RENDERING HYPERTEXT MARKUP LANGUAGE CONTENT

Methods, systems, and apparatus, including medium-encoded computer program products, for rendering hypertext markup language content. In one aspect, a method includes receiving a document specifying a hierarchy of HTML elements, each HTML element having a representation in a first visual representation of the document; translating the HTML elements into a hierarchy of vector object primitives, at least one of the HTML elements being translated into a corresponding vector object primitive; and generating the first visual representation of the document by rendering the hierarchy of vector object primitives.