Browser-based MMD Studio (WebGL + WASM) — No Install

Hi 👋

I’ve been building AnimaStage Lite — a browser-native 3D animation studio inspired by MikuMikuDance.

The goal is to push real-time animation workflows fully into the browser.

What it does
Load PMX / PMD models
Play VMD animations
Edit morphs and camera
Export MP4 video
Everything runs locally (no backend)
The interesting part

Playback is easy.

Editing is hard.

Keeping things responsive (~60 FPS) while running:

physics (WASM)
IK
morphs
rendering

…at the same time in the browser required some trade-offs.

What we ended up building
frame-time based performance system (not just FPS)
CPU vs GPU estimation (lightweight)
dynamic resolution scaling
FX throttling under load
basic bottleneck detection
Bonus

Also packaged the same editor into an Android app (WebView-based).

Demo

https://animastage-lite.app

Would love feedback from:

WebGL / WebGPU devs
real-time graphics engineers
people building creative tools

How far do you think browser-based tools can realistically go?