File-extensions.org - about this site
File extensions are usually three or four letter codes at the end of computer file names that tell to operating system (Microsoft Windows Vista, Windows XP, Windows 95/98/ME/2000,MAC OS X, Linux and Unix operating systems etc.) what kind of file they are dealing with. Tell to OS which applications can automaticaly open or edit the file.
We researched and collected a very large list of the file extensions and many with detailed explanations of each file type and the way they are used today. We have also tried to include a few of the common software programs that are associated with each of these file extension types.
If you find a file in your computer with an unknown file extension, you can look up the information about desired file extension and its file associations using File-extensions.org website.
Simply use the search box in the top-left corner of each page tosearch for a specific file extension. You may also view an alphabetical list of extensions using the starting letters above, or browse extensions by file type categories using the green navigation menu at the left side of the page.
Recently updated file extensions:
Existing and new file extensions are updated or added very often.
file extension odt - OpenOffice.org Writer text document
file extension #$- - Unknown or unassigned file extension.
file extension ost - Microsoft Outlook/Inbox offline folder
file extension torrent - BitTorrent information file
file extension art - Another Ray Tracer
file extension afm - Adobe font metrics file
file extension adi - AutoCAD device-independent binary plotter format
file extension emf - Enhanced Windows Metafile picture
file extension mif - FrameMaker interchange format
file extension pro - Pro/ENGINEER configuration file
file extension dwg - AutoCAD Drawing
file extension dwg - AutoCAD Drawing Database
file extension lasso - Lasso database driven web page
file extension pdf - Portable document format: Adobe Acrobat File
file extension zip - Compressed ZIP archive file and compressed folder
file extension wq1 - Spreadsheet; Quatro Pro for MS-DOS
file extension fm - FileMaker Pro database file
file extension fp - FileMaker Pro database file
file extension mdb - Microsoft Access database
file extension wdb - Microsoft Works database
file extension cwk - Claris Works data file
file extension agdb - ANSYS DesignSpace
file extension docx - Microsoft Word 2007 XML based document file format
file extension daf - Digital Anchor data file
file extension mkv - Matroska video-audio multimedia file
file extension mp4 - MPEG-4 file format
file extension xls - Microsoft Office Excel spreadsheet
file extension rar - WinRAR compressed archive
file extension sqx - SQX Archiver Compressed Archive file
file extension bzip2 - Compressed archive file
file extension bix - BIX compressed file archive
file extension axx - ARJ compressed file multi-volume archive
file extension arx - Compressed archive
file extension arc - Compressed file archive
file extension acp - Compressed file archive
file extension 777 - 777 compressed file archive
file extension zoo - Compressed file
file extension wba - Winace Zip File
file extension daa - PowerISO Direct-Access-Archive file
file extension amr - Adaptive Multi-Rate compressed audio
file extension cnr - Pegasus Mail mail message stored in Systemwide folder
file extension cnb - Pegasus Mail mail message stored in Noticeboard
file extension pm$ - Pegasus Mail temporary file
file extension pmu - Pegasus Mail keyboard macro
file extension bu - Pegasus Mail temporary file
file extension cnx - Pegasus Mail file
file extension §§§ - Pegasus Mail temporary file
file extension pmk - Pegasus Mail keyboard file
file extension pme - Pegasus Mail filter rule files
file extension pmc - Pegasus Mail folder cache file
file extension pfc - Pegasus Mail message cache file
file extension phc - Pegasus Mail header cache file
file extension pnx - Pegasus Mail RTF version of queued and draft message
file extension pnv - Pegasus Mail stored searches file
file extension pns - Pegasus Mail formatted signatures
file extension pnp - Pegasus Mail POP3 server side filter rule
file extension pnm - Pegasus Mail IMAP message flag status
file extension pnc - Pegasus Mail content control set definition
file extension pmx - Pegasus Mail outgoing message
file extension pmw - Pegasus Mail draft stored outgoing message
File extension of the day:
Random daily pick from file-extensions.org database.
.sxc - OpenOffice.org 1.0 Spreadsheet file
Associated application: OpenOffice Calc, OpenOffice
Help how to open: Use OpenOffice Calc (a spreadsheet application from OpenOffice suite) to open the file.
Help how to convert this file type: not available
Help how to backup this file type: not available
Database contains 1 records with the same file extension name.
Last update on November 15, 2007.
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Browsers supporting this feature: Internet Explorer 7, Firefox 2 and above versions.
For an overview of common file types,
visit the common file extensions page, which includes a list of the most important computer file formats you should know.
For an overview of unknown file types,
visit the unknown file extensions page, which includes a list of the unknown file formats. If you know function of any unknown extension, please click on Submit button at the top of page and contact us.
Show file extensions at your Windows operating system
By default, file extensions are disabled at Windows systems. What you can't see and you don't know about it, can hurt you one day. This allows virus and malicious software writers to distribute executable files disguised as something non-executable. For example, an .exe file might appear to be an common text file (some-filename.txt[.exe] with hidden extension). We think that hidding file extensions by default is wrong decision from Microsoft, but they are still disabled also at new Windows Vista. For more information visit Executable file extensions page.
Most searched file extensions:
file extension daa - PowerISO Direct-Access-Archive
file extension rar - RAR compressed archive - backup file
file extension bin - Binary file (mostly disc image file)
file extension uif - MagicISO Universal Image Format File
file extension torrent - BitTorrent information file extension
file extension 7z - Compressed archive file extension (like .zip, .rar etc.)
file extension flac - Audio files encoded by Flac (lossless audio codec)
file extension thm - Sonyericsson mobile phone theme file
file extension amr - Adaptive Multi-Rate compressed audio
file extension 3gp - Multimedia files for wireless networks, mobile phones videos etc
file extension pdf - Portable document format: Adobe Acrobat File
file extension 3dr - 3DMark result
file extension wps - Microsoft Works document
file extension flv - Flash video
file extension wps - RockBox (MP3 player firmware) theme file