# 3D dingen discussie ## Intern formaat - .gltf of .usd/usdz - Use gltf because it is most efficient for loading and transfering https://www.threekit.com/blog/gltf-everything-you-need-to-know ## Uploaden - Just support GLTF archive or GLB for now - For GLTF archive uploads: content must be validated in-browser based on the included gltf file (check if all uri's are present in the archive) - Also validated in model ingestion service for security reasons