For a website, I have uploaded two normal sitemaps and two image sitemaps (one for each language), respecting the structure given by Google.
While the normal sitemaps are indexed normally, only a few of the images are indexed, and I can't figure out what's wrong.
Here is a simple record from the sitemap
<url> <loc>http://www.holypopstore.com/it/footwear-uomo/2304/nike-air-max-uptempo-95-as-qs</loc> <image:image> <image:loc>http://holypopdata.s3-website-eu-west-1.amazonaws.com/images/galleries/1646/922932-400.png</image:loc> <image:title>Air Max Uptempo 95 "All Star" university blue/white</image:title> <image:caption>922932-400</image:caption> </image:image> </url>
Can anyone suggest what is wrong (in the map or in page)?