add_image_size and iPad Retina Display (high pixel density)

I developed a plugin that does that. It creates the new images for you (with @2x), tells you if the original image is not big enough (and give you a ‘Reupload’ button), then serves it to the clients using two methods (a image handler or a script). Please try it and tell me if I can make it better for you. It is available on WordPress Repository: http://wordpress.org/extend/plugins/wp-retina-2x.

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