File extensions are the short suffixes that appear after the filename. They are used to indicate the file type. In their early use, file extensions were used to indicate the generic type of a file. For example, .txt was used for a text file, and file extension .gfx for a graphics file. However, over time, file extensions have become connected with certain programs or even versions of that program. A .doc file indicates a Microsoft Word document, while a .docx file extension means it was created using Word 2007 or a later version. Use the index below to locate file extensions and click on the links to learn about their file types and the programs that support them.

File Extension Library

File extension is that portion at the end of a filename (suffix) that describes its file type. The file extension can be from one to several characters long and can be usually identified easily since the filename and its extension are separated by a “.” like for example “computer.jpg” which indicates that the jpg part is the file extension for that file. JPG is a well known format which is basically an image file. JPG images are commonly found on web pages because of their small size.

Different applications are required to open different types of files based on their file type. Information about file type associations and the applications which are allowed to open them is stored in windows registry. This website contains a comprehensive database of file extensions.

The information we provide regarding each file format is brief and to-the-point. We are constantly researching all media to bring you the best user experience possible on the internet in terms of usability and content. Each entry contains information about the file format, its creator, a description of the file, related applications which make use of that particular file extension, and its common path which is the location on disk where it is most likely to find this type of file on your computer.

 

Extension	File Description	Popularity
.zoo	GarageBand Project File	Average
.rpmsg	Blaze Audio Wave Information File	Average
.hat	CARA Sound Radiation Data File	Average
.jfif	iTunes CD Information File	Average
.vtt	Creative Music Format	Average
.ods	Sony Ericsson Protected Content File	Average
.tcz	Cubase Project	Average
.xpw	AdLib Tracker 2 File (Most common)	Average
.pkl	AdLib Tracker 2 File (Most common)	Average
.pib	Audible Audio Book File (Most common)	Average
.ptx	Audible Audio Book File (Most common)	Average
.apm	ATRAC Audio File	Average
.wsp	Advanced Audio Coding File	Average
.wmz	Audible Enhanced Audiobook File	Average
.xsp	ABC Music Notation (Most common)	Average
.xspf	ABC Music Notation (Most common)	Average
.ts	Audio Codec 3 File	Average
.dpp	ACID Project File (Most common)	Average
.dol	ACID Project File (Most common)	Average
.nkit	Ableton Device Group	Average
.vid	WinAHX Tracker Module	Average
.lthmb	Audio Interchange File Format (Most common)	Average
.imz	Audio Interchange File Format (Most common)	Average
.msv	Compressed Audio Interchange File	Average
.xzm	Audio Interchange File Format	Average
.vfs	A-Law Compressed Sound Format	Average
.gcda	A-Law Compressed Sound Format	Average
.meg	Cubasis Project File	Average
.spk	Advanced Module File	Average
.r00	Adaptive Multi-Rate Codec File	Average
.pjr	DVD-Audio Audio Object File	Average
.mpe	Monkey’s Audio Lossless Audio File (Most common)	Average
.mpx	Monkey’s Audio Lossless Audio File (Most common)	Average
.xv	Velvet Studio Sample (Most common)	Average
.stv	Sony ATRAC Audio File (Most common)	Average