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Applies to: Microsoft Windows (All versions)
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File extension?

A file extension is a suffix to the name of a computer file, which defines and determines easily the file's generic type. In Windows and DOS operating system file extension is a requirement whereas, in some other operating system such as UNIX it is optional. Usually the file extension consists of two, three or four characters following a period.
Recently updated file extensions

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.3ds - Graphic file type

.3gp - Video file type

.3gpp - Video file type

.7z - Archive file type

.ace - Archive file type

.ai - Graphic file type

.aif - Audio file type

.aiff - Audio file type

.air - Executable file type

.all - Audio file type

.amr - Audio file type

.ape - Audio file type

.asf - Audio file type

.asx - Video file type

.audiocd - Audio file type

.avi - Video file type

.bad - Database file type

.bat - Executable file type

.bin - Disk Image file type

.bmp - Image file type

.bup - Backup file type

.cab - Archive file type

.cbr - Archive file type

.cda - Audio file type

.cdl - Configuration file type

.cdr - Image file type

.chm - Executable file type

.cmd - Executable file type

.config - Configuration file type

.cr2 - Graphic file type

.crdownload - Miscellaneous file type

.csv - Database file type

.cue - Disk Image file type

.daa - Disk Image file type

.dat - Data file type

.dbx - Text file type

.dif - Data file type

.divx - Video file type

.dll - Data file type

.dm - Audio file type

.dmg - Disk Image file type

.doc - Text file type

.docx - Text file type

.dss - Audio file type

.dvf - Audio file type

.dwg - Graphic file type

.dxf - Graphic file type

.edb - Database file type

.eml - Email related file type

.eps - Graphic file type

.exe - Executable file type

.ext - Miscellaneous file type

.fla - Internet related file type

.flv - Video file type

.fwa - Miscellaneous file type

.gif - Image file type

.gpx - Data file type

.gz - Archive file type

.hex - Source code and script files

.hqx - Archive file type

.htm - Internet related file type

.html - Internet related file type

.ico - Graphic file type

.idx - System file type

.ifo - Video file type

.iges - Graphic file type

.indd - Graphic file type

.ini - Text file type

.iso - Disk Image file type

.jar - Archive file type

.java - Source code and script files

.jpeg - Image file type

.jpg - Image file type

.js - Internet related file type

.lnk - System file type

.log - Text file type

.lzh - Archive file type

.m4a - Audio file type

.m4b - Audio file type

.m4p - Audio file type

.m4v - Video file type

.magnet - Miscellaneous file type

.map - Game file type

.mcd - Emulator file type

.mdb - Database file type

.mid - Audio file type

.mkv - Video file type

.mov - Video file type

.mp2 - Audio file type

.mp3 - Audio file type

.mp4 - Video file type

.mpeg - Video file type

.mpg - Audio file type

.MPO - Miscellaneous file type

.msg - Email related file type

.msi - Plugin file type

.mso - Audio file type

.mswmm - Text file type

.nfo - Text file type

.nrg - Disk Image file type

.odt - Text file type

.ofx - Graphic file type

.ogg - Audio file type

.ost - Text file type

.pc - Data file type

.pdb - Data file type

.pdf - Text file type

.pict - Image file type

.pnf - System file type

.png - Graphic file type

.pps - Data file type

.ppt - Text file type

.pptx - Text file type

.prf - Configuration file type

.ps - Graphic file type

.psd - Graphic file type

.pst - Data file type

.ptb - Data file type

.pub - Graphic file type

.qbb - Backup file type

.qbw - Data file type

.qf - Miscellaneous file type

.qxd - Graphic file type

.ram - Audio file type

.rar - Archive file type

.raw - Image file type

.rm - Video file type

.rmvb - Video file type

.rtf - Text file type

.sea - Archive file type

.ses - Audio file type

.sfv - Data file type

.sit - Archive file type

.sitx - Archive file type

.sql - Source code and script files

.sr0 - Miscellaneous file type

.ss - Data file type

.sub - Text file type

.swf - Internet related file type

.tag - Data file type

.tar - Archive file type

.text - Text file type

.tgz - Archive file type

.tif - Image file type

.tiff - Image file type

.TOR - Miscellaneous file type

.torrent - Internet related file type

.ts - Video file type

.ttf - Font file type

.txt - Text file type

.uif - Disk Image file type

.vb - Source code and script files

.vcd - Disk Image file type

.vcf - Text file type

.vob - Video file type

.wav - Audio file type

.win - Data file type

.wma - Audio file type

.wmp - Image file type

.wmv - Video file type

.wpd - Text file type

.wps - Text file type

.xdw - Miscellaneous file type

.xlm - Configuration file type

.xls - Text file type

.xlsx - Text file type

.xtm - Data file type

.zip - Archive file type

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