Abstract: Web content provided in any mark-up language includes multiple web content pieces, each of which can be unformatted or formatted according to a formatting directive. The present invention teaches to apply to each formatted web content piece that consists of a specific formatting directive and formatting content one or more device-dependent size calculation factors. These factors assist in the prediction of how much space the formatted web content will consume on a particular device's screen. According to another embodiment, the consumed space prediction for web content can be employed to distribute the web content to the device.