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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- Best programs for finding duplicate files - Programs for file duplicity searches
- How to open pkpass file - Additional information about pkpass files and how to open and convert them
- 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
- Show and hide file extensions in Windows 10
- 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.
.sdf - SQL Server compact edition database
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 docx - Microsoft Word Open XML document
file extension exe - Program executable
file extension xlsx - Microsoft Excel Open XML workbook and spreadsheet
file extension download - Chrome partial download
file extension ris - Research Information Systems citation
file extension part - Partial download
file extension mp3 - Compressed audio and music file, mp3 songs or ringtones
file extension rpt - Report
file extension epub - Open Publication structure e-book
file extension xapk - Google Android XAPK application package
Recently updated file extensions
The file extension database is maintained and improved on daily basis. Here you can check last updated entries.
file extension ct - IRIS CT image
file extension do - Java Servlet file
file extension keepsafe - Keepsafe folder
file extension plb - Arena Simulation Software picture library
file extension 3d - 3D drawing CAD data
file extension u2car - NFS:U2 car data
file extension yyp - GameMaker Studio project
file extension apple - Apple AppleSingle data
file extension appimage - Application portable image
file extension replay - Fortnite game replay
file extension tax2018 - TurboTax tax return 2018 file
file extension sav - Saved game file
file extension fla - Editable Adobe Flash project (animation, movie, flash application)
file extension hol - Microsoft Outlook holiday calendar
file extension fsthumb - Wondershare Filmora thumbnail cache
