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Overview

We’ll create a button that customers can use to launch Subtotal Link from your Shopify store and link their accounts.

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Edit the code in your Shopify theme

Sign in to Shopify Admin. Navigate to Online Store -> Themes -> Edit Code. shopify edit code

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Create a custom button

Create a new file called link_account_button.liquid and customize your button using Liquid. Here’s an example of a simple Link your Walmart account button.
Make sure you update the href to a Link URL from your Subtotal Dashboard. Include the customer_id query paremeter to ensure that any new connection is associated with this Shopify customer.
<!-- Minimal Subtotal Link Button -->
{% if customer %}
  <!-- Replace NryQamtd with your Link URL from the Subtotal Dashboard -->
  <a href="https://link.subtotal.com/NryQamtd?customer_id={{ customer.id }}" >
    Link your Walmart Account
  </a>
{% endif %}

{% schema %}
{
  "name": "Subtotal Link Button",
  "settings": [],
  "presets": [
    {
      "name": "Subtotal Link Button"
    }
  ]
}
{% endschema %}

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Add the button to your Shopify store

Customize your Store’s theme and add the Subtotal Link Button to any page.