GTIN Schema for WooCommerce is a free WordPress plugin designed to integrate GTIN codes into WooCommerce product listings. This plugin supports various GTIN formats, including UPC, EAN/UCC, JAN, and ISBN, making it versatile for different markets. Users can easily add GTIN numbers to the inventory tabs of WooCommerce products, enhancing product visibility and compliance with industry standards.

Key features include options to display GTIN codes on the shop page, product detail page, cart page, and checkout page. Additionally, users can customize the position of the GTIN code on the single product page and add a new GTIN tab to the product details. A filter function allows developers to extend the GTIN schema data structure, providing flexibility for further customization.