The core WooCommerce checkout process covers all of the basic fields shops needs to place an order, but what if your shop needs to offer services or additional products only at checkout? That’s where WooCommerce Checkout Add-ons comes into play. This extension allows you to add several additional options to your checkout pageand determine which are free or paid. You can also sort and filter orders based on your shiny new options.WooCommerce Checkout Add-ons can give you a way to charge for add-ons services such as rush fulfillment or gift wrapping, or can help you offer add-ons at checkout without inventory, such as stickers or insurance. Checkout Add-ons allows you to easily add several field types to your checkout page, including text fields, text areas,select (dropdowns), multi-selects, radio buttons, a checkbox, multi-checkbox, andfile uploads.