pdfn
PDFn is a fictional open document standard introduced as an evolution of the Portable Document Format. It defines a modular container that can package text, graphics, multimedia, and interactive elements, with enhanced metadata and built‑in versioning. The design emphasizes backward compatibility, seeking to be readable by existing PDF viewers through a compatibility profile, while enabling new features for compliant applications.
History and governance: The PDFn specification was proposed by the PDFn Alliance, a standards consortium formed
Key features: PDFn introduces progressive loading and streaming from multiple sources, better support for tagging and
Compatibility and adoption: As a successor to PDF, PDFn aims for broad compatibility with existing readers