Probably. The tool fetches Three.js from `cdnjs.cloudflare.com` at first load — that domain needs to be reachable. After that everything is local in the browser. Streaming over USB-Serial bypasses the network entirely. Streaming over Wi-Fi goes directly to your local ESP32, doesn't touch the internet.
If cdnjs is blocked you'll get a blank page; ask your IT to whitelist it. A future self-hosted Three.js version is on the roadmap.
If cdnjs is blocked you'll get a blank page; ask your IT to whitelist it. A future self-hosted Three.js version is on the roadmap.