A method, system, and computer program product for human interface design. Embodiments proceed upon receiving a markup language description of user interface pages (e.g., HTML pages), then, without modifying the user interface page, parsing the markup language description to identify user interface objects configured to perform an operation responsive to a keyboard or mouse or pointing device. One or more mapping techniques serve to relate the parsed-out operation(s) to one or more voice commands. In some embodiments, the parser recognizes interface objects in forms such as a button, a textbox, a checkbox, or an option menu, and the voice commands correspond to an aspect that is displayed when rendering the interface object (e.g., a button label, a menu option, etc.). After receiving a user utterance, the utterance is converted into a text representation which in turn is mapped to voice commands that were parsed from the user interface page.