Meow Perfect Images Pro GPL Overview:

This plugin creates the image files required by the Retina (or any high-DPI) devices and displays them to your visitors accordingly. Your website will look beautiful and sharp on every device. The retina images will be generated for you automatically (you can also do it manually) and served to the visitors. You will be able to control everything from a nice dashboard.

Image Management – Allows you to easily replace, regenerate, and manage your images and image sizes.

Bulk Replace / Generate – This makes it easy to change multiple images at once, saving you time and effort.

Retina / HighDPI
Creates high-quality retina versions of your images to ensure they look great on all devices.

Customization
Fine-tune your image management with options like disabling the image threshold and setting custom sizes.

Optimization
CDN support, Easy IO (EWWW)