OBJ

OBJ is an open 3D geometry format introduced by Wavefront in the 1980s. It records vertices, normals, UV coordinates, and face connections in human-readable text, and is supported by almost all 3D software, making it a safe choice for cross-software mesh exchange. Its materials and textures are typically defined in an accompanying .mtl file, and both files must be placed in the same directory.

OBJ does not contain animation or skeletal data; it only represents static meshes, so it is not suitable as a final format for character animation workflows. Additionally, the 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 choice.