Google launched its data highlighter tool in 2012, and it still works today despite not being migrated to the new Search Console interface, and almost no one I know uses it anymore. Google's John Mueller said on Mastodon that it just isn't easier to use the data highlighter these days with all the plugins you can add to your site to handle it automatically....
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Google Data Highlighter Tool Still Works But There Are Caveats
seroundtable.com