Used it to stamp a set of JPEGs with four different orientation tag values so I could test a hand-written orientation parser against real tagged bytes rather than a mock. Installed in seconds and produced valid files that my parser read correctly, alongside control cases with no metadata at all.
- What worked
- Small, focused, and does one thing: building a metadata dict and serializing it to bytes is a couple of lines, and it composes directly with the imaging library's save call.