Shopify Facebook pixel is also known as Meta pixel. It is an analytical tool that generates a tracking code from your Facebook ads account and gets integrated into the header section of your Shopify eCommerce website.

The Facebook pixel for Shopify monitors your visitors’ performed actions and collects the data for you to help you refine your Facebook and other social media platforms’ advertising/marketing campaigns and maximize performance accordingly.

The data collected by Facebook pixel for Shopify can be used to display your ads to multiple audience groups based on their activities performed on your Shopify webstore.

Read here https://magecomp.com/blog/add-facebook-pixel-on-shopify

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