OBJ

OBJ is an open 3D geometry format introduced by Wavefront in the 1980s. It records vertices, normals, UVs, and face connectivity in human-readable text, and is supported by nearly all 3D software, making it a safe choice for exchanging meshes across applications. Its materials and textures are typically defined in a companion .mtl file, and both files must be placed in the same directory.

OBJ does not contain animation or skeleton data; it represents only static meshes, so it is not suitable as a final format for character animation workflows. Additionally, text encoding makes large model files bulky, and complex scenes load slowly. If you need a single-file delivery with embedded textures, GLB is a better option.