1. A method of transcoding a web page of a web site, the method comprising: receiving a request from a client device for the web page of the web site; retrieving a signature schema for the web site, said signature schema comprising one or more instructions to identify a web page family for the web page and to extract a subset of data from the web page using one or more signatures previously identified within at least one web page of a same web page family of the web site; obtaining the web page; and applying the one or more instructions to the web page for presentation of the web page by a browser of the client device; wherein at least some of the instructions include one or more directional references relative to the signatures to locate and extract some of the subset of data within the web page.
2. The method of claim 1 wherein the web page comprises code in a markup language; wherein the one or more signatures comprise text strings within the code; and wherein said one or more directional references indicate positions of some of the subset of data within the web page code relative to the text strings.