1. A computer-implemented method for reconfiguring a web page using a computer to reduce load time of the web page required when viewing the web page through a browser, the method comprising the steps of: extracting dependencies between (i) pages, (ii) files, and (iii) components of the web page stored in a storage unit of the computer; measuring (i) a network delay value, (ii) a transfer efficiency value, and (iii) a component size; estimating load time of a candidate file using information of (i) the network delay value, (ii) the transfer efficiency value, (iii) the dependencies, and (iv) the component size; generating an integer programming problem, wherein the integer programming problem minimizes an object function representing the load time of the web page by analyzing the web page and generating a (i) dependency, (ii) an inclusion relationship and (iii) a loading relationship in the form of a 0-1 table; solving the integer programming problem using a solver; reconfiguring a library file from a solution obtained by the solver; reconfiguring the web page by replacing a link to the library file of each page with a link to the reorganized library file; and wherein, at least one step is carried out using a computer device.