How to add a "New" icon on newly added products
In all of our Shopify themes, you can show a New Icon in your store to highlight new products for your customers.
Unfortunately, Shopify doesn't provide a method that allows us to determine which products are "New" by a simple date range so we have to use a Collection.
To Enable the icons, go to your Shopify Admin > Products > Collections and create a collection. Name that collection: New and add some products and save. Any product that belongs to this Collection will show a New icon when viewed across your store.