Rocket Loader is a web optimization feature from Cloudflare. It speeds up the load times of web pages by using a virtual browser to run JavaScript files after window.onload, and minimize network connections by bundling requests together.
Rocket loader does a bunch of things:
- It ensures that all the scripts on your page will not block the content of your page from loading;
- Loads all the scripts on your page, including third party scripts, asynchronously;
- Bundles all the script requests into a single request over which multiple responses can be streamed;
- Uses LocalStorage on most browsers and nearly all smart phones to more intelligently store scripts so they aren't refetched unless necessary.
