Mission Viejo-based activePDF has upgraded its PDF creation, conversion, and development tools. According to the company, its activePDF Toolkit 4.0 includes new digital signature capabilities, embedded Flash, dynamic form field creation, and double-byte character support for internationalization. activePDF provides it toolkit for developers who want to create PDF files from their software applications. The company's Windows-based COM object allows for creating PDF files, filling out form fields, and other PDF manipulation.