Use Google Libraries to speed up your WordPress site
After searching for at least an hour, this fell into my lap.
With the wide variety of Javascript libraries that are used across the web today, whenever I’m putting together a site, I always wind up using functionality from more than one, usually because Plugin X uses jQuery and Plugin Y uses Prototype.js or Scriptaculous. The problem here is that these file sizes quickly add up. For example, the version of Prototype that ships with WordPress weighs in at 121kb alone.
The solution? Load these libraries from Google. This helps in a few ways. One, it takes a bit of load off your server, which is nice. Secondly, the plugin will automagically use compressed and minified versions of the libraries where available. That cuts down on load time. But the kicker? Many users will already have these versions cached. That means no download time at all!
Download the “Use Google Libraries” plugin from WordPress.org and feel your site speed up and your server sigh in relief.