- Module performs without making any modifications in the present PrestaShop file to ensure that current customization and theme improvements don't have an effect on. An Search engine optimisation schema module for PrestaShop is a plugin that enables you to insert structured data, also referred to as schema markup, to https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-google-rich-snippets-json-ld-opengraph-twitter-tags-schemaorg.html