Raghu

<p>Added GTIN number to inventory tabs of woo product.</p>
<ul>
<li>UPC: this is the primary GTIN in North America.</li>
<li>EAN/UCC: the major GTIN used outside of North America</li>
<li>JAN: the Japanese GTIN</li>
<li>ISBN: a GTIN for books</li>
</ul>
<p>It’s very simple.</p>
<h4>Main features of Product GTIN (EAN, UPC, ISBN) for WooCommerce:</h4>
<ul>
<li>Option to show GTIN code in WooCommerce shop page.</li>
<li>Option to show GTIN code in WooCommerce product detail page.</li>
<li>Option to show GTIN code in WooCommerce cart page.</li>
<li>Option to show GTIN code in WooCommerce checkout page.</li>
<li>Option to show GTIN code in WooCommerce Order Items.</li>
<li>Option to choose the position of GTIN code inside the single product page</li>
<li>Option to add new GTIN tab in product details page</li>
</ul>
<h4>Add new code in GTIM schema:</h4>
<pre><code>add_filter('gtin_schema_data_structure_options', 'add_extra_gtin_code');
 function add_extra_gtin_code($codes){
    $codes['volume'] = "Volume";
    return $codes;
 }
</code></pre>
<p>This function paste in your functions.php file</p>


GTIN Schema for WooCommerce

Great Plugin

Add GTIN number to inventory tabs of woocommerce product.

João Carmo Pereira

<p>This plugin adds a numeric GTIN field to Simple Products and Product Variations if they exist. This field can be used on product pages and for product feeds through shortcode.<br />
Additionally, the plugin provides an options menu where users can delete all GTIN entries from the database before uninstalling the plugin.</p>


Carmo Product GTIN for WooCommerce

This plugin will add a numeric GTIN field to Simple Products and Product Variation if they exist.  This field can be used via shortcode [carmogtin] on …

GTIN Schema for WooCommerce vs Carmo Product GTIN for WooCommerce