Let XnView load iPhone PNG images

[Ben321]

When an app is transfered to an iPhone after being created by the person who programmed it in the iOS SDK, any PNG images which were resources used by the the software are automatically further compressed using one of the tools in the SDK, called PNGcrush. However if you have an app you want to "reverse engineer", one of the first things you will want to do is to be able to access the graphics of the app (usually these special PNG files). I found I can rename the app file to have a .zip file extension from the normal .ipa file extension, and open it up as a normal zip file and extrat the PNGs. However these PNGs (due to being additionally compressed with PNGcrush, and an additional required header "CgBI") are incompatible with MOST viewing programs on Mac and Windows. I'd like to see XnView be one of the first programs on Windows to actually be able to handle this variant of the PNG format. Please consider adding this feature to XnView.

[xnview]

XnView can already read these PNG

[Ben321]

Ok, maybe I need to download the latest version, because my current version can't read these.

Yes it does now work.

However it seems that certain iphone/ipad PNG files still are incompatible. Here's a link to a zip file in which I've put several of the pictures I extracted from an app which still won't work with XnView.
http://www.mediafire.com/?sg22ykhrzgjxzq4