Density Converter
This calculator tells you how to scale graphics between four density groups—perfect for building out applications across different devices.
Provide Retina Pictures via CSS
IconComposer2x
Icon Composer 2x is a replacement for Apple's Icon Composer that supports Retina Resolution Icons.
Icon Composer 2x
Icon Composer 2x is a replacement for Apple's Icon Composer that supports Retina Resolution Icons. On GitHub: https://github.com/lemonmojo/IconComposer2x
High Resolution Guidelines for OS X: Optimizing for High Resolution
Create a Set of Icons That Includes High-Resolution Versions