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 the collection, New and add some products to this collection which would be considered as New.
Click save when ready. These products will now show a New icon on the site. To remove that Icon from a product, simply remove that product from the New collection.