File extension is usually three or more characters at the end of the computer file name. File extensions are useful for computer operating systems, like Microsoft Windows or Apple MAC OS X, and basicaly tell them, what kind of data file it is and with which application associated it is.
We have collected a huge amount of informations and created searchable file extension list. At present the File-Extensions.org library contains thousands of file extensions and with each day the database is growing. A large number of file type entries have detailed descriptions, including their current use and a list of applications associated with it and which can handle the unknown file type, you were searching for.
If you encounter a file in your computer with an unknown file extension, then you are at the right place. You can check our database for informations about file extension you were looking for, including list of associated applications.
Simply use the search box at the top-left corner of each page to check our database for a specific file extension. You may also browse our database in alphabetical order using the navigation menu at the top.
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File extension of the day
Random daily pick from file-extensions.org database.
.dat - Program data file
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.
Popular file extensions
List of the most visited file extension records. Click on the link below for more details and software associations.
file extension pdf - Adobe Portable document format
file extension flac - Audio files encoded by Flac - free lossless audio codec
file extension part - Partial download file
file extension epub - Open Publication structure eBook file
file extension pages - iWork Pages document file
file extension rar - WinRAR RAR compressed archive
file extension 3ga - Audio file for wireless networks
file extension pub - Microsoft Publisher document file
file extension mobi - Mobipocket eBook Format
file extension apk - Google Android package file
file extension 002 - Compressed file from a multi-volume archive (part 2)
file extension gadget - Windows sidebar gadget file
file extension dwg - AutoCAD Drawing file
file extension menc - Microsoft Windows Mobile encrypted file
file extension json - Mozilla Firefox bookmark backup file
file extension xlsx - Microsoft Excel 2007, Excel 2010 and Excel 2013 Open XML workbook file
file extension 264 - H.264/MPEG-4 AVC video file
file extension dlc - JDownloader download link container
file extension bin - CD/DVD binary image file
file extension xls - Microsoft Excel 97 to 2003 workbook file
Recently updated file extensions
Existing and new file extensions are updated or added very often. The database is maintained and improved every day.
file extension raw - Digital camera photo RAW image format
file extension pcd - Kodak Picture CD multiresolution image
file extension ce1 - Computer Eyes Raw image format
file extension ce2 - Computer Eyes Raw image format
file extension sd0 - Dali Raw image
file extension st8 - SBIG CCD camera ST-x photo
file extension ycbcra - Raw Y Cb Cr and alpha sample file
file extension mef - Mamiya ZD MEF image file
file extension pef - Pentax Digital Camera Raw Image Format
file extension mrw - Minolta Dimage RAW image file
file extension x3f - Sigma Camera RAW picture file
file extension dc2 - Kodak DC25 Digital Camera file
file extension crw - Canon digital camera RAW image format
file extension nrw - Nikon RAW image file
file extension erf - Epson camera RAW file
file extension ra2 - Flare RAW file
file extension gray - Raw gray samples bitmap image
file extension grey - Raw image format
file extension st7 - SBIG CCD camera ST-x image
file extension st5 - SBIG CCD camera ST-x image