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| Name | GL Transmission Format | Universal 3D File |
| File extension | .gltf, .glb | .u3d |
| Original software | ||
| Binary | ■ | ■ |
| ASCII | ■ | |
| Polygonal | ■ | ■ |
| NURBS | ||
| Solids | ||
| Smoothing groups | ■ | ■ |
| Textures, materials | ■ | ■ |
| Developer/Owner | Khronos Group | 3D Industry Forum, Ecma International |
| Description | ||
| Specification | Universal 3D File Format | |
| Format features | Supports 3D model geometry, appearance, scene graph hierarchy, and animation. A .gltf file may be self-contained or may reference external binary and texture resources, while a .glb file is entirely self-contained | Attempt to create a universal format for the exchange of 3D-data, including for publishing on the Internet. One of the successors of obsolete format WRL (VRML) |
| Viewing software | Paint 3D, MS Office etc | GLC_Player (free), MeshLab (free) |