1. A method of providing a modified object to a client in a system wherein an object is accessible to the client from a server, and wherein the object has an associated network locator or link thereto corresponding to an address, wherein in response to a request for the object the server provides the object to the client, comprising: asynchronous to, and prior to the request from the client, in dependence upon at least one predetermined condition, analyzing at least a portion of the object with an analyzer in a computing entity to identify at least a predetermined characteristic and, in response thereto, creating one or more transformation instructions that will change the predetermined characteristic when the object is modified, the transformation instructions being textual search and replace instructions; storing the transformation instructions in a repository; modifying the object provided by the server in response to the request to the object based on the transformation instructions that were stored in the repository prior to the request from the client; and, providing the modified object to the client; wherein the analyzer requests the object from the server prior to analyzing to obtain the object to analyze.