Whiteboard

Real-time collaborative drawing — React frontend + Rust/Axum backend, Supabase Postgres persistence.

Structure

frontend/   React 19 + TypeScript + Vite + Tailwind v4
server/     Rust + Axum WebSocket server + sqlx

Quick start

# 1. Backend
cd server
cp .env.example .env   # fill in DATABASE_URL
cargo run

# 2. Frontend (new terminal)
cd frontend
cp .env.example .env   # optional — dev proxy works without it
pnpm install
pnpm dev

Open http://localhost:5173.

Features

• Shapes: rectangle, ellipse, line, freehand, text
• Select + edit color / stroke width
• Zoom & infinite pan
• Undo / redo (synced to all clients)
• Rooms — share URL to collaborate
• Dark mode (persisted)
• Keyboard shortcuts (? to open help)