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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
OBJ - Extension Details
Date Added: September 09, 2008
File Extension:  .OBJ
Description 1: .OBJ is the extension tied to the HyperionCADRazor 3D Model. CADRazor is the general purpose graphics manipulation application utility that is built on the OpenGLAPI. With the CADRazor, users are able to visualize various complex 3D objects. In this way, the CADRazor tool delivers display control along with transparency and shading. CADRazor comes with a FlyBoy mode for traversing inside users models.
Description 2: .OBJ is the file extension associated with the threedimensional object that contains texture maps, 3D coordinates as well as other object data or info. This standard 3D image file format allows for exporting and can be opened using a variety of 3D image editing software programs. Many file software programs support the .OBJ standard file format.
File Type:   3D Image file
Mode: Binary
Program(s) to Open:  Windows: Autodesk Maya, Autodesk AutoCAD with OBJ Import plugin, NewTek Lightwave 3D, Smith Micro Poser Macintosh: Autodesk Maya, Cheetah3D, NewTek Lightwave 3D, IMSI TurboCAD, Smith Micro Poser Unix: Java3D
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