The ".obj" file format is a widely used 3D model file type that stores information about the geometry of 3D objects. It was developed by Wavefront Technologies and is commonly used in computer graphics, animation, and game development. The format supports various features, including vertices, texture coordinates, normals, and polygonal faces, making it versatile for different applications. One of the key advantages of the .obj format is its simplicity and human-readable structure, which allows for easy editing and manipulation. Many 3D modeling software programs, such as Blender and Maya, support importing and exporting .obj files, facilitating collaboration and sharing among artists and developers.