Systems and methods for efficient downloading and rendering of a web page on a network connected processing device are provided. A per-page manifest specifies a list of blocked resources specific to the web page is provided. When a page is requested by the network connected processing device, blocked resources defined in the manifest are not retrieved via the network and hence not rendered by the processing device. Manifests are defined on a per-page basis. In one embodiment, manifests are created or retrieved with each request.