PDF Sealer (PDFSealer) - Version 6.05 Users can digitally sign the PDF withcertificates managed by Windows. Thedigital signature is compliant with standardPDF signature interchange standard, which can be verified by Acrobat reader or compatiblehandler directly. Users can apply signing multiple times in workflow for reviewing. Users canalso apply or modify the security of the PDF with proper settings. Uses can also click the“Email?toolbar button to launch the default email client with attaching the current PDF forsending.It is done in pure C++ from scratch up. Hence NO need of Acrobat or others. By optimizing the memory management, parsing, recursion control, and encryption speed, It provides several times faster than other similar tools.It supports Windows 9x, NT4, 2000/XP and later. The unregistered version will put a small trial watermark on the first 20pages of the encrypted PDF. Use -R option to enter registration key. After that, no trial watermark will be stamped on the PDF processed.