Nuance - PDF Solutions - Feature Comparison Matrix

Feature	PDF Converter 5	PDF Create! 5	PDF Converter Professional 5	PDF Converter Professional 5 Enterprise
Add passwords with 128-bit secure encryption and permission controls to PDF files
Add digital signatures to PDF files
Microsoft Crypto API/3rd party digital signature compatibility
PDF Optimizer removes comments and private data
Drag and drop security profiles to quickly and easily secure documents
Send multiple files in their original formats in an encrypted PDF envelope
Redaction of text from PDF files
Redaction of image zones from PDF files
Redaction text properties including color, redaction codes and custom overlay text