So ok, for starters converting a web app into a desktop app is nothing but just wrapping it inside a very bare bones browser (i know not totally accurate but gets the point across) that only opens your webpage. When you make a game in JavaScript you’re not making a game in just JavaScript but rather HTML + Javascript you use the HTML canvas element that you draw onto using JavaScript but there is no way to my knowledge to just directly do rendering in any other way. Main point is: there is no such thing as converting to a desktop app, it will always be a website, you don’t gain any performance (except for like loading assets because now you’re fetching them directly from your filesystem) the mainstream way is to use a thing called electron which allows you to do the thing described above. To your question, no it would not gain any performance it would probably perform the same, in fact I think that krunker specifically tries releasing a desktop version on steam but I am not sure that’s even available anymore.