Google Only Understand Image in img src=image path and not data-src= image path

[Johny12345]

Hello Moz Team

Actually for my ecommerce site at product page for one product i have many images and what my developer did for 1st image is on Img src format but other images load on after click for that they have used data-src= image path, data-big= image path so Google Only Understand Image in img src=image path and not data-src= image path?

1. If yes that means only img src = image path will index in google and not other images?2) So in images sitemap xml I have to submit only images scr = images path images only?3) Currently in my images sitemap xml all images are there either img src, data-src etc so what will google do here? He will ignore data-src images or he will try to search on website ? Will he confuse or use by bandwidth or crawl rate? Can you pls guide me?

Thanks!

[Johny12345]

Hi All,

Can anyone reply for my query? It's very important for me to take further action.

Thanks!