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# System prepended metadata

title: 3D dingen discussie

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# 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