Why Some Converters Add a Grey Film to Your Images (and How to Stop It)
https://bizzmarkblog.com/why-filename-preservation-matters-more-than-you-think-for-practical-workflows/
5 Reasons Converters Smother Your Photos in a Grey Film - and why you should care If your perfectly crisp image comes out of a converter looking like someone wrapped it in tracing paper, you’re not imagining it