I'll add the microdata markup to your online store on OpenCart.
The main goal of microdata is to provide structured data to the search engine about the product/ service/organization posted on the page
As a rule, after the introduction of semantic markup, the visibility of the site in the search improves, plus an improved snippet allows you to increase the CTR of links to your site, which also contributes to the growth of positions.
I use the schema.org microdata with the validator Google.
I introduce the markup into the template code of the online store OpenCart.
- markup "contacts of the organization" on the address page or through in the footer (http://schema.org/Organization).
- marking of product page snippets (http://schema.org/Product)
- markup of pages of product categories (http://schema.org/Product with elements of commodity set with the price from and to)