Hosting an Unreal Engine Web Game inside a Single Page Application

Date: August 2025 | Tags: Unreal Engine, WASM, WebGL

The Challenge

Exporting a massive Unreal Engine project to HTML5 (WebGL/WASM) comes with enormous payload sizes that browsers struggle to cache and load cleanly. We needed to create a Single Page App surrounding the game canvas.

Building the Wrapper

Using native web APIs, I created a custom bridging system between the Unreal Engine C++ backend and our frontend JavaScript. This allowed us to trigger UI events in HTML natively from inside the game, providing a unified experience where menubar overlays communicate seamlessly with the Unreal process running in the Canvas element.

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