Open the live concept demo: Kramank Classes. The brand and every record are made up; the engineering is real.
Measured on mobile
- Lighthouse performance
- 91
- Largest Contentful Paint
- 3.5 s
- Cumulative Layout Shift
- 0.001
- Total Blocking Time
- 7 ms
- Initial transfer
- 0.43 MB
- Full scroll transfer
- 0.9 MB
- 3D and media payload
- 0.34 MB of 3D, loaded after the first interaction
From the demo's own site-check file, run 23 to 24 October 2026.
Load on interaction
The 3D budget of 0.34 MB is fetched only after the first interaction, so first paint never waits for it.
Computed textures
Paper grain and desk textures are computed and baked to PNG rather than shipped as large photos.