6. The computer-implemented method of claim 5 , further comprising determining the information when the one or more fonts specified by the source document form the font family having the plurality of fonts.
6. The computer-implemented method of claim 5 , further comprising determining the information when the one or more fonts specified by the source document form the font family having the plurality of fonts. 7. The computer-implemented method of claim 6 , wherein determining the information includes modifying the source document to obtain a modified source document specifying the plurality of fonts for displaying text at the web page instead of the font family having the plurality of fonts.