Hello,
Thank you for reading our blog post on RankMath and for your question. We are glad to help you with your query.
The article:tag meta tag is one of the Open Graph tags that we recommend using on your website. It helps you to specify the keywords or topics that your article covers, which can improve the visibility and relevance of your content on social media platforms like Facebook.
The article:tag meta tag is not a direct ranking factor for Google or other search engines, but it can indirectly help your SEO by increasing the social engagement and traffic to your website. It can also help you to target long-tail keywords and semantic variations of your main keywords.
Rank Math adds the article:tag automatically to your posts that has tags.
We hope this answers your question and helps you to optimize your website with Rank Math. If you have any further questions or feedback, please feel free to contact us again.
Best regards