Using Custom Fields to Manage SEO Settings
Custom Fields can be used for fine-grained control of SEO settings on your Shopify products. The underlying data is stored in Shopify as Metafields so Custom Fields can access it.
Search Engine Visibility & Sitemap Visibility
Shopify instructs search engines to either index or ignore the data based on this metafield. This also controls whether or not the product shows in the store's XML sitemap.
Value: 1 for hidden, 0 (or empty) for indexable.
In practice, the HTML output of the page is updated to include the following:
<meta name="robots" content="noindex,nofollow">
Search Engine Description
Shopify usually pulls this data from the beginning of your product's description. You can override this in Shopify or use this metafield.
Type: Embed Code
Value: Text for the SEO description
<meta name="description" content="neato">
Search Engine Title
Shopify usually pulls this data from the title of your product or page. You can override this in Shopify or use this metafield.
Value: Text for the SEO title
<title>My fancy title</title>