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.
.cert - Netscape certificate index data file
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 mxdl - Maxthon incomplete download
file extension egt - EagleGet incomplete download
file extension apk - Google Android application package
file extension eda - Creo View ECAD PCB schematics
file extension elt - Cimatron solid 3D model
file extension elt - NEPLAN topology data
file extension ftw - Family Tree Maker project
file extension jpg - JPEG bitmap image
file extension wgt - Tizen web application
file extension dsf - Direct Stream Digital Interchange File Format
file extension dff - Direct Stream Digital Interchange File Format
file extension shai - chemSHERPA-AI saved data
file extension replay - Rocket League game replay
file extension prt - CAD 3D part or component
file extension geojson - GeoJSON geographic format
