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.
.fla - Editable Adobe Flash project (animation, movie, flash application)
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 exe - Program executable
file extension mp4 - MPEG-4 video file format
file extension jpg - JPEG bitmap image
file extension rar - WinRAR RAR compressed archive
file extension docx - Microsoft Word Open XML document
file extension mp3 - Compressed audio and music file, mp3 songs or ringtones
file extension xlsx - Microsoft Excel Open XML workbook and spreadsheet
file extension part - Partial download
file extension crdownload - Google Chrome incomplete download
file extension dwg - AutoCAD drawing
file extension epub - Open Publication structure e-book
file extension png - Portable Network Graphic file
file extension aae - Apple Photos sidecar file
Recently updated file extensions
The file extension database is maintained and improved on daily basis. Here you can check last updated entries.
file extension woff2 - Web Open Font Format 2.0 package
file extension 232 - Microsoft Office installation data
file extension accda - Microsoft Access add-in
file extension accdb - Microsoft Access main database
file extension accdc - Microsoft Access digitally signed database
file extension accde - Microsoft Access compiled execute only database
file extension accdp - Microsoft Access project
file extension accdr - Microsoft Access runtime mode database
file extension accdt - Microsoft Access database template
file extension accdu - Microsoft Access database wizard
file extension accfl - Microsoft Access field template file
file extension acl - Microsoft Office automatic correction list
file extension acp - Microsoft Office Assistant preview data
file extension ade - Microsoft Access compiled project
file extension adml - Microsoft administrative language-specific XML template
