File extensions sample

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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I want to convert from      to    

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.

kdz file icon.kdz - LG firmware archive

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.

pdf file extension icon file extension pdf - Adobe Portable document format

default file extension icon file extension crypt12 - WhatsApp Messenger message database

apk file extension icon file extension apk - Google Android application package

default file extension icon file extension epub - Open Publication structure eBook

default file extension icon file extension aae - Apple Photos sidecar file

skp file extension icon file extension skp - SketchUp graphics

default file extension icon file extension oxps - Microsoft OpenXPS document

dll file extension icon file extension dll - Dynamic Link Library

numbers file extension icon file extension numbers - Apple Numbers spreadsheet

264 file extension icon file extension 264 - H.264/MPEG-4 AVC video data

crdownload file extension icon file extension crdownload - Google Chrome incomplete download

default file extension icon file extension nomedia - Google Android OS system file

default file extension icon file extension dav - DVR365 encrypted video recording

pages file extension icon file extension pages - Pages document

rar file extension icon file extension rar - WinRAR RAR compressed archive

Recently updated file extensions

The file extension database is maintained and improved on daily basis. Here you can check last updated entries.

default file extension icon file extension json - JavaScript object notation data interchange format

default file extension icon file extension eddx - Edraw project

default file extension icon file extension tpk - Tizen application package

aspx file extension icon file extension aspx - Active Server Page Extended ASP.NET script

default file extension icon file extension spd - S Note note (new version)

bin file extension icon file extension bin - CD/DVD binary image

default file extension icon file extension spba - Samsung Kies phone contacts library

default file extension icon file extension ris - Research Information Systems citation

emz file extension icon file extension emz - Microsoft Windows compressed enhanced metafile

mp4 file extension icon file extension mp4 - MPEG-4 video file format

pmd file extension icon file extension pmd - Adobe PageMaker document

default file extension icon file extension pkpass - Apple Wallet pass data

cdr file extension icon file extension cdr - CorelDRAW vector or bitmap graphics

default file extension icon file extension rofl - League of Legends game replay

mp3 file extension icon file extension mp3 - Compressed audio and music file, mp3 songs or ringtones

Enter any file extension without dot (e.g. pdf)
Search for file extension details and associated application(s)

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