See: - http://limi.net/articles/resource-packages/ - http://www.stevesouders.com/blog/2009/11/18/fewer-requests-through-resource-packages/ The basic idea is to allow a new link element of the form: <link rel="resource-package" type="application/zip" href="pkg.zip" /> where the contents of the zip file would serve as the resources the HTML page actually references.