You can perform actions in bulk in the Shopify admin. For example, you can fulfill many orders, delete many files, or publish many products in one action.
The more information you try to bulk change at one time, the longer your bulk changes will take to complete. You can also use a CSV file to bulk edit a larger number of list items for your products, your inventory, or your customers. After your CSV file is uploaded in your Shopify admin, you receive a confirmation email from Shopify at the email account that you used to set up your Shopify store.
You can select items to perform bulk actions on your Orders, Customers, and Products. You can also perform bulk actions on Discounts from your Shopify admin, but you can't perform bulk actions on Discounts in the Shopify app.
Steps:
From your Shopify admin, do one of the following:
Click Orders
Click Products
Click Customers
Click Discounts
Do one of the following:
To select items one by one, click the checkbox for each item that you want to select.
To select a range of items, click to select an item, and then hold the shift key and click another item. This selects the first and last items that you clicked, and all items in between.
To select all items on a page, click the checkbox at the top of the item list.
To select all items from your store, click the checkbox at the top of the item list, and then click Select all in this store.