Large database of computer file extensions

Click at first letter link/shortcut on the top navigation menu and browse for files with extension by the letter it starts with.

What is file extension?

In Windows and some other operating systems, file extension is one or several letters at the end of a filename. Usually three or four letters. Filename extensions usually follow a period (dot) and indicate the type of information stored in the file. For example, in the filename program.exe, the extension is EXE, which indicates that the file is an executable program file.
(Depending on the operating system, the punctuation separating the extension from the rest of the file may or may not be considered part of the extension itself.)
File extensions are also used in Microsoft Windows to associate the right applications to open or edit these files. For example, when you double-click at file with extension .txt, Windows starts associated program Notepad (by default). File associations are configurable. Users can change which software applications instaled at computer will open file format of any type.

Display file extensions at your Windows operating system

By default, Windows is configured to hide filename extensions, the (usually three-leter) portion of the filename following the period. Aside from creating a knowledge gap between experienced and inexperienced users, this "feature" also can make it difficult to differentiate files with the same filename prefix. Overall, hiding filename extensions makes Windows more difficult to use.

- Open My Computer, and select Folder Options from the Tools menu (or choose Options from the View menu in Windows 95).
- Click on the View tab, turn off Hide file extensions for known file types, and press OK.

List of last updated or new file extensions:

file extension srt - Movie subtitle file format
file extension rar - RAR compressed files from a multi-volume archive
file extension 7zip - Compressed archive file
file extension 7z - 7zip compressed file format
file extension cbr - CDisplay RAR Archived Comic Book File
file extension metadata_never_index - MAC OS X metadata settings file
file extension pub - Microsoft Publisher Document
file extension uif - MagicISO Universal Image Format File
file extension bin - Binary file
file extension pdf - Adobe Acrobat document file
file extension torrent - BitTorrent information file
file extension dwg - AutoCAD Drawing
file extension flv - Flash video file
file extension flac - audio files encoded by Flac - free lossless audio codec
file extension wps - Microsoft Works documents
file extension inp - GAMESS chemical modeller input file
file extension flk - MYOB lock file
file extension alc - Norton Internet Security ad server file
file extension ycbcra - Raw Y Cb Cr and alpha sample file
file extension ycbcr - Raw Y Cb and Cr sample file
file extension twd - MindMapper brainstorm and visual map file
file extension x - X11 server import image
file extension png32 - Portable Network Graphics
file extension png24 - Portable Network Graphics

file extension png8 - Portable Network Graphics
file extension picon - Personal icon file
file extension pfb - DESQview file
file extension pam - Common 2-dimensional bitmap format
file extension mono - Monolith munged encoded file
file extension palm - Palm Pixmap file
file extension cache - Magick cache file
file extension mpc - Magick Persistent Cache image file format
file extension mono - Bi-level bitmap file
file extension inline - Base64-encoded inline image
file extension info - Format and characteristics of the image
file extension hald - Identity Hald CLUT image file
file extension fig - xfig FIG image file
file extension fig - TeX format file
file extension fig - Super Nintendo game-console ROM image
file extension fig - MATLAB plot figure file
file extension fig - Geometry II Plus figure file
file extension fig - DeskMate drawing file
file extension fig - Cabri figure file
file extension fig - ATOS file
file extension dot - Graph Visualization file
file extension cr2 - Curious Labs Poser character file
file extension cmyka - Raw cyan, magenta, yellow, black, and alpha samples image
file extension art - 1st Publisher image file
file extension dst - ViPNet products encryption key set
file extension dst - Tajima Embroidery Machine stitch file

New: File extensions forum - here you can sign-in and read or post your questions, answers and share your knowledge about file extensions and file formats, software applications etc.

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Find file extension details here including easy-to-understand descriptions and associated applications. Search by extension, view common file types or click to file extension categories including archive files, audio and music files, backup files, document files, graphic files, video and multimedia files, internet related files and other file type categories.

Database contains 18409 records.
Last update: 31st. May 2009