PureWriterBackup is a utility tool designed to extract and convert writing data from the PureWriter mobile application into the widely supported EPUB ebook format. Built on Python, it enables users to backup their notes by exporting the application's internal database file, either directly as .db in older versions or by unzipping the newer .pwb archive to retrieve the database. The software processes this local database file to generate a standalone EPUB ebook, preserving the user's written content for easier reading on e-readers or other devices. The current version operates via a command-line interface, requiring users to place the database file in the same directory as the executable and run the program to initiate the conversion. While currently focused on EPUB output, the project roadmap includes plans to develop a graphical user interface, add support for additional file formats, improve Markdown rendering capabilities, enable direct Kindle sending functionality, and potentially create a dedicated Andro