More info See in Glossary can be a constraining factor restricting the complexity of the content you can run, so we would like to provide some explanation on how memory is used in WebGL. The Unity WebGL build option allows Unity to publish content as JavaScript programs which use HTML5 technologies and the WebGL rendering API to run Unity content in a web browser.
Memory in Unity WebGL A JavaScript API that renders 2D and 3D graphics in a web browser.