jellybooks

This is a plugin that simplifies the integration of the Jellybooks DISCOVERY service API, and embeds interactive book samples within product pages on a WordPress site:
<ol>
<li>It connects to the Jellybooks DISCOVERY API to retrieve book samples for a given ISBN.</li>
<li>It automatically adds interactive book samples to your book product pages via our excerpts.js library.</li>
</ol>
Note: For the avoidance of doubt, admins must have a valid Jellybooks DISCOVERY account and API key to use this plugin.
For further information about the API: https://www.jellybooks.com/apis/excerpts/index.html 
For further information about the excerpts.js library: https://www.jellybooks.com/apis/excerpt_integration/index.html. That page also explains some of the various options that are configurable in the plugin admin interface.
<h3>Source code</h3>
The plugin can be downloaded and its source code can be viewed and modified (as per Open Source license). The plugin also contains Jellybooks’ <a href="https://github.com/Jellybooks/excerpts-js" rel="nofollow ugc">excerpts.js library</a> in a minified form for improved performance.
A non-minified version is included within the assets directory. The full source code for the excerpts.js JavaScript and CSS files can be found in the <a href="https://github.com/Jellybooks/excerpts-js" rel="nofollow ugc"><code>excerpts.js</code> repository</a>.

Jellybooks DISCOVERY for Publishers

The Jellybooks DISCOVERY for Publishers plugin adds instant book samples to your book product pages.

Shalom Taiwo

With Book Preview for WooCommerce, show your customers a PDF or text-based preview of your books to increase your conversion rate and get more sales. 
This plugin gives WooCommerce users an excerpt from the book that they are about to purchase. Not only does this provide some assurance for your average buyer, but it leaves impressions for future buyers as well.
FEATURES
<ul>
<li>Text-based responsive Preview</li>
<li>PDF responsive Preview</li>
<li>Easy Customization</li>
</ul>

Book Preview for WooCommerce

With Book Preview, show your customers a PDF or text-based preview of your books to increase your conversion rate and get more sales while selling wit …

Jellybooks DISCOVERY for Publishers vs Book Preview for WooCommerce