A host device executes a browser application that displays web content to a user in plurality of tabs or windows. The browser application includes an interpreter that determines whether an external file referenced in the web content already exists in a shared memory resource available to a plurality of the tabs or windows. If the external file does not exist, the interpreter obtains the external file and generates the intermediate representation of the external file for storage in the shared memory resource. If the external file does exist, the interpreter links an intermediate representation of the code embedded in the web content that is stored in a dedicated memory resource to the corresponding intermediate representation of the external file stored in the shared memory resource.