File extension or filename suffix is usually three, four or more characters at the end of computer file names divided by a dot.
File extensions are useful to computer programs and operating systems like Windows or macOS (OS X), and basically telling them, what kind of data and file type they are working with and what associated program opens the file.
File-extensions.org library contains thousands of file extensions and the database is still growing.
A large number of file type entries have detailed descriptions, including their current use and the list of programs that can open, view, edit, convert or play unknown file you search for.
Latest articles
Check out the recently published articles related to file extensions, tutorials or software tips.
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- Search file extensions from Windows context menu - Directly search File-Extensions.org's database by single click from Windows context menu upon an unknown file
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- More information about CRDOWNLOAD files - CRDOWNLOAD file analysis.
Begin your search by entering the source and target file type specified by their file extensions. For example simply try flac to mp3.
File extension of the day
Random daily pick from File-Extensions.org's database.
.57 - Creo Elements/Pro versioned data
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 apk - Google Android application package
file extension pdf - Adobe Portable document format
file extension mp4 - MPEG-4 video file format
file extension rar - WinRAR RAR compressed archive
file extension jpg - JPEG bitmap image
file extension exe - Program executable
file extension docx - Microsoft Word Open XML document
file extension xlsx - Microsoft Excel Open XML workbook and spreadsheet
file extension download - Chrome partial download
file extension mp3 - Compressed audio and music file, mp3 songs or ringtones
file extension ris - Research Information Systems citation
file extension part - Partial download
file extension rpt - Report
file extension xapk - Google Android XAPK application package
file extension epub - Open Publication structure e-book
Recently updated file extensions
The file extension database is maintained and improved on daily basis. Here you can check last updated entries.
file extension alz - ALZip compressed archive
file extension xsd - XML schema description
file extension 2020 - Any data file created in 2020
file extension sc2replay - Starcraft 2 game replay
file extension 3mf - 3D Manufacturing Format
file extension ff - Call of Duty FastFile format
file extension easm - SolidWorks eDrawing assembly data
file extension pkl - Microsoft Exchange migration wizard packing list
file extension toml - TOML source code
file extension iqy - Microsoft Excel Internet query
file extension qmg - Samsung theme picture image - qmage file format
file extension piskel - Piskel sprite
file extension ndf - Microsoft SQL Server secondary data
file extension nicnt - Native Instruments KONTAKT library
file extension tt2 - Microsoft Office 2013 installation
