1. A method of comparing Scalable Vector Graphics (SVG) documents, comprising: creating a minimal logical representation of a first SVG document; performing tree isomorphism on the minimal logical representation of the first SVG document's document object model (DOM) to create a first logically minimized SVG DOM tree; using a similarity metric to compare the first logically minimized SVG DOM tree with a second logically minimized SVG DOM tree for a second SVG document; and creating a representation of computed similarity information from the comparison of the first logically minimized SVG DOM tree and the second logically minimized SVG DOM tree.