Abstract: It is possible to provide a method and device for enabling a WEB server having no WEB edition system inside to edit and update WEB contents directly from a WEB browser by converting and accessing a disclosed WEB contents public URL. For this, a relay server is installed for mediating between a WEB server having file transfer means, such as FTP, and a WEB browser for browsing the WEB contents. By converting the disclosed URL of the contents from the WEB browser based on a predetermined procedure, the connection destination is switched from the WEB server to the relay server. The relay server specifies the WEB server and the positions of the contents data according to the URL accessed by the WEB browser and relays the contents date acquisition and storage for the WEB server in accordance with a request from the WEB browser. Moreover, the relay server provides the WEB browser with an application for editing the contents. Thus, it is possible to acquire, edit and update the contents.