To help search engines (like google) in generating "rich results" for your site, you can add a PageMap in the form of commented html-ish markup in your .

But how to know all the useful name-value that a search engine would use and would render as rich result? Is there an official list?

1 Answer 1


Google's official list of all the rich snippets that you can get is called the "search gallery":

Explore the Search Gallery and Rich Results  |  Documentation  |  Google Developers

When you say "PageMap/DataObject tags" I think you are referring to "structured data". The official site for all structured data is Schema.org. However, using most structured data will not lead to a rich snippet. It has to be listed in the search gallery for there to be a rich snippet associated with it.

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