Category talk:Watermarks
Subcategories for watermarks not in paper[edit]
The category text specifies 'images of watermarks in paper' (and so do the linked Wikipedia articles in some languages), but the subcategories Category:Images with digital timestamps, Category:Images with watermarks, and Category:Videos with watermarks contain mostly, if not all, original files that are themselves watermarked.
I would suggest that those categories be moved to a new category Category:Digital watermarks under Category:Digital watermarking, but the Wikipedia articles linked to Category:Digital watermarking in some languages define digital watermarks as being deliberately made as imperceptible as possible, which is not the case for the watermarks on the files in those three categories. Perhaps a new category under Category:Watermarking should be created instead?