[liberationtech] Metadata Cleanup trough File Format Convertion?

[Nick]

Quoth Fabio Pietrosanti (naif):
> If a JPEG is converted to PNG, "maybe" all metadatas are lost. (this
> has to be verified)
> If a DOC/DOCX is converted to a PDF, maybe all metadatas are lost.

Interesting topic. I'd be most worried about watermarks, as 
depending on the format they may well remain, and be difficult to 
find or test for. I don't know if they're routinely used, but it's 
certainly something to be aware of.