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.
.cfa - Adobe multimedia cache
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 xlsx - Microsoft Excel Open XML workbook and spreadsheet
file extension rar - WinRAR RAR compressed archive
file extension epub - Open Publication structure e-book
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 crdownload - Google Chrome incomplete download
file extension mp3 - Compressed audio and music file, mp3 songs or ringtones
file extension part - Partial download
file extension dwg - AutoCAD drawing
file extension one - Microsoft OneNote document
file extension cdr - CorelDRAW vector or bitmap graphics
Recently updated file extensions
The file extension database is maintained and improved on daily basis. Here you can check last updated entries.
file extension circuit - KTechlab circuit design
file extension trn - STN Express transcript text
file extension case - EnSight results data
file extension std - OpenOffice.org drawing template
file extension 787 - Pro/Engineer WildFire data
file extension vsv - Virtual machine's memory saved-state
file extension gnc - Great Notions embroidery data
file extension zipfs - 18 Wheels of Steel: Across America game data
file extension emm - MikuMikuDance MikuMikuEffect data
file extension r73 - RAR compressed files from a multi-volume archive
file extension tr2 - Borland Turbo Debugger session-state settings
file extension vdf - Gothic game data
file extension mdpf - Mac modem preferences
file extension ubj - Universal Binary JSON format
file extension mftpkg - MacFamilyTree project
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