Is there anyway I can optimize existing images hosted in AWS cloud?

Hi,

I’m yet to try this plugin. But I want to know the following feature will work or not?

Actually all of our images hosted in AWS S3 with sub-domain branded URLs like cdn. mywebsite .com/image.png.
Whenever I upload images in WP editor or Media library it will be automatically uploaded to AWS cloud and the default server. But image will be served publicly from S3 branded URLs only.

1) In this case, Will your plugin optimize existing S3 uploaded images and uploaded the same in S3 again and serve with S3 branded URLs?
2) Also the same functionality is possible for new uploads as well?