1. A machine-implemented method of clearing an application cache, the method comprising: receiving a request for a manifest file from a first electronic device, the manifest file indicating a current version of application resources for loading web content offline; determining that the request received by a second electronic device includes a first instruction for clearing an application cache on the first electronic device, the application cache comprising a stored version of application resources for loading web content offline; and providing, for transmission, in response to the determining that the request includes the first instruction, a second instruction to the first electronic device, the second instruction being provided by the second electronic device for instructing the first electronic device to clear the application cache.