For those who want to scan multiple pages or forms into PDFs, use the Scanner App - PDF Scanner. It is a fast and user-friendly application that will help you save all of your scanned files into PDF format on your Android device. This application has a clean and modern interface and allows you to easily navigate through all of your scanned documents. You can quickly search for the desired document by typing its name into the search box. Once found, you can simply click on it to have it saved to your device.

If you need to scan the contents of a book, use the Scanner App - PDF Scanner.