Ah, so if I understand correctly the generator has control over a single element of the page, and not multiple elements. I can see how that could make it more difficult.
Hmm... and it seems all we can see is the generator, not the generated content. That is, likely cannot embed the meta text in an alt tag or the like.
I do see that the meta text is in separate text elements in the SVG export, though. It would be fairly easy, after manually exporting the image as SVG, to tweak the appearance.
Thanks for the quick response. I've got some things to think about.