If a download button is not visible, several third-party tools have been developed to convert flipbooks into downloadable PDFs by extracting page images.
Many free downloading sites rely on aggressive pop-up advertisements. Use a trusted ad-blocker to prevent accidental clicks on malicious links. anyflip to pdf download tool link
https://anyflip-downloader.com (example—always search for current active domains) If a download button is not visible, several