There are many different formats for 3D models, each with its own advantages and disadvantages. OBJ is a simple and widely supported format that stores the geometry, texture coordinates, and materials of a 3D model, but it does not support animation, rigging, or lighting. FBX is a versatile and popular format that supports geometry, materials, textures, animation, rigging, lighting, and cameras; it can also store multiple objects and scenes in one file. STL is mainly used for 3D printing as it describes the surface of a 3D model as a series of triangles but does not support colors, textures, or other features. GLTF is designed for efficient and fast loading of 3D models on the web and mobile devices with support for geometry, materials, textures, animation, rigging, lighting and extensions for features such as physics and audio. USDZ is Apple's format for displaying 3D models in augmented reality (AR) on iOS devices; it supports geometry, materials, textures, animation, rigging, lighting and cameras as well as AR-specific features like occlusion and shadows.