An online print system including a server and a print apparatus capable of communicating with the server via the Internet is provided. The print apparatus receives display page data from the server, analyzes the display page data and requests the server to print the display page data in accordance with link information included in the display page data. The server obtains the print page data using the link information, forms an index file including information indicating outlines of respective pages of the print page data, and transmits the index file to the print apparatus. The print apparatus receives the index file together with the print page data from the server apparatus and displays the index file. A page to be subjected to printing is designated on the basis of the displayed index file and the designated page is printed on the basis of the print page data.