You can add keyboard shortcuts to a webapp. What you can't do is control or override the keyboard shortcuts that the browser adds, and you can't make use of the

You can add keyboard shortcuts to a webapp. What you can't do is control or override the keyboard shortcuts that the browser adds, and you can't make use of the full suite of possible keyboard shortcuts. I've looked at adding shortcuts to my webapps many times over the years, and it's never been worth the effort because the result is just confusing to the user.