Like the GIF (that's Graphics Interchange Format), the PDF (Portable Document Format) has survived and flourished through the digital age. That's partly because of its versatility: It's the go-to ...

Upgrade your suite of PDF tools.

Adobe’s entry Acrobat plan handles routine PDF work well, but advanced features still require a move up to Pro.

PDFs with accessible mathematics have reached a practical turning point. For the first time, complex equations embedded in PDF documents can be navigated, spoken, and rendered in braille by assistive ...