When a PDF is the wrong container for the next decade
Everyday PDFs are built to look right on today's screen. They may call external fonts, keep interactive scripts, or store colors that only make sense on one device. That is fine for a slide. It is a liability for an invoice, a signed contract, or a file a public body must keep.
This page is that recovery path: one PDF in, one PDF/A-2b out. It is not a document-management vault. Use Densem for Business when you have a folder of files to archive.
