Variant ID on URL

This function is only available when the product has variants such as color, size, (depends on product type).

Update history state for product deeplinking shopify. It’s possible to create a deep-link directly to a specific variant by adding a query string to a product page URL. You can achieve this by appending the ?variant= query parameter to the URL of the product, along with the ID of the variant.

Please follow the instruction below

Go to theme settings
Choose product page
Enable this section to show ID on URL

Result: