Interesting! Likely because the 3D model for the photo on the 2D site is a larger model than any of the models in the 3D scene.

But what’s extra interesting about that is the 3D page is a vanilla React project while the 2D site is built with Astro SSG, and has all 90+ lighthouse scores.

This website was able to optimize your 24MB glb file to 2.4MB and the quality looks the same to me https://glb.babylonpress.org/

Nice find I’ll test this out! Did you make this?

Khronos has a glb optimizer here btw: https://github.com/KhronosGroup/glTF-Compressor

This tool is good too: https://meshoptimizer.org/gltf/