Some of our themes have built-in support for retina images(read theme description for more information).
But if your theme unfortunately does not support retina images – don't worry. You can add this feature with WP Retina 2x plugin.
Here is installation steps:
- Install plugin from WordPress repository
- Set your options for plugin (for instance, you probably don't need retina images for every sizes set-up in your WP).
- Generate the retina images (required only the first time, then images are generated automatically).