: You can often find the underlying image files by opening the browser's "Developer Tools" (F12), going to the Network tab, and filtering by images as you flip through the book. Pros : No third-party tools required; 100% secure. Cons : Very tedious for books with hundreds of pages. AnyFlip Desktop Version
For absolute control over the source file without risking malware, you can inspect the webpage network traffic to find the direct source elements. How to use it: anyflipdownloadcom better
