1. A client apparatus communicable with a server apparatus via a network, the client apparatus comprising: a processor; and a memory storing instructions that, when executed by the processor, cause the client apparatus to: register shortcut buttons for displaying web pages, each button corresponding to at least a URL and a display language; display an operation screen including the registered shortcut buttons; detect a user operation for selecting one of the shortcut buttons in the displayed operation screen; and transmit to the server apparatus, in response to the detection of the user operation, a request for a web page based on a URL corresponding to the selected shortcut button, the request including a code of a display language corresponding to the selected shortcut button, to thereby receive the web page associated with the display language.