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.
 

File extension of the day

Random daily pick from File-Extensions.org's database.

fla file icon.fla - Editable Adobe Flash project (animation, movie, flash application)

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

exe file extension icon file extension exe - Program executable

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

jpg file extension icon file extension jpg - JPEG bitmap image

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

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

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

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

default file extension icon file extension part - Partial download

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

dwg file extension icon file extension dwg - AutoCAD drawing

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

png file extension icon file extension png - Portable Network Graphic file

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

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 eot - Embedded OpenType font

otf file extension icon file extension otf - OpenType font file format

svg file extension icon file extension svg - XML based scalable vector graphics format

ttf file extension icon file extension ttf - TrueType font

woff file extension icon file extension woff - Web Open Font Format package

default file extension icon file extension woff2 - Web Open Font Format 2.0 package

php4 file extension icon file extension php4 - PHP (HyperText PreProcessor) script with PHP version 4 code

html file extension icon file extension html - HyperText Markup Language web page

htm file extension icon file extension htm - HTML Hypertext Markup Language web page

1 file extension icon file extension 1 - Mozilla Firefox cookie, image, popup permissions

default file extension icon file extension 3dmlw - 3DMLW file

509 file extension icon file extension 509 - Internet security certificate

default file extension icon file extension abe - Application Boundaries Enforcer rules data

default file extension icon file extension abm - Application Boundaries Enforcer data

default file extension icon file extension adp - AOLserver Dynamic Page

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.

Latest articles

Check out the recently published articles related to file extensions, tutorials or software tips.

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