You could have downloaded CompactImage 1.6.6 for Mac from our application library for free. This free Mac application is an intellectual property of AtalantiaDevelopment. CompactImage for Mac is included in System Tools.
From the developer:
SparseImage and ImageBundle blow up during usage. With CompactImage you can shrink them to the size they actually need.
CompactImage lets you shrink SparseImage and ImageBundle files--which expand during usage--to the size they actually need to be.
You may want to check out more Mac applications, such as ProteinID Finder, Secret Missions - Mata Hari and the Kaiser's Submarines or Xilisoft DVD to iPad Converter 6, which might be similar to CompactImage.