Add photos to your iPhone and iPad photo library from zip files.
Simply open the zip file from emails, Safari, or using iTunes file sharing. Photo Unzipper will unzip the zip file, and show you all the photos in the zip file.
You can then choose which ones to add to your Photo Albums.
Scrapbookers - transparent png format is supported, so you can use zipped elements and papers downloaded from the internet in Digital Scrapbook apps, such as Albums FX for the iPad.
This unzipping functionality is built into Albums FXs Content Manager.
Albums FX lets you create photo albums on your iPad.
http://itunes.apple.com/us/app/albums-fx-scrapbook-action!/id391253841?mt=8
Or check out the website for a video and the free version at:
http://www.albumsfx.com/