pdf4u: Web-Based PDF Management Toolkit App

pdf4u is a versatile web-based PDF management toolkit app designed to handle a wide range of PDF operations, including merging, splitting, rotating, and extracting pages from PDF files. Developed using Flask for the backend, the application provides a user-friendly interface built with HTML, CSS, and JavaScript. Users can easily upload and manipulate files using an intuitive drag-and-drop feature. The toolkit is designed for extensibility, with additional functionalities like converting images to PDFs and more in development.