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.
.opus - Opus audio 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 numbers - Apple Numbers spreadsheet
file extension pages - Pages document
file extension jpg - JPEG bitmap image format
file extension oxps - Microsoft OpenXPS document
file extension mp3 - Compressed audio and music file, mp3 songs or ringtones
file extension part - Partial download
file extension rar - WinRAR RAR compressed archive
file extension cdr - CorelDRAW vector or bitmap graphics
file extension mp4 - MPEG-4 video file format
file extension docx - Microsoft Word Open XML document
file extension srt - SubRip video subtitle format
file extension json - JavaScript object notation data interchange format
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 ual - Entrust unattended login credentials
file extension wd2 - Info Select database
file extension fi - Flash Image image
file extension sdkmesh - Microsoft DirectX vertex mesh
file extension migitallock - Migital encrypted data
file extension vs2 - Corel VideoStudio 2 data
file extension sks - Show.kit template
file extension modelproj - Microsoft Visual Studio modeling project
file extension edl - Edit Decision List
file extension fp - FinePrint saved or output data
file extension m-jpeg - M-JPEG data
file extension hdr - Photomatix HDR image
file extension hfx - HotFax data
file extension xm3 - Examiner Corporation assessment item bank
file extension rwl - Leica D-Lux 4 RAW image
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