On Twitter, Google’s John Mueller said that Google probably won’t index images that are linked in DIV tags for image search. An example of such an image is:
I'm pretty sure we wouldn't pick that up for image Search, but try it out 🙂— John ☆.o(≧▽≦)o.☆ (@JohnMu) 6. Juni 2018
Of course, Google will index images that are in regular IMG tags within DIV tags.
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