20. A system comprising: a communication device for communicating with a client over a network; a server system comprising a memory and at least one processor; and a program stored in the memory and configured to be executed by the at least one processor to: scan a web page to identify external code referenced by the web page; extract the identified external code referenced by the web page from at least one import file associated with the web page; concatenate the extracted external code into a new import file; and send, via the communication device, the new import file and the web page to the client in response to a request from the client to access the web page.
21. The system of claim 20 , wherein the at least one import file includes code which is not referenced by the web page as well as external code referenced by the web page.