I am giving 3 stars for the idea. It's the only plugin even attempting on doing this. I guess soon, Firefox will get this as a built-in feature, but until then - this would be great. If it worked (IDK, see the other comment.)

EDIT: Not sure what it does. But it seems to have a couple of static descriptions, and randomly chooses one. Potentially a malware.

I tried it. I make right click with my mouse on a google picture. But it gets me only a one line Title. and the title has nothing to do with the picture. I was looking at a racing car image, and the description was (a couple enjoying the beach). 🥴🙄😏😂😂😂😂😂😂😂😂