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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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.
.check - CASTEP check binary 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 rar - WinRAR RAR compressed archive
file extension mp4 - MPEG-4 video file format
file extension jpg - JPEG bitmap image
file extension docx - Microsoft Word Open XML document
file extension xlsx - Microsoft Excel Open XML workbook and spreadsheet
file extension epub - Open Publication structure e-book
file extension mp3 - Compressed audio and music file, mp3 songs or ringtones
file extension part - Partial download
file extension xapk - Google Android XAPK application package
file extension oxps - Microsoft OpenXPS document
file extension ris - Research Information Systems citation
file extension crypt12 - WhatsApp Messenger message database
file extension crdownload - Google Chrome incomplete download
Recently updated file extensions
The file extension database is maintained and improved on daily basis. Here you can check last updated entries.
file extension thumbdata5-1763508120_2 - Android thumbnail index
file extension vsf - Voltage SecureFile encrypted document
file extension wmz - Windows Media Player compressed skin
file extension avastvpn - Avast SecureLine license file
file extension js - JavaScript source code script
file extension mcd - VectorWorks drawing
file extension brd - EAGLE Circuit Board data
file extension report - Report
file extension nvf - Creative Labs Nomad recorded voice
file extension dst - AutoCAD sheet set data
file extension dss - Olympus Digital Speech Standard
file extension wgi - WildGame Innovations flexi video
file extension pm5 - Adobe PageMaker 5 document
file extension kml - Google Earth Keyhole Markup language data
file extension webloc - Apple Safari Internet URL
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