I am curious if one is able to convert the quest file to something that could either be played without the actual Quest 5 program or in one's browser. It should be noted that I am a total newbie when it comes to coding, programming, and all of that, so excuse my obvious and blatant ignorance.

I saw that one could take the XML code and do something with that. Could that perhaps be converted into a format suitable for what I am asking?

It's possible for Alex to convert a Quest game into an app, which is html and javascript code (if I remember right). Just write an email to Alex and ask him about your wishes (alex@textadventures.co.uk).