Hi what we recommend is:
1. Create an internal script on your server which connects to the GoogleFont Library through your API and loads the fonts (e.g. via cron once per week) and cache these results on your server to avoid the API calls limit.
2. Create a script which can be called from your themes which will return the Cached results and the theme will be able to handle and use the output.
3. In order to avoid overload of your server, make sure the theme connects to your server just from time to time and it caches the output. Use the Transients API for that http://codex.wordpress.org/Transients_API
I guess this is itCheers,
In my WP plugin I’m using script on my server which caches font list for 1 day and is called as JSONP.
I was needing this recently for the Styles plugin, and I noticed that phat-reaction.com/googlefonts.php was fairly out-of-date.
As a solution, I wrote a WordPress plugin that can run independently for testing, or as an include in any other plugins and themes. You can read more about it and see a screenshot on Github: github.com/stylesplugin/styles-font-dropdown.This drop-in class has several nice features:
- Automatic updates: Updates from Google’s Font API automatically, caching for 15 days. (Interval can be changed.)
- Search and style the menu: Uses the Chosen library, allowing users to search the font list and you to style as you’d like.
- Degrades gracefully: If you don’t set a Google Fonts API for yourself or your users, it falls back to a Google Font list stored in the plugin
- Deploy with or without an API key: If you set a Google Fonts API on your development machine, it will update the cache file for you to deploy to your users.