Scott Bolinger

<p>GTINs (Global Trade Item Numbers) including UPC, EAN, and ISBN are globally recognized unique identifiers for products.</p>
<p>They are required to list your product on Google and Amazon, this plugin allows you to add your GTIN and display it on your product page.</p>
<p>Supports:</p>
<ul>
<li>Simple products</li>
<li>Variable products</li>
<li>Composite products</li>
<li>Product bundles</li>
</ul>
<p>Features:</p>
<ul>
<li>Add GTIN for main product</li>
<li>Add unique GTINs for product variations</li>
<li>Option to display GTIN on the single product page</li>
<li>Change GTIN to any other text</li>
<li>Add GTIN to structured product data</li>
<li>Works with product feeds like Google Shopping and more (requires a feed plugin)</li>
</ul>


WooCommerce UPC, EAN, and ISBN

Awesome plugin with great code

Add GTIN codes like UPC, EAN, and ISBN to your WooCommerce products.

Lehel Mátyus

<p>Wouldn’t it be nice if you had an automatically generated and always up-to-date list of the most popular retail sites selling your books?  Libreli is the simple WordPress plugin that does just that.</p>
<ul>
<li>Automatic updates of US and international stores</li>
<li>Only lists the stores that have your book in stock</li>
<li>Notifications when new stores carry your book</li>
<li>Customize the color to go with your book design</li>
<li>Generate more income by using your affiliate accounts (premium version)</li>
</ul>
<p><iframe loading="lazy" title="Libreli: Elevate your book sales" src="https://player.vimeo.com/video/559504980?dnt=1&app_id=122963" width="750" height="422" frameborder="0" allow="autoplay; fullscreen; picture-in-picture; clipboard-write"></iframe></p>
<h3>Getting Started</h3>
<ul>
<li>The plugin will create a new post type called Libreli Books</li>
<li>You can simply add new books as if you would be creating new posts by entering the ISBN for your book</li>
<li>On the Libreli Book Manager page you can see all the books you added and their available shortcodes</li>
<li>Put the shortcode on any page to display a list of stores where your book is available</li>
<li>The list of stores updates automatically (daily)</li>
</ul>


Libreli

Libreli is a simple plugin that helps you manage your books.

WooCommerce UPC, EAN, and ISBN vs Libreli