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.

msf file icon.msf - Mozilla Thunderbird mail summary

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

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

pages file extension icon file extension pages - Pages document

default file extension icon file extension oxps - Microsoft OpenXPS document

numbers file extension icon file extension numbers - Apple Numbers spreadsheet

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

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

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

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

srt file extension icon file extension srt - SubRip video subtitle format

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

default file extension icon file extension part - Partial download

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

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

xlsx file extension icon file extension xlsx - Microsoft Excel Open XML workbook and 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 fon - COREX manually verified broad phonetic transcription data

default file extension icon file extension owl - OWL (Obfuscated Weird Language) source code

default file extension icon file extension animations - Stardock SkinStudio data

default file extension icon file extension fgdb - Fontographer for Mac data

svg file extension icon file extension svg - Microsoft Word glossary backup

default file extension icon file extension iso - CALS ISO 8613 bitmap graphics

default file extension icon file extension rfb - RoboForm bookmarks

default file extension icon file extension fbu - FEBE Firefox add-in ZIP backup

default file extension icon file extension zbi - Zebra ZBI-Developer project

default file extension icon file extension bjk - Blaise data

default file extension icon file extension k6 - DataFlex index

default file extension icon file extension wixobj - WiX object

default file extension icon file extension sec - Construction specification data

default file extension icon file extension webdoc - Box service document

default file extension icon file extension fim - Fractal Imaginator data or parameter

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

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