Improve the real or perceived speed of the site, or monitor performance metrics.
This module allows to register your Service Worker script.
This module provides extra Purge queue plugins, and solves the Duplica
Summary:
Embeds a critical CSS file into a page's HTML head, and loads the rest of non-critical CSS asynchronously.
This module uses the Varnish module to provide to the user the possibility of banning a list of URLs from