Interactive 3D web experiences built for real-world performance
Causal Labs builds premium, performant 3D web experiences — React Three Fiber, three.js, GSAP and WebGL — engineered to hold 60fps and degrade gracefully across devices, not just look good in a demo reel. This site's own scroll-driven visual system is a live example of the approach.
Causal Labs builds premium, performant 3D web experiences — React Three Fiber, three.js, GSAP and WebGL — engineered to hold 60fps and degrade gracefully across devices, not just look good in a demo reel. This site's own scroll-driven visual system is a live example of the approach.
Why most 3D web projects feel great on a demo machine and terrible in the field
The gap between a 3D web portfolio piece and a production site is almost always device coverage: what runs smoothly on a developer's desktop GPU frequently drops frames or fails to load entirely on a mid-range phone. A 3D web build needs a genuine reduced-motion and low-power fallback tier from day one, not as an afterthought.
A lot of what gets searched for as a 'scroll animation website' doesn't need full WebGL at all — GSAP-choreographed scroll storytelling, pinned sections and scroll-scrubbed video can carry a brand narrative on their own. The judgment call is knowing which parts of an interactive website design actually need a 3D engine underneath them, and which are better served by lighter, faster DOM-and-CSS motion that never risks a dropped frame.
A 3D product website — a configurator, an interactive showcase a customer manipulates rather than just watches — is a different build again: it needs real interaction handling and a defined asset-loading strategy, not just a scene that plays once on scroll.
This often runs alongside the SaaS platforms we build behind these experiences.
How we approach an interactive 3D engagement
Requirements gathering
We identify the core interaction — ambient scroll narrative, a product configurator, or a background atmosphere — before deciding how much of the build actually needs WebGL.
Scoping & proposal
We define the fallback tiers and the device/browser support matrix upfront, with a fixed lead time.
Design
We define the fallback tiers upfront — full WebGL, reduced-motion, and no-WebGL — as part of the design, not a later patch.
Build
React Three Fiber / three.js scene construction with performance budgets enforced from the first commit.
QA & review
Tested across real low-end and mid-range devices, not just the development machine.
Handover & support
You get documentation for updating content and assets without needing to touch the 3D scene code directly.
What's included
Performance-budgeted 3D scenes
Built against a frame-rate and load-time budget from the start, not optimized as an afterthought.
Graceful degradation
Reduced-motion and no-WebGL fallback tiers that keep the page usable and on-brand on any device.
Scroll-driven motion
GSAP-choreographed interaction that resolves with the content rather than competing with it.
Cross-device testing
Verified on real mid-range and low-power devices, not just a development workstation.
Immersive product showcases
Interactive 3D configurators and showcases built for real user manipulation, not just a scene that autoplays.
Interactive design system
The interaction language — hover states, transitions, scroll pacing — designed as a coherent system, not bolted onto a template.
- Production 3D scene(s)
- Reduced-motion and no-WebGL fallback tiers
- Performance budget documentation
- Cross-device test results
- Asset loading & optimization strategy
- Content update documentation for non-engineers
The primary framework for declarative, component-based 3D scenes in React.
The underlying WebGL engine R3F is built on.
Drives scroll-linked and choreographed motion around the 3D scene.
The rendering technology powering the 3D layer, with defined fallbacks where it isn't supported.
Built immersive React Three Fiber experiences and a video-composition framework with scroll-driven 3D and postprocessing.
typical delivery window
performance budget enforced from the first commit, with defined fallback tiers beneath it
Questions about this service
Will a 3D site actually work well on mobile?
Only if the fallback tiers are designed in from the start — which is how we build it. A full WebGL experience on desktop, a lighter or static experience on mobile/low-power devices, by design rather than by degradation.
What's the difference between 'interactive website design' and a full 3D website?
Interactive design covers the whole interaction language of a site — motion, scroll pacing, hover states — some of which needs a 3D engine and much of which doesn't. We scope which parts of an interactive build genuinely need WebGL rather than defaulting to 3D everywhere.
Can you build scroll-driven animation without full 3D or WebGL?
Yes — GSAP-choreographed scroll storytelling, pinned sections and scroll-scrubbed video can carry a strong narrative on their own, with a lighter performance footprint than a full WebGL scene.
Can you build a 3D product configurator, not just a marketing scene?
Yes — that's a different brief from an ambient background scene: real interaction handling, a defined asset-loading strategy, and performance budgets that hold up under user manipulation, not just autoplay.
By industry
Want a 3D web presence that still performs once real users open it?
Tell us about the brand and the devices your actual visitors use.
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