Microdata for adding products to Google Shopping.
https://support.google.com/merchants/answer/6069143?hl=en-AU
Widgets · eCommerce
Get access to data on 6,539,508 websites Microdata for Google Shopping Customers. We know of 2,312,272 live websites using Microdata for Google Shopping and an additional 4,227,236 sites that used Microdata for Google Shopping historically and 1,124,671 websites in the United States.
Microdata for Google Shopping websites that are also using other technologies.
Get a list of 6,539,508 websites using Microdata for Google Shopping which includes location information, hosting data, contact details, 2,312,272 currently live websites and an additional 1,097,102 domains that redirect to sites in this list. 4,227,236 sites that used this technology previouslyand 1,124,671 websites in the United States currently using Microdata for Google Shopping.
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