VANCOUVER, British Columbia--(BUSINESS WIRE)--PDFTron Systems, a leading provider of document processing tools for software developers, announced today that it has secured a $71 million investment led by Silversmith Capital Partners, a Boston-based growth equity firm. PDFTron’s market-leading software development kit (SDK) is used by hundreds of enterprise customers around the world to enable digital transformation initiatives by providing a comprehensive document processing, conversion, and co.