File extension is usually three or more characters at the end of the computer file name. File extensions are useful for computer operating systems, like Microsoft Windows or Apple MAC OS X, and basicaly tell them, what kind of data file it is and with which application associated it is.
We have collected a huge amount of informations and created searchable file extension list. At present the File-Extensions.org library contains thousands of file extensions and with each day the database is growing. A large number of file type entries have detailed descriptions, including their current use and a list of applications associated with it and which can handle the unknown file type, you were searching for.

If you encounter a file in your computer with an unknown file extension, then you are at the right place. You can check our database for informations about file extension you were looking for, including list of associated applications.
Simply use the search box at the top-left corner of each page to check our database for a specific file extension. You may also browse our database in alphabetical order using the navigation menu at the top.

Latest articles

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

File extension of the day

Random daily pick from file-extensions.org database.

ova file icon.ova - Open Virtual Machine Format file

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.

Program executable file icon file extension exe - Program executable file

Active Server Page Extended ASP.NET script file icon file extension aspx - Active Server Page Extended ASP.NET script file

BitTorrent information file icon file extension torrent - BitTorrent information file

iWork Pages document file icon file extension pages - iWork Pages document file

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

Partial download file icon file extension part - Partial download file

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

Android package file icon file extension apk - Android package file

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

Microsoft Publisher document file icon file extension pub - Microsoft Publisher document file

AutoCAD Drawing file icon file extension dwg - AutoCAD Drawing file

Split Multi-volume ZIP compressed file archive (part 2) icon file extension z01 - Split Multi-volume ZIP compressed file archive (part 2)

Windows sidebar gadget file icon file extension gadget - Windows sidebar gadget file

Microsoft Windows Mobile encrypted file icon file extension menc - Microsoft Windows Mobile encrypted file

Microsoft Excel 2007/2010 Open XML workbook file icon file extension xlsx - Microsoft Excel 2007/2010 Open XML workbook file

Recently updated file extensions

Existing and new file extensions are updated or added very often. The database is maintained and improved every day.

wbpz file icon file extension wbpz - ANSYS update package file

hhpack file icon file extension hhpack - HTC Home extension file

strm file icon file extension strm - Plex Media Server settings file

ibatemplate file icon file extension ibatemplate - iBooks Author template file

ibooks file icon file extension ibooks - iBooks e-book file

ltc file icon file extension ltc - LTC syntactically analyzed text file

iba file icon file extension iba - iBooks Author e-book file

md5 file icon file extension md5 - Checksum file

smm file icon file extension smm - Samsung Galaxy S memo exported file

mpo file icon file extension mpo - CIPA Multi-Picture format

wotreplay file icon file extension wotreplay - World of Tanks battle recording file

qmg file icon file extension qmg - Samsung theme picture image file - qmage file format

qmg file icon file extension qmg - QMG ASCII file format

nrg file icon file extension nrg - Nero-Burning ROM CD or DVD image file

apk file icon file extension apk - Android package file

part file icon file extension part - Partial download file

pages file icon file extension pages - iWork Pages document file

exe file icon file extension exe - Program executable file

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