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Last update: 2021-10-15

File types

A file type is a classification determined by the file extension or MIME type.

You can include file types in web and email policies to control access to files. The default file types contain some common criteria. You can create additional file types.

  • To edit a file type, click Edit Edit button.

    Note

    You can only edit custom file types.

Default file type categories

File type category name File extensions MIME headers
Audio files gsm, sd2, qcp, kar, smf, midi, mid, ulw, snd, aifc, aif, aiff, m3url, m3u, wav, rm, au, ram, mp3, wmv audio/x-gsm, audio/vnd.qcelp, audio/x-midi, application/x-midi, audio/midi, audio/x-mid, x-music/x-midi, audio/basic, audio/x-adpcm, audio/aiff, audio/x-aiff, audio/x-mpequrl, audio/wav, audio/x-wav, application/vnd.rn-realmedia, audio/x-au, audio/x-pn-realaudio, audio/mpeg3, audio/x-mpeg-3, audio/x-ms-wmv
Backup files

The Backup Files category includes individual file backups and files related to backup software. Individual backup files are often generated automatically by software programs. Backup software files include incremental backups and full system backups.
asd, bak, bkp, bup, dba, dbk, fbw, gho, nba, old, ori, sqb, tlg, tmp application/octet-stream
Compressed files

Compressed files use file compression to save disk space. Compressed archive formats can also be used to compress multiple files into a single archive.
7z, alz, deb, gz, pkg, pup, rar, rpm, sea, sfx, sit, sitx, tar.gz, tgz, war, zip, zipx application/x-7z-compressed, application/x-alz, application/x-deb, application/x-gzip, application/x-newton-compatible-pkg, application/x-rar-compressed, application/sea, application/x-sea, application/x-sit, application/x-stuffit, application/gnutar, application/x-compressed, application/x-zip-compressed, application/zip, multipart/x-zip
Configuration files

Configuration files store settings for the operating system and applications. The user shouldn't open these files. The files are modified by the corresponding application when the program preferences are changed. Configuration files may also be called preference files or settings files.
cfg, clg, dbb, ini, keychain, prf, prx, psf, rdf, reg, thmx, vmx, wfc application/pics-rules, application/octet-stream, application/vnd.ms-officetheme
Database files

Database files store data in a structured format, organized into tables and fields. Individual entries within a database are called records. Databases are commonly used for storing data referenced by dynamic websites.
accdb, db, dsn, mdb, mdf, pdb, sql, sqlite application/msaccess, application/x-msaccess, application/vnd.msaccess, application/vnd.ms-access, application/mdb, application/x-mdb, chemical/x-pdb
Developer files

The developer files category contains files related to software development. These include programming project files, source code files, code libraries, header files, and class files. Compiled objects and components are also included in this category.
as, asc, c, cbl, cc, class, cp, cpp, cs, csproj, dev, dtd, f, fs, fsproj, fsx, ftl, gem, h, hpp, ise, ism, java, m, ocx, pas, pod, pro, py, r, rb, sh, src, tcl, trx, v, vbproj, vcproj, vtm, xcodeproj text/plain, text/x-c, application/java, application/java-byte-code, application/x-java-class, text/xml, text/x-fortran, text/x-h, text/x-java-source, text/x-m, application/octet-stream, text/pascal, text/x-script.phyton, application/x-bsh, application/x-sh, application/x-shar, text/x-script.sh, application/x-wais-source, application/x-tcl, text/x-script.tcl
Disk image files

Disk image files contain an exact copy of a hard disk or another type of media. They include all the files, as well as the file system information. This allows disk images to be used for duplicating disks, CDs, and DVDs. They are often used for backup purposes as well.
dmg, iso, mdf, nrg, nri, pvm, toast, vcd, vmdk application/x-cdlink
Document files

Document file format could be described as a text or binary data file type used to store formatted documents. Example: texts, pictures, clip arts, tables, charts, multiple pages, multiple documents.
doc, docx, wbk, xls, xlsx, ppt, pptx, oft, pub, msg, one, xsf, xsn, grv, mpp, mpt, acl, pip, thmx, aw, bld, blg, bvp, cdd, cdf, contact, csv, dat, dif, dmsp, efx, epub, epw, exif, exp, fdb, fxp, gbr, gpi, hdf, id2, lib, mat, mcd, menc, mw, ndx, not, notebook, out, ovf, pdx, pfc, pps, ppsx, pptm, prj, qbw, sdf, svf, tar, tsv, vcf, vdb, vxml, windowslivecontact, wlmp, xfd, xml, xsl, xslt, lit, log, lst, odt, opml, pages, rtf, sig, tex, txt, wpd, wps, pdf application/msword, application/vnd.openxmlformats-officedocument.wordprocessingml.document, application/excel, application/vnd.ms-excel, application/x-excel, application/x-msexcel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/mspowerpoint, application/powerpoint, application/vnd.ms-powerpoint, application/x-mspowerpoint, application/vnd.openxmlformats-officedocument.presentationml.presentation, application/x-mspublisher, application/onenote, application/octet-stream, application/vnd.ms-project, application/x-project, application/vnd.ms-officetheme, application/cdf, application/x-cdf, application/x-netcdf, text/comma-separated-values, text/csv, application/csv, video/x-dv, application/x-hdf, application/mcad, application/x-mathcad, application/vnd.openxmlformats-officedocument.presentationml.slideshow, application/vnd.ms-powerpoint.presentation.macroEnabled.12, image/vnd.dwg, image/x-dwg, application/x-tar, text/tab-separated-values, text/x-vcard, application/xml, text/xml, application/x-ms-reader, text/plain, application/rtf, application/x-rtf, text/richtext, application/x-tex, application/wordperfect, application/x-wpwin, application/vnd.ms-works, application/pdf
Dynamic files pl, jsp, asp, php, cgi, shtml text/x-script.perl, text/asp, text/x-server-parsed-html, text/html
Encoded files

Encoded files are files that store data in an encoded format. These include encrypted files, uncompressed archives, and binary-encoded text files. Files are often encoded for security purposes and to keep them from being corrupted during data transfers.
bin, enc, hex, hqx, mim, mime, uue application/mac-binary, application/macbinary, application/octet-stream, application/x-binary, application/x-macbinary, application/binhex, application/binhex4, application/mac-binhex, application/mac-binhex40, application/x-binhex40, application/x-mac-binhex40, message/rfc822, www/mime, text/x-uuencode
Executable files exe, cmd, bat, com application/bat, application/x-bat, application/x-msdos-program, application/textedit, application/octet-stream, text/plain
Image files bmp, gif, jpeg, jpg, pcx, png image/bmp, image/x-windows-bmp, image/gif, image/pjpeg, image/jpeg, image/x-pcx, image/png
Page layout files

Page layout files are documents that may contain both text and image data. They also include formatting information, which defines the page size, margins, and how content is organized. Page layout documents are often used for creating printable publications, such as newspapers, magazines, and brochures.
idml, indd, inx, isd, mdi, pct, pdf, pmd, ptx, pub, qxb, qxd, qxp, rels, xps image/x-pict, application/pdf, application/x-mspublisher, application/octet-stream, application/vnd.ms-xpsdocument
Plugin files

Plugin files provide extra features and functionality to existing programs. They are commonly used by image, video, and audio editing applications, as well as web browsers. Plugins are also referred to as add-ons and extensions.
8bi, arx, crx, plugin, vst, xll application/x-visio, application/excel,application/vnd.ms-excel, application/x-excel
System files

The system files category includes files related to macOS, Windows, and Linux operating systems. Some examples include system libraries, icons, themes, and device drivers. Files output by the system are also included in this category.
bashrc, cab, cpl, cur, dll, dmp, drv, hlp, ico, key, lnk, msp, prf, profile, scf, scr, sys application/vnd.ms-cab-compressed, application/octet-stream, application/x-msdownload, application/hlp, application/x-helpfile, application/x-winhelp, image/x-icon
Video files dat, mov, avi, qt, smi, sml, smil, flc, fli, vfw, mpeg, mpg, m15, m1u, m1a, m75, mls, mp2, mpm, mp, rm, wmv, flv, swf application/octet-stream, application/x-troff-msvideo, video/avi, video/msvideo, video/x-msvideo, video/quicktime, application/smil, application/x-simile, video/flc, video/fli, video/x-fli, video/mpeg, video/x-mpeg, video/x-mpeq2a, application/vnd.rn-realmedia, video/flv, application/x-shockwave-flash
Web files

The web files category includes files related to websites and web servers. These include static and dynamic webpages, web applications, and files referenced by webpages.
alx, asax, asmx, aspx, atom, att, axd, chm, dwt application/atom+xml
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