The Add Pages feature in Zoop Wallet is a useful and easy-to-use tool that allows you to add pages to a PDF. You can use it for PDFs stored in Zoop Wallet or even those not yet stored. If the PDF is not in Zoop Wallet, you can add pages and then store it in Zoop Wallet before finalizing the changes. This feature enhances document management and makes updating or modifying PDFs seamless.