In one embodiment, a method includes receiving a request from a client device, the request including one or more device dimensions associated with the client device. The method further includes identifying a set of one or more content profiles, where each identified content profile is associated with one or more content-profile dimensions that are compatible with the received device dimensions. The method also includes determining whether a previously created content manifest corresponds to the identified set of content profiles. The method also includes, in response to a determination that a previously created content manifest corresponds to the identified set of content profiles, sending to the client device a uniform resource identifier (URI) identifying a resource that includes the previously created content manifest.