We'll create fresh WordPress site with Simple WP Retina installed. You have 20 minutes to test the plugin after that site we'll be deleted.
Seamlessly switches out images on Retina and other high pixel density screens with @2x versions.
The switch happens server side saving on HTTP requests.
No action is required on your part other than to activate it and to regenerate your thumbnails with the Regenerate Thumbnails plugin.
Plugin automatically: