Another thought is that the user might be a student or researcher needing to cite the book, so a feature could include tools for citation generation or highlighting key sections. However, integrating citation tools into a PDF service might be tricky if the content isn't legally obtainable through the service.
ZIP files are also known as "archive" files. They use lossless compression to reduce the size of the files inside the ZIP.
A ZIP file works like a folder that groups files and compresses them, making it easier to store, send, and share their content.
Another thought is that the user might be a student or researcher needing to cite the book, so a feature could include tools for citation generation or highlighting key sections. However, integrating citation tools into a PDF service might be tricky if the content isn't legally obtainable through the service.