL Server Transaction Backup and others (Pagemaker, Quattro, ...). ts     terminal settings (eXceed telnet) tsi audio/tsplayer     tsp application/dsptype   Windows Telephony Service Provider tsv text/tab-separated-values   Tab Separated Values tsz   TOPO! mapping software ttf     TrueType Font tx8     DOS Text txt text/plain   Plain Text txt application/wordperfect   WordPerfect 6-11 U u98     Urdu 98 Document u3p     U3 Smart Application for SanDisk U3 SmartDrive. zip format with .exe uc2     UltraCompressor II compressed archive UDF   Universal Disk Format - This is a file system coding standard for CD's and DVDs. I have never seen a file with this extension type. udf   SQL User Defined Function Script file. udf   Excel user defined function. uin application/x-icq   ICQ 2001+ Saved ICQ Contact Information ul     sound um     uuencoded upd     Universal Print Driver upt     Magellan GPS WayPoint (POI) file url application/x-url wwwserver/redirection application/internet-shortcut   Uniform resource Locator (Internet Address) ustar application/x-ustar   IEEE Std1003.2 (``POSIX'') Tar utl     sound uu     uuencoded (7-bit) uud     uudecoded uue     uuencoded V -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z File Extn MIME Type Start
with Descr v5d application/vis5d   5-D data set visualization vat     video audio tool vbd application/activexdocument   ActiveX file vcs text/x-vcalendar   Personal Data Interchange (PDI) Calendar entry - Outlook vcd   VisualCAD Drawing file vcd application/x-cdlink   VirtualDrive CD Image File vcf text/x-vcard   vCard (Business Card) vdo video/vdo   VDOLive Script Video image (Story Board) vgm video/x-videogram     vfd     Virtual Floppy Drive Image vgp video/x-videogram-plugin     vgx video/x-videogram     vic     VICAR (Video Image Access and Retrieval) raster image vis     Visual Importer Script viv video/vnd.vivo   VivoActive Player Video file vivo video/vnd.vivo     vlc application/videolan   VLC Media Player Data. vmd application/vocaltec-media-desc     vmf application/vocaltec-media-file   Font characteristics (Ventura Publisher) vnt text/x-vnote   Mobile Phone vNote File - QUOTED-PRINTABLE QP format vob video/dvd, video/mpeg   DVD Video Movie File voc     sound vox audio/voxware   Vox Audio vqe audio/x-twinvq-plugin   Yamaha Sound-VQ Locator file vqf audio/x-twinvq   Yamaha Sound-VQ file vql audio/x-twinvq   Yamaha Sound-VQ Locator file vrml model/vrml   Virtual Reality Modeling Language   vro     DVD Recorder File vrt x-world/x-vrt     vsd     Visio Drawing vss     Visio Stencil vst     Visio Template vst     Photoshop Elements vtp     VT420 profile (Rumba VT420 (SPRY Telnet) session profile vts workbook/formulaone   Forumle One - A Java Spread sheet and report generator from Tidestone vxd     Virtual Device Driver W -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z wab     Windows (Outlook) Address Book waf plugin/wanimate   Mayim's WAF Compiler file for interactive 3D with Walkabout browser plug-in waf     MS IE Web Archiv (on Mac) wan plugin/wanimate     wav audio/x-wav, audio/wav   Windows Audio File WAVE format wax audio/x-ms-wax   Windows Media Audio Redirector to WMA file. wb     white board wb2     QuatroPro wbmp image/vnd.wap.wbmp   Wireless Bitmap File Format - Mobil phones webm   Compressed video file created using the WebM format, an open, high-quality video standard; stores video compressed using VP8 technology. wi image/wavelet     wid application/x-DemoShield   Width table (Ventura Publisher) wis application/x-InstallShield     wk1     Lotus 1-2-3 Worksheets wks application/x-msworks   MS Works or Lotus 1-2-3 Worksheets wkz     for Wingz spreadsheet from Informics wlt application/x-mswallet   eWallet file wm video/x-ms-wm     wma audio/x-ms-wma   Windows Media Audio. Stored in ASF. wme     Windows Media Encoder Session Profile wmf image/x-wmf   Windows MetaFile vector graphics wmf image/x-msmetafile   Windows MetaFile (metafile) wml text/vnd.wap.wml   Wireless Markup Language File wml text/wml   Website META Language File wmv video/x-ms-wmv   Windows Media Video (Stored in ASF format). Use Windows Media Player on Windows and Flip4Mac WMV to play wich QuickTime on a Mac. woff application/font-woff   Web Open Font Format File wp application/wordperfect   WordPerfect wpc application/wpc   Text-format converters used 1990-1997 by MS Word and Write wpc application/pcms_wp   WordPerfect Character Mapping File wpd,
wp5 application/wordperfect5.1, application/wordperfect6, application/wordperfect8   Document (WordPerfect) wpf     WordPerfect (variation is .WP) wpg     WordPerfect Graphics (metafile) wps application/vnd.ms-works
application/x-msworks-wp   MS Works wpt     Magellan GPS WayPoint (POI) file wri application/x-mswrite   Write format (MS Windows) wrl     Cosmo Player VRML Worlds wrl model/vrml, x-world/x-vrml   Plain Text VRML File wrz x-world/x-vrml     wsd     WordStar wtx audio/x-wtx, audio/wtx     wvx video/x-ms-wvx     X-Z -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z File Extn MIME Type Start
with Descr xbm image/x-xbitmap   X Bitmaps xdr video/x-videogram     xla application/vnd.ms-excel   MS Excel (Add in) xlam application/vnd.ms-excel.
addin.macroEnabled.12   MS Excel 2007 add-In xlc application/vnd.ms-excel   MS Excel (Chart) xlm application/vnd.ms-excel   MS Excel Macro xlr MS Works xls application/vnd.ms-excel \xD0CF
11E0A1 MS Excel xlsm application/vnd.ms-excel.
sheet.macroEnabled.12   MS Excel 2007 XML macro-enabled Workbook xlsx application/vnd.openxmlformats-
officedocument.spreadsheetml.sheet \X50 4B 03 04 MS Excel 2007 XML Workbook xltx application/vnd.openxmlformats-
officedocument.spreadsheetml.template   MS Excel 2007 XML Template xlt application/vnd.ms-excel   MS Excel (template) xlw application/vnd.ms-excel   MS Excel (workbook) xm     sound xml text/xml   Extensible Markup Language xpi application/x-xpinstall   Mozilla/Firefox Extension Archive xpm image/x-xpixmap   X Pixmap format xsb application/x-xsb   Superbook xsl     Extensible Style Language xtd   XML Type Definition xul application/vnd.mozilla.xul+xml
text/xul   XML User Interface Language xwd image/x-xwindowdump   X Window Dump (xwd) xyz chemical/x-pdb   ASCII RPG Maker Graphic Format xy     XyWrite Y y     Amiga Yabba Compressed Archive yuv     Color Space Pixel Format - (CCIR 601 4:1:1) Bitmap image Z z application/x-compress, application/x-compressed   Compressed file ASCII archive created by COMPRESS
or Gzip Z application/x-compress, application/x-compressed, application/gzip   UNIX Compressed Archive File zdl application/x-zip-compressed, application/zip, application/x-compressed   PKZIP zip   DesignPro Label Design, e.g Bus Cards, display sftwr at avery.com zoo     compressed Zoo archive zpa application/pcphoto     zw     Chinese End -> A | B | C | D | E-F | G-H | I | J-L | M | N-O | P | Q-R | S | T-U | V | W | X-Z Start With - Identifying characters at the beginning of the file. \x = Hex Char.

Notes:

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