I want to drop a specific image in, and have a reader that debugs this. Sometimes images don't follow specs exactly, or stretch them in fun ways, and sometimes this leads to inconsistent behaviour across platforms. Sometimes passing an image through a platform strips or reformats this data.

The current context for me is I'm exploring various non-steganography approaches to embed metadata in photos. In the past, I've built custom formats to embed streaming data side-by-side: https://github.com/dustinfreeman/kriffer