Definition
GLB & USDZ
GLB and USDZ are the two dominant file formats used for delivering 3D models and Augmented Reality experiences on the web and mobile devices.
GLB (Graphics Language Transmission Format Binary) is the web standard, often referred to as the "JPEG of 3D." It is highly compressed and universally supported by Google ARCore and most web browsers to deliver WebAR experiences. USDZ (Universal Scene Description Zip) is Apple's proprietary format required for native ARKit experiences on iOS devices. A robust 3D asset pipeline must support both formats simultaneously.