Colt, I’d like to mention that converting to WebP can help a lot in saving space, and it also removes this extra data on the way.

I’ve created a tiny Java app (works on Windows, should also work on Linux&MacOS), that takes an Android project and converts (when needed) all resource images according to various configurations:

I hope Android-Studio will have a similar tool built in. This is why I requested about it here:

https://code.google.com/p/android/issues/detail?id=202923