The Cloudimage Wordpress plugin will automatically adapt the image URLs in your Wordpress site to deliver your images rocket fast over Cloudimage. You only need to register with Cloudimage and install the plugin in your Wordpress site.
If you need to adjust the behaviour of the plugin, please see the Advanced settings.
You can create an account on the Cloudimage registration page.
You need to enter your Cloudimage account token which you have received upon account creation (step 1).