Systems and methods for manipulating dynamically rendered content are described herein. A plurality of rules are defined and stored, wherein each rule includes a condition and an action, and wherein each action includes an instruction to render content within a webpage. A rule object is generated based on the plurality of rules, wherein the rule object includes executable code. The rule object is stored within an in-memory device disposed between a rules server and a transformation server. A request is received from a browser engine contained within the webpage. The rule object is executed to generate data based on the request; and the data generated by the rule object is transmitted to the browser engine contained within the webpage.