Method of outputting content through network, and apparatus and system for performing the method

A system for outputting content through a network includes: a first server configured to store content received in an account of a user; and a second server configured to obtain the content from the first server, convert the content into output data, and transmit the output data to an output device, according to an output request received from a mobile terminal of the user, wherein when the second server receives a request to check the content from the mobile terminal, the second server provides a preview of the content, instead of an original file of the content, to the mobile terminal. 提供了用于通过网络输出内容的系统。该系统包括：第服务器，被配置为存储在用户的账户中接收的内容；以及第二服务器，被配置为根据从用户的移动终端接收的输出请求，从第服务器获得内容，将该内容转换为输出数据，并将所述输出数据传送到输出设备，其中，当第二服务器从所述移动终端接收到检查内容的请求时，第二服务器向所述移动终端提供所述内容的预览，而不是所述内容的原始文件。