Hello,
Thank you for contacting Rank Math today.
Yes this feature is available, please navigate to Rank Math > Sitemap Settings > include images and featured images on the sitemap. This will then make it possible for Google to index your images and add them to the SERP. Here is a screenshot of this setting:
I hope this info helps. Thank you.
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Hello,
We are super happy that this resolved your issue. If you have any other questions in the future, know that we are here to help you.
If you don’t mind me asking, could you please leave us a review (if you haven’t already) on https://wordpress.org/support/plugin/seo-by-rank-math/reviews/?rate=5#new-post about your overall experience with Rank Math? We appreciate your time and patience.
If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.