Having schema markup on a website can help search engines identify web content relevant to users, but invalid schema can lead to this information being ignored. Elite Site Optimizer’s Schema Markup validator crawls your website content, identifies the schema markup entities, and validates the available properties and attributes values. It finds issues such as missing properties, attributes, and values, then provides suggestions to fix the issues. JSON-LD, Microdata, and RDFa formats can be checked and validated with ESO.