Schema markup, also called “structured data” or “rich snippets” is a way to offer context to search engines for what the contents of a page is about. This way a search engine (or other data processor) knows that a page is about a person, organisation or event.
There is also a possibility that Google displays Rich snippets in the search results.
If you have a WordPress website with multiple plugins installed there is a big change multiple plugins or the theme offers its own schema. In most cases without a possibility to turn the schema off.
This could get confusing for the search engines because how do they know which schema markup can be trusted? What if the search engine uses the wrong schema?
To offer a solution I’ve created the “Remove Schema” plugin together with TweakTheWeb.
Remove Schema on WordPress.org
The plugin is available on WordPress.org.