Abstract: A method and system for rendering web content is provided. According to one embodiment, when a user of a hand-held device makes a request to a server for web content, the server determines whether the request includes a metric data key. If the key is included, the server uses the key to retrieve a set of corresponding visual metric data from a database. The sever renders the requested content according to the retrieved visual metric data. If the key is not included in the request, then the server transmits to the device a request for visual metric data. The device responsively transmits back to the server the requested metric data, and the server renders the requested web content according to the received metric data. Additionally, the server may generate a unique key corresponding to the received metric data, transmit the key to the device for inclusion in future web content requests, and store the key and metric data in a database for later access.