A lightweight information user interface is provided for displaying information about a focused-on (e.g., mouse-over) text item, data item or other object in an electronic document that minimizes interruption of workflow with the electronic document. Upon focus on a word or other object in an electronic document a quick look-up function may be invoked for retrieving information from a local or remote information source about the focused-on item. Retrieved information, for example, translations, dictionary definitions and research information, is displayed in close proximity to the focused-on item in a lightweight information user interface. Information may be displayed according to a variety of media types including text, audio, video, pictures, bitmap images, etc.