Problem Statement:**  

Develop a secure, locally hosted, and feature-rich PDF manipulation tool that provides a comprehensive set of operations like splitting, merging, converting, and reorganizing PDFs, while ensuring data privacy and efficient processing without requiring any external data transmission.

Justification:

The justification highlights the need for a secure, locally hosted PDF manipulation tool to address privacy concerns associated with cloud-based services. By keeping all operations within the user's environment, sensitive documents remain secure. The tool's advanced features, like parallel processing and customizable options, enhance efficiency and cater to both personal and professional use, particularly in fields where data privacy is crucial.