A world wide information network called the Internet is structured and the information distribution service via the network is now operating in which it is now possible to obtain and make reference to every type of information resources through connection to the Internet. However, the type of distributed information and environment of user terminal connected to such information distribution service are all diversified and therefore it is sometime impossible to process the information requested from the user in the user terminal even if such requested information is transmitted to the user terminal. The present invention distributes information, in the information distribution service for transmitting the information to the terminal based on the request from a user through the network, by confirming the function of the terminal of user who has requested the information, determining whether the requested information can be processed with the function of the terminal and then converting, when processing is determined as impossible, the information to the format which may be processed.