I want to parse PNG format files, and I need to understand what they're doing with the bytes. Dropping a PNG into Notebook shows ASCII versions of the bytes. I need a small freeware viewer tool to examine the bits themselves. Can someone point me at something I could use? Also, while I am reading up on PNG format, I could use some direction on practical (or prefereably even visual idiot's guide) interpretation of the format (as opposed to theory). D.