A relaying device may comprise a network interface configured to connect with a network; a processor coupled to the network interface; and a memory configured to store tagging rule information and instructions. The tagging rule information may concern a tagging rule relating to tag information for a service server capable of storing at least one tag information in association with stored contents data. The relaying may receive designated tag information designated by an image processing device. The relaying device may determine whether the received designated tag information conforms to the tagging rule. Only when it is determined that the received designated tag information does not conform to the tagging rule, the relaying may convert the received designated tag information into converted tag information. The converted tag information may conform to the tagging rule. The relaying may transmit, via the network interface, the converted tag information to the service server.