Maybe you could get clever with a service worker injected by an add-in. The worker context doesn’t have DOM access but maybe you could stream the DOM in chunks

Maybe you could get clever with a service worker injected by an add-in. The worker context doesn’t have DOM access but maybe you could stream the DOM in chunks through postMessage and do some assembly in the worker. Though honestly that is a lot of hackery just to have it happen in the browser, but it does sound like an interesting experiment! Maybe I’ll try it out myself later..