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.

crdownload file icon.crdownload - Google Chrome incomplete download

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

jpg file extension icon file extension jpg - JPEG bitmap image

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

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

default file extension icon file extension part - Partial download

default file extension icon file extension oxps - Microsoft OpenXPS document

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

dll file extension icon file extension dll - Dynamic Link Library

dwg file extension icon file extension dwg - AutoCAD drawing

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

numbers file extension icon file extension numbers - Apple Numbers spreadsheet

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 draw - Acorn vector draw format

default file extension icon file extension ems - eMachineShop CAD design file

default file extension icon file extension mxl - Compressed MusicXML music notation file

au file extension icon file extension au - Unix audio sound file format

default file extension icon file extension gmp - Geomorph tile map

xlt file extension icon file extension xlt - Microsoft Excel 97 to 2003 workbook template

default file extension icon file extension ptx - NVIDIA CUDA parallel thread execution assembly language data

vdf file extension icon file extension vdf - Steam Client data

default file extension icon file extension ns5 - IBM Lotus Notes database

default file extension icon file extension gcscenario - Galactic Conquest Scenario Editor scenario

3gp file extension icon file extension 3gp - Multimedia files for wireless networks

default file extension icon file extension ced - JVC corrupted video recording

regtrans-ms file extension icon file extension regtrans-ms - Microsoft Windows registry changes temporary data

exe file extension icon file extension exe - Self-extracting compressed file archive

ico file extension icon file extension ico - Icon image

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

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