Automatic Schema Markup for Perfectly Optimized Content. Schema Plugin – Best Structured Data Tool. Get The Next Generation of Structured Data. Enhance Your Site Presentation in Search Results. Schema.org Vocabulary: Schema.org markup is code (semantic vocabulary) that you put on your website to help the search engines like Google return more informative results for users. Schema Plugin: We’ve developed Schema plugin to automatically implement valid schema.org markups to WordPress injson-ld format, the most recommended by Google. Improve Your Site: Schema.org markup improves your site appearance in search results leading in higher click-through and conversion rates for your business.