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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
OV2 - Extension Details
Date Added: April 10, 2008
File Extension:  .OV2
Description 1: .OV2 is the extension linked to a locations database known as "points of interest. The points allow for overlaying on a TomTom navigation map. Users can manually create this file with the help of TomTom Navigator using a Pocket PC device or through conversion of a particular existing database to TomTom Navigator format using a computer or PC. It is possible to save .OV2 files with corresponding .BMP files that provide a graphic image of the various locations.
File Type:   Data file
Mode: ASCII
Program(s) to Open:  Windows: TomTom HOME Macintosh: SampoSoft PoiView, TomTom HOME Pocket PC: TomTom Navigator
Common:
Extension: