GLB is a self-contained 3d model format, with geometry and textures inside. More info here https://github.com/KhronosGroup/3DC-Asset-Creation/blob/main/asset-creation-guidelines/RealtimeAssetCreationGuidelines.md I helped write parts of that, since I'm in weekly calls where we design the glTF format itself, via the Khronos…
Yeah, babylon.js has a great exporter. We use it here a lot. "snap-spec" might mean the models should match the specifications from Snap? https://docs.snap.com/lens-studio/references/guides/adding-content/3d/exporting-content/overview Best to ask them for clarification. Always better to ask than to assume, potentially…