In particular embodiments, a method for editing a web page includes identifying a plurality of components that collectively form a programmatic representation of a first web page. At least one of the components has content that dynamically changes in response to data retrieved externally from the content. A second web page is generated. The second web page includes a plurality of parameters. Each parameter of the second web page corresponds to a respective one of the identified plurality of components. One or more modifications made to the plurality of parameters are interpreted. A programmatic representation of a third web page is generated, the generation based at least in part on the interpretation.