GLB

GLB is the binary container for glTF 2.0 — the Khronos Group's web-native 3D format, often called "the JPEG of 3D." A single .glb file packs the model's JSON metadata (scene graph, materials, animations) and binary buffers (vertex positions, normals, UVs, indices, textures) into one self-contained download, ideal for streaming over HTTP. Universal support across the modern 3D stack: Three.js, Babylon.js, model-viewer (Google's `<model-viewer>` web component), Sketchfab, Facebook 3D posts, Microsoft 3D Viewer, Apple QuickLook (via USDZ conversion), Blender (import/export), Unreal Engine, Unity. Every WebXR/AR/VR pipeline reads GLB. Spec finalized in 2017 as glTF 2.0; binary chunk format kept stable since.