GLTF

glTF is an open standard 3D format by Khronos, often called the JPEG of 3D: it uses JSON for scene structure, geometry in separate .bin files, and external textures, enabling incremental loading and streaming. glTF 2.0 is the mainstream format for exchanging 3D content across Web, mobile, and game engines.

Compared to GLB, glTF has multiple files, suiting CDN on-demand loading and resource reuse, but risks missing references from fragmentation. For single-file scenes or easy sharing, GLB is safer; for fine-grained loading control or partial updates, glTF offers more flexibility.