Abstract: A method for classifying electronic content is discussed. The method includes obtaining an electronic document from a computing system, identifying one or more document features of the electronic document, analyzing the identified document features to determine a format of electronic content contained in the electronic document (the determined format being implied by one or more indicators provided by the identified document features), and specifying whether the electronic content contained in the electronic document may be displayed on an identified type of computing device, based on the determined format.