The WWF foundation has launched a WWF file format, with this being an unprintable PDF.
WWF is the acronym for the World Wildlife Fund and their presence in these pages isn’t a mistake, as they are now making an impression in the software field. This international non-for profit organisation which cares for the protection of nature and the environment hasn’t turned their back on their mission, rather using it to embrace technology. Their German organisation has announced the publication of a program that converts documents into the WWF format whose particularity is that it is a non-printable PDF.
Technically, this WWF format has been announced as very similar to PDF, but the printing option for WWF documents has been completely blocked.