Schema markup generator tool by Marco Ilardi

A markup provides a structured way of describing the content on a webpage to search engines, which can help with search engine optimization (SEO) and improving the visibility of a website in search results.

A Knowledge Graph ID (KGID) is a unique identifier assigned to an entity in the Google Knowledge Graph, a database of information used by Google to enhance its search results. When a website includes a markup with a KGID, it helps Google understand the relationship between the entity and other related entities, which can help with more accurate search results.

Without a KGID, the markup may still provide some benefit for SEO, but it will not be as effective in helping Google understand the entity and its relationships to other entities. So, including a KGID can provide additional context and make the markup more effective.