Version 12 introduces Optimize PDF, a magnifier window, a callout tool, and DocuSign® support for Pro users. SAN FRANCISCO, Ap/PRNewswire/ - Smile, the developer of productivity applications for Mac®, iPhone® and iPad®, launches PDFpen and PDFpenPro 12, a new major version of its all-purpose PDF editing tool for Mac. PDF Editors, PDFpen and PDFpenPro 12, now with PDF optimization, a Magnifier window, a Callout tool, and DocuSign® support for Pro users