Google Adds Author Markup To Article Structured Data Recommended Properties

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Google said it has recently added the author.url property to the Article structured data documentation. Google said this "url property helps Google disambiguate the correct author of the article." But it seems Google added a number of author based properties to the document recently, not just author.url.

If you compare the document from June or so to the current one, you can see Google added added a number of author based properties to the Non-AMP recommended properties.

Here are the ones added:

Author: The author of the article. If there are multiple authors, specify them in an array
Author.name: The name of the author.
Author.url: A link to a web page that uniquely identifies the author of the article. For example, the author's social media page, an about me page, or a bio page.

Article

Adding Article structured data to your news, blog, and sports article page can enhance your appearance in Google Search results. Your page may be eligible for different features depending on how you code your page:

AMP with structured data: AMP pages with structured data can appear in the Top stories carousel, host carousel of rich results, Visual stories, and rich results in mobile Search results. These results can include images, page logos, and other interesting search result features.

Non-AMP web page with structured data: Non-AMP pages that include Article structured data can help Google understand more about the web page and show better headline text, images, and date published for the article in Article rich results.