Foloseste jetpack si activeaza modulul photon. Eu zic ca e mai bine asa.

Photon is an image acceleration and editing service for sites hosted on WordPress.com or on Jetpack-connected WordPress sites. Simply click the “Activate” button for Photon on the Jetpack page in your blog dashboard, and your images will be served dynamically from the global WordPress.com cloud. That means less load on your host and faster images for your readers.