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File Formats - Descriptions and Meanings

File formats - description and meaningsThere are a huge number of different computer file formats available - here we describe some of the most popular - Click on a file extension for more detailed information.

If you want to convert a file from one format to another we make that super-easy to do at Zamzar - just upload your file and let us do all the hard work. Zamzar supports conversion between most of the formats below !

We're adding support for new formats all the time - if there's a format that you'd like us to support why not contact us and we'll do our best to add it.

Click a category to see details of the file formats:  
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Document file formats
(Back to top)
 File format
Author
What programs use it ?
csv - Comma Separated ValuesMicrosoftThe CSV file format is very simple and supported by almost all spreadsheets and database management systems
djvu - DjVu FileAT&T Labs - ResearchDjVuLibre DjView
LizardTech Browser Plug In
MacDjView Desktop Viewer
WinDjView
doc - Microsoft Word DocumentMicrosoftAbiWord
Apple Pages
AppleWorks
KWord
Microsoft Word
StarOffice
docx - Microsoft Word 2007 DocumentMicrosoftMicrosoft Word 2007
Microsoft Word 2008 (MAC)
OxygenOffice Professional (Linux)
Word 2010
eml - E-MailMicrosoftApple Mail
IncrediMail
Microsoft Outlook
Microsoft Windows Live Mail
Mozilla Thunderbird
eps - Encapsulated PostScriptAdobe SystemsAdobe Acrobat
Adobe Illustrator
Adobe Photoshop
CorelDRAW
Microsoft Digital Image Editor
QuarkXPress
html - Hypertext Markup LanguageWorld Wide Web Consortium & WHATWGAny Web Browser (e.g. Internet Explorer, Safari, Firefox, Google Chrome)
html4 - Hypertext Markup LanguageWorld Wide Web Consortium & WHATWGAny Web Browser (e.g. Internet Explorer, Safari, Firefox, Google Chrome)
html5 - Hypertext Markup LanguageWorld Wide Web Consortium & WHATWGAny Web Browser (e.g. Internet Explorer, Safari, Firefox, Google Chrome)
key - Apple iWork '09 Keynote PresentationApple IncKeynote 5.0
Keynote 5.1
iWork '09
key.zip - Apple iWork '05-'08 Keynote Presentation 
mdb - Microsoft Access DatabaseMicrosoftMDB Viewer Plus
Microsoft Access
mpp - Microsoft Project DocumentMicrosoftMicrosoft Project
msg - Encapsulated email messageMicrosoftEncryptomatic MsgViewer Pro
Microsoft Outlook
Priasoft MSG File Viewer and Assessor
numbers - Apple iWork '09 Numbers SpreadsheetAppleApple iWork
numbers.zip - Apple iWork '08 Numbers Spreadsheet 
odp - OpenDocument presentationSun Microsystems and OasisCorel WordPerfect
KOffice
Lotus Symphony
NeoOffice
OpenOffice Impress
StarOffice
ods - OpenDocument spreadsheetSun MicrosystemsMicrosoft Office 2007
Microsoft Office 2010
OpenOffice Calc
odt - OpenDocument spreadsheetSun MicrosystemsMicrosoft Office 2007
Microsoft Office 2010
OpenOffice Writer
pages - Apple iWork '09 Pages DocumentApple IncPages 4.0
Pages 4.1
Pages 4.2
iWork '09
pages.zip - Apple iWork '05-'08 Pages Document 
pdf - Portable Document FormatAdobe SystemsAdobe Viewer
Ghostscript
Ghostview
Xpdf
gPDF
pps - Microsoft PowerPoint PresentationMicrosoftApple Keynote
Microsoft PowerPoint
OpenOffice
ppsx - Microsoft PowerPoint 2007 Slide ShowMicrosoftApple Keynote
Microsoft PowerPoint
OpenOffice
ppt (1997-2003) - Microsoft PowerPoint Presentation 
ppt - Microsoft PowerPoint PresentationMicrosoftApple Keynote
Microsoft PowerPoint
OpenOffice
pptx - Microsoft PowerPoint 2007 PresentationMicrosoftApple Keynote
Microsoft PowerPoint
OpenOffice
ps - PostScriptAdobe SystemsAdobe Acrobat
Adobe Photoshop
Quark Xpress
pst - Personal Folder File 
pub - Microsoft PublisherMicrosoftMicrosoft Publisher
rtf - Rich Text FormatMicrosoftAbiWord
Kword
Microsoft Word
TextEdit
WordPad
swf - Macromedia Flash Format FileFutureWave SoftwareAdobe Flash Player (standalone program)
Web browser with the Flash plug-in installed
txt - Text DocumentVariousNotepad
TextEdit
WordPad
vsd - Visio DrawingMicrosoftMicrosoft Internet Explorer
Microsoft Visio
Microsoft Visio Viewer
wks - Microsoft Works SpreadsheetMicrosoftMicrosoft Works
wpd - WordPerfect DocumentCorelCorel WordPerfect
Microsoft Word
OpenOffice Writer
wps - Microsoft Works DocumentMicrosoftMicrosoft Word
Microsoft Works Word Processor
NeoOffice
OxygenOffice
Works Converter
xls - Microsoft Excel SpreadsheetMicrosoftMicrosoft Excel
Microsoft Excel Viewer
OpenOffice
xlsx - Microsoft Excel 2007 SpreadsheetMicrosoftMicrosoft Excel 2007
OpenOffice
OxygenOffice Progessional (Linux)
xlr - Works Spreadsheet or Chart (Microsoft Corporation)MicrosoftMicrosoft Works
xml - Extensible Markup LanguageWorld Wide Web ConsortiumChrome
Firefox
Microsoft Internet Explorer
Microsoft Office InfoPath
Notepad
Oxygen XML Editor
Safari
xps - Open XML Paper SpecificationMicrosoftChrome
Firefox
Microsoft Internet Explorer
Microsoft XPS Viewer
Safari

 
Image file formats
(Back to top)
 File format
Author
What programs use it ?
ai - Adobe Illustrator ArtworkAdobeAdobe Photoshop
Adobe Reader
Corel Paint Shop Pro
bmp - Windows bitmapMicrosoftAdobe Photoshop
MS Paint
Microsoft Photo Editor
Paintbrush
cdr - Corel Draw Vector drawing fileCorel CorporationAdobe Illustrator
Adobe Reader
Corel PaintShop Photo Pro
Corel WordPerfect Office
LibreOffice
cr2 - Canon RAW version 2Canon Inc.Adobe Photoshop
Adobe Photoshop Lightroom
Paint Shop Pro
Picasa
digiKam
emf - Windows Enhanced MetafileMicrosoftMicrosoft Publisher
Microsoft Word
QuarkXPress
gif - Compuserve graphics interchangeCompuServeAdobe Photoshop
Apple Preview
Corel Paint Shop Pro
Microsoft Windows Photo Gallery Viewer
ico - Windows IconMicrosoftAdobe Photoshop
Microsoft Paint
Windows Picture and Fax Viewer
jpg - JPEG compliant imageThe JPEG CommitteeAdobe Photoshop
Apple Preview
Corel Paint Shop Pro
Microsoft Windows Photo Gallery Viewer
mdi - Microsoft Document ImagingMicrosoftMicrosoft Office Imaging
nef - Nikon Electronic FormatNikon Inc.Adobe Photoshop
Adobe Photoshop Lightroom
Paint Shop Pro
Picasa
digiKam
odg - OpenDocument DrawingSun MicrosystemsLibre Office
OpenOffice Draw
pcx - Paintbrush Bitmap ImageZSoft CorporationAdobe Photoshop
Microsoft Paint
Windows Picture and Fax Viewer
png - Portable Network GraphicPNG Development GroupApple Preview
Corel Paint Shop Pro
GIMP - The GNU Image Manipulation Program (LINUX)
Microsoft Windows Photo Gallery Viewer
Safari
psd - Photoshop DocumentAdobe SystemsAdobe Illustrator CS6
Adobe InDesign CS6
Adobe Photoshop
GIMP
svg - Scalable Vector GraphicsWorld Wide Web ConsortiumAdobe Photoshop
Apple Preview
Corel Paint Shop Pro
Corel SVG Viewer
tga - Truevision Targa GraphicTruevisionAdobe Photoshop
Corel Paint Shop Pro
GIMP
Painter
thumbnail - Thumbnail image 
tiff - Tagged image file formatAldus, Adobe SystemsCyberLink PowerDVD
InterVideo WinDVD
VideoLAN VLC Media Player
Windows Media Player
wbmp - Wireless Bitmap File FormatWAP ForumAdobe Photoshop
Microsoft Paint
Windows Picture and Fax Viewer
webp - Lossily compressed image fileGoogleAdobe Photoshop
Google Chrome
Picasa
wmf - Windows MetafileMicrosoftMicrosoft Publisher
Microsoft Word
QuarkXPress

 
Music file formats
(Back to top)
 File format
Author
What programs use it ?
3ga - 3GA Multimedia File3rd Generation Partnership Project (3GPP)QuickTime Player
VLC Media Player
Windows Media Player
aac - Advanced Audio Coding FileA combination of Fraunhofer IIS, AT&T Bell Laboratories, Dolby and Sony CorporationKMPlayer
RealPlayer
VideoLAN VLC Media Player
Windows Media Player
iTunes
ac3 - AC3 Audio FileDolby DigitalQuickTime Player
VLC Media Player
Windows Media Player
aiff - Audio Interchange File FormatApple IncApple QuickTime
VLC media Player
Winamp
Windows Media Player
flac - Free Lossless Audio CodecXiph.Org FoundationReal Player
VLC Media Player
Windows Media Player
m4a - Compressed video fileAppleApple QuickTime Player
Apple iTunes
Microsoft Windows Media Player
m4r - iPhone Ringtone FileAppleApple QuickTime Player
Apple iTunes
midi - Musical Instrument Digital InterfaceVariousAudio Evolution
GarageBand
Master Tracks Pro
Sonar
mp3 - Compressed audio fileMoving Picture Experts GroupRealOne
WinAmp
Windows Media Player
iTunes
ogg - Ogg Vorbis Compressed Audio FileXiph.Org FoundationApple QuickTime Player
Real Player
Windows Media Player
ra - RealMedia Streaming MediaReal NetworksRealNetworks RealPlayer
ram - RealMedia MetafileReal NetworksRealNetworks RealPlayer
rm - RealMedia Streaming MediaReal NetworksRealNetworks RealPlayer
wav - Windows audio fileMicrosoft & IBMCyberLink PowerDirector
Microsoft Windows Media Player
Roxio Creator 2009

 
Video file formats
(Back to top)
 File format
Author
What programs use it ?
264 - H.264 Raw FilesInternational Telecommunications Union and International Organization for Standardization/International Electrotechnical Commission Moving Picture Experts GroupVideoLAN VLC Media Player
3g2 - 3GPP2 Multimedia File3rd Generation Partnership Project 2Apple QuickTime Player
GOM Player
Microsoft Media Player Classic
Totem
VideoLAN VLC Media Player
3gp - 3GPP Multimedia File3rd Generation Partnership Project (3GPP)QuickTime Player
VLC Media Player
Windows Media Player
3gpp - 3GPP Multimedia File3rd Generation Partnership Project (3GPP)QuickTime Player
VLC Media Player
Windows Media Player
asf - Advanced Streaming FormatMicrosoftReal Player
VLC Media Player
Windows Media Player
avi - Windows video fileMicrosoftALLPlayer
Apple QuickTime Player
Microsoft Windows Media Player
VideoLAN VLC Media Player
f4v - Flash MP4 videoAppleFFDShow
Microsoft Windows Photo Gallery Viewer
VideoLAN VLC Media Player
Windows Media Player
flv - Flash videoAdobe Systems IncorporatedFFDShow
Microsoft Windows Photo Gallery Viewer
VideoLAN VLC Media Player
Windows Media Player
gvi - Google video fileGoogleGoogle VideoPlayer
VideoLAN VLC Media Player
Windows MediaPlayer classic
ipad - MPEG-4 (H264) Video File 
iphone - MPEG-4 (H264) Video File 
ipod - MPEG-4 Video File 
m4v - MPEG-4 Video FileAppleApple QuickTime Player
Apple iTunes
VLC Media Player
mkv - Matroska Multimedia ContainerSteve LhommeVLC Media Player
mov - Apple QuickTime MovieAppleApple QuickTime Player
CyberLink PowerDirector
Roxio Easy Media Creator
mod - Hard disk camera movieJVC/PanasonicQuicktime Player
VLC Media Player
Windows Media Player
mp4 - MPEG-4 Video FileMoving Picture Experts GroupApple QuickTime Player
Apple iTunes
Microsoft Windows Media Player
VideoLAN VLC Media Player
mpg - Moving Picture Experts Group FileISO, IECVideoLAN VLC Media Player
Windows Media Player
mts - AVCHD Video FileSony, PanasonicVideoLAN VLC Media Player
Windows Media Player
rmvb - RealVideo Variable Bit Rate FileRealNetworksRealPlayer
VLC Media Player
ts - Video Transport Stream FileMPEGVideoLAN VLC Media Player
vob - Video Object FileAppleAdobe Flash Player (standalone program)
Web browser with the Flash plug-in installed
webm - Multimedia Container FormatGoogle (Previously developed by On2, Xiph, and Matroska)Google Chrome
Mozilla Firefox
VLC Media Player
wmv - Windows Media VideoMicrosoftMPlayer
Microsoft Windows Media Player
PowerDVD
RealPlayer
VideoLAN VLC Media Player

 
e-Book file formats
(Back to top)
 File format
Author
What programs use it ?
azw - Amazon Kindle eBook FileAmazonKindle Reader
Kindle for Android
Kindle for iOS
azw3 - Amazon KF8 eBook FileAmazonKindle Fire
Kindle Reader
Kindle for Android
Kindle for iOS
cbc - eBook FormatVariousComic Book Collector
cbr - Comic Book RAR ArchiveVariousCDisplay
ComicFlow
Perfect Viewer
cbz - Comic Book Archive FileVariousCDisplay
ComicFlow
Perfect Viewer
chm - Compiled HTML Help FileMicrosoftBeyond CHM
Internet Explorer
Microsoft Reader
Mozilla Firefox
epub - Open eBook FileInternational Digital Publishing Forum (IDPF)Adobe Digital Editions
Apple iBooks
Mobipocket Reader Desktop
Sony Reader
fb2 - FictionBook 2.0 FileFictionBookApple iBooks
Calibre
Cool Viewer
lit - Microsoft eBook FileMicrosoftMicrosoft Reader
lrf - Sony Portable Reader FileSonySony Reader
lzh - Compressed Archive FileHaruyasu YoshizakiLHA
WinRAR
WinZip
mobi - Mobipocket eBookMobipocket / AmazonAmazon Kindle
Apple iBooks
Mobipocket Reader Desktop
oeb - Open eBook FileInternational Digital Publishing Forum (IDPF)Adobe Digital Editions
Apple iBooks
Sony Reader
pdb - Palm Media eBook FilePalm, Inc.ICE Book Reader
Palm Reader
pml - eBook FilePalm, Inc.Adobe Framemaker
Dropbook
MakeBook
prc - Mobipocket eBook FileMobipocketAmazon Kindle
Apple iBooks
Mobipocket Reader Desktop
rb - RocketEdition eBook FileNuvoMediaBook Designer
GEB Librarian
RB2Project

 
Compressed file formats
(Back to top)
 File format
Author
What programs use it ?
7z - 7-Zip Compressed File7-zip7Zip
WinRAR
WinZip
cab - Cabinet FileMicrosoftMakeCab
StuffIt
WinRAR
WinZip
rar - WinRAR Compressed ArchiveEugene Roshal7Zip
StuffIt
WinRAR
WinZip
tar - Tape Archive FileThe GNU ProjectApple Archive Utility
GNU Tar
StuffIt
WinZip
tar.bz2 - Bzip 2 UNIX Compressed File 
tar.gzh - Gzip Compressed Archive 
tar.gz - Gzip Compressed ArchiveThe GNU ProjectSTDU Viewer
eBook for EPOC
tcr - Psion eBook FilePsion TeklogixApple Archive Utility
GNU Tar
StuffIt
WinZip
yz1 - DeepFreezer Compressed ArchiveYamazaki ZIPPERDeepFreeezer
IZArc
TUGZip
ZipZag
zip - Compressed Archive FilePKWAREStuffIt
WinRAR
Winzip
zip1 - Compressed Archive File 

 
CAD file formats
(Back to top)
 File format
Author
What programs use it ?
dwg - AutoCAD Drawing DatabaseAutodeskAdobe Illustrator
AutoCAD
Autodesk DWG TrueView
CorelCAD
dxf - AutoCAD Drawing Interchange FormatAutodeskAdobe Illustratror
AutoCAD
CorelCAD
Open Office
PaintShop Pro