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


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/

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/, 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/, 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


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/, application/x-excel, application/x-msexcel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/mspowerpoint, application/powerpoint, application/, application/x-mspowerpoint, application/vnd.openxmlformats-officedocument.presentationml.presentation, application/x-mspublisher, application/onenote, application/octet-stream, application/, application/x-project, application/, 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/, 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/, 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/

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/, 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/, 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