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.

trec file icon.trec - Camtasia Studio recorded session

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.

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

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

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

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

docx file extension icon file extension docx - Microsoft Word Open XML document

xlsx file extension icon file extension xlsx - Microsoft Excel Open XML workbook and spreadsheet

jpg file extension icon file extension jpg - JPEG bitmap image format

default file extension icon file extension epub - Open Publication structure e-book

default file extension icon file extension oxps - Microsoft OpenXPS document

default file extension icon file extension part - Partial download

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

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

dll file extension icon file extension dll - Dynamic Link Library

dwg file extension icon file extension dwg - AutoCAD drawing

default file extension icon file extension thumbdata3--1967290299 - Android Thumbnail index

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 part - Partial download

default file extension icon file extension 2019 - Any data file created in 2019

default file extension icon file extension 2018 - Any data file created in 2018

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

default file extension icon file extension replay - Rocket League game replay

default file extension icon file extension jsonlz4 - Mozilla Firefox compressed bookmark backup

default file extension icon file extension replay - Fortnite game replay

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

default file extension icon file extension heic - High Efficiency Image Format

default file extension icon file extension cetrainer - DBVM data

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

default file extension icon file extension ehi - Evozi HTTP Injector configuration

default file extension icon file extension tpk - Tizen application package

default file extension icon file extension stl - Stereolithography CAD data

sldasm file extension icon file extension sldasm - SolidWorks assembly data

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

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