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.
.webm - Matroska WebM video
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 numbers - Apple Numbers spreadsheet
file extension epub - Open Publication structure e-book
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 dwg - AutoCAD drawing
file extension cdr - CorelDRAW vector or bitmap graphics
file extension one - Microsoft OneNote document
file extension mp4 - MPEG-4 video file format
Recently updated file extensions
The file extension database is maintained and improved on daily basis. Here you can check last updated entries.
file extension uvw - 3D Studio MAX UVW coordinates
file extension pit - PackIt for Mac compressed archive
file extension toe - Touch Environment project
file extension package - Linux Autopackage data
file extension sc2data - Starcraft 2 A.I. game data
file extension gto - Gerber top overlay (silk screen)
file extension inv - dnaLIMS invoice data
file extension prtl - Adobe Premiere title data
file extension bld - EnergyPro data
file extension cas - i2's case notebook timeline analysis data
file extension loc - EasyGPS TerraByte location data
file extension lrl - SmartWare local resource library
file extension iai - NovaLogic item attributes info
file extension c3e - CYPE related data
file extension dnl - DNAML e-Book data
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