To properly support retina displays, consider these approaches:
- Use the WP Retina 2x plugin to automatically generate and serve retina images
- Upload images at 2x the display size
- Implement srcset and sizes attributes
- Use responsive images with appropriate breakpoints
For manual implementation, ensure your theme supports responsive images and use the wp_get_attachment_image() function, which automatically adds srcset attributes. Consider using WebP format for retina images to reduce file size while maintaining quality.

