Everyone knows Flutter Web as “Canvas, bundles, and compromises.” This talk asks a more interesting question: what changes when Flutter Web stops being only a JavaScript story and starts leaning on WebAssembly? Flutter supports building web apps with --wasm, falls back to JavaScript where needed, and can render faster with less jank when multithreading is available.

I’ll show what this means in practice: which apps benefit, where browser compatibility still gets messy, how JS interop changes for Wasm-compatible apps, and why package:web and dart:js_interop matter more than many Flutter teams realize. This is not a generic web talk; it is a practical guide to deciding whether Flutter Web is entering a new phase or just getting a new buzzword.