Image Sitemap submits all of your Shopify images to Google and monitors your image indexing performance over time. Image Sitemap automatically builds, submits, verifies, monitors and updates a fully compliant .xml Google Image Sitemap for every product, collection, blog and page image in your Shopify theme.
Since 2018, Google removed their image indexing numbers from Google Search Console. Prior to 2018, the data was not very good for Shopify stores — with only a fraction of the images indexed by Google Search crawlers being shown in Google Search Console. Image Sitemap shows you the real number of your Shopify images indexed by Google over time to help you optimize your site.