You can now create FlipBook with just HTML (Recommended)

All you need is to include the necessary files.
<div class="_df_book"
    source="example-assets/books/dflip manual.pdf">

Plus you can pass some of the parameters too!!
<div class="_df_book" height="500" webgl="true" backgroundcolor="teal"
    source="example-assets/books/dflip manual.pdf"

This is just a basic example. Refer to other examples for further usages.

jQuery Flipbook Wordpress Flipbook