This page describes what you need to do before building a WebGL app. To build a WebGL application, you must first install the Unity Hub and then add the WebGL Build Support module.
|Install the Unity Hub
|Provides instructions on how to install the Unity Hub.
|Add modules to the Unity Editor
|To install the WebGL Build Support module, learn how to add modules via the Hub.
|WebGL Player Settings
|Learn how to set up Player Settings for WebGL.