What is the PBOX format? PBOX is the standard format for pCon.box projects. It is used to save your projects locally and reopen them in pCon.box. Use one of the file options under ‘Download’ to open your projects in other programs. Published: 16/10/2026 10:30 Can I save my projects? It's no longer possible to open projects or import PEC files into pCon.box. What can I do?