Bulk Structured Data plugin

Wanting to try to add structured data to images on my website to make them show as licensable via Google Images search returns.

Going forward I can do this by creating & using an IPTC template to embed the data into the image before uploading to my site.

For images that are already on my site, is there a plugin that will allow me to add the necessary structured data in bulk, rather than on an image by image basis?

Thank you.