Schema Markup Validator

Schema markup is structured data added to your HTML that helps search engines understand your content. It uses the schema.org vocabulary and can trigger rich results like star ratings, FAQs, and recipes in search results.

Google recommends JSON-LD format. It's the easiest to implement and maintain because it's a standalone script block that doesn't mix with your HTML. Microdata and RDFa are also supported but less preferred.

Schema markup doesn't directly boost rankings, but it can earn rich results (enhanced search listings) that significantly increase click-through rates, driving more organic traffic to your site.