The Schema Markup Checklist is a comprehensive guide to help ensure that your webpages are accurately marked up with structured data. It includes a list of common Schema types, along with a detailed breakdown of the necessary fields and properties for each type. It also provides guidance on how to properly implement Schema markup, including best practices for coding, testing, and troubleshooting. Additionally, the checklist contains a set of helpful resources to help you get the most out of your structured data. With the Schema Markup Checklist, you can be sure that your webpages are properly marked up for maximum search engine visibility.