It is a very basic HTML-version of the book, without a page flip effect. Note that this is not a Flash flipbook anymore. Instead of the Flash version, they see a highly simplified version without a page flip effect. If you still have existing Flash flipbooks, your viewers will no longer be able to read them properly. What happens to my existing Flash flipbooks? In December 2020, all major browsers completely ended support for Flash. In versions released after that, it is no longer possible to create/update Flash publications, though we do support automatic conversion to HTML5. Up until FlippingBook Publisher version 2.10.8 (August 2018), it was possible to create and update legacy Flash-publications. HTML5 is also more secure, because the Flash plugin, an easy opening for many hackers, is no longer needed to view flipbooks. They are much faster and better optimized for a variety of screens and devices. Publications created with HTML5 are supported across all browsers. Starting with version 2.8.3 that came out on November 30, 2016, FlippingBook Publisher supports the latest web standard, HTML5. All major browsers (Google Chrome, Mozilla Firefox, Microsoft Edge, and Safari) have since then gradually been dropping support for Flash and disabled it by default.

Flash is the technology that we used to turn your PDFs into interactive flipbooks until FlippingBook Publisher versions 2.7.x. Late in 2016, Adobe, the developer of Flash, confirmed that they will discontinue the Flash format by the end of 2020.

The short answer to this question is that HTML5 publications work perfectly, while Flash publications don't work at all anymore.

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