We built a fully client-side 3D Animation Studio on Next.js (Three.js + WASM Physics).

#webdev #ai #programming #javascript

Hey everyone,

My friend and I built AnimaStage because we wanted MMD staging to feel zero-friction — open a tab, drop PMX/PMD and VMD, preview with physics, export without fighting desktop setup or weak hardware.

Live demos (no download, no login):

Lite (9:16 / Shorts-ready): https://animastage-lite.app

Pro (RTX-style lighting, bone editor): https://animastagepro.dev

Under the hood: Ammo.js WASM for physics and deterministic MP4 export. We're aiming to open-source more of the stack this summer.

We're building this for creators who want a smoother day-to-day workflow — and for people on weaker devices where full desktop MMD is rough. This isn't just a promo pitch; the goal is to keep it open and easy to use.

Would love your feedback on what to prioritize next: What's still missing for browser MMD vs desktop? Shorts export vs timeline/VMD editing — what matters more?

Anyone here using web tools for dance covers or VTuber prep?

Happy to answer technical questions. Not trying to spam — genuinely curious what this sub would actually use.

Thanks!

Demo video https://youtu.be/TUKa7emqVow