The 3D model files available for download on this website come in three formats: .glb, .obj, and .usdz. Each format has the following characteristics:
| File Extension | Description | Recommended in cases like this. |
|---|---|---|
| .glb | In the binary format of GL Transmission Format (glTF), the shape and color information of a 3D model are combined into a single file. As it is represented in binary format (information expressed as 0s and 1s), it is lightweight and efficient. | Office products and online display. |
| .obj | The text file that describes the shape of a 3D model in the Wavefront OBJ format. Color information is often stored in a separate file with the extension .mtl. On this website, we bundle these two files, .obj and .mtl, together into a zip file. | Display on Office products, Android devices, and 3D printing fabrication. |
| .usdz | The archive format of Universal Scene Description (USD). The .usdz format is recommended by Apple and is optimized for displaying 3D content on iOS and macOS, encompassing information about shape, color, and animation. | Display on Apple products. |