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 OS X, and basically telling them, what kind of data and file type they are working with and what associated program opens this 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 reviews.

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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 database.

gzquar file icon.gzquar - BitDefender quarantined data

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 oxps - Windows OpenXPS document

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

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

numbers file extension icon file extension numbers - Apple Numbers spreadsheet

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

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

pages file extension icon file extension pages - Pages document

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

flac file extension icon file extension flac - Audio files encoded by Flac - free lossless audio codec

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

mkv file extension icon file extension mkv - Matroska multimedia container

pptx file extension icon file extension pptx - Microsoft PowerPoint Open XML presentation

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

default file extension icon file extension spb - Samsung Kies exported phone contacts library

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 bzw - BZFlag map

default file extension icon file extension 300 - NCBridge network boot software data

default file extension icon file extension fmf - Football Manager 2012 game graphics package

default file extension icon file extension trf - Train Simulator traffic pattern

wsb file extension icon file extension wsb - Microsoft Works portfolio

default file extension icon file extension sfc - Motic Images Plus image

doc file extension icon file extension doc - Document file

default file extension icon file extension 204 - Winfunktion Mathematik v8.0 Julia fractal data

php3 file extension icon file extension php3 - PHP version 3 script

hlp file extension icon file extension hlp - Help file

aso file extension icon file extension aso - Adobe Flash cache

default file extension icon file extension leotmi - Privacy Lock protected picture

default file extension icon file extension seam - Seam Framework JAVA servlet file

umod file extension icon file extension umod - Unreal Tournament MOD installation package

default file extension icon file extension imr - IBM Cognos Impromptu report

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

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