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Shopify Integration: Checkout Upgrade for Shopify Multi-Sites

August 28, 2025 is the deadline for Shopify Merchants to replace existing Thank you and Order status pages with the new version of those pages.

The pixel script enclosed in this guide will need to be set against the correct site ID, depending on which market the user is in.

The script has been written to check the region the user is in when setting the site uuid.

How to Add a Custom Pixel in Shopify Admin

Log in to your Shopify admin
Go to Shopify Admin and sign in with your store credentials.
Navigate to the Customer Events section
In the left-hand menu, click Settings.
Under Customer events, select Pixels.
Add a new pixel
Click Add custom pixel.
Give your pixel a name (e.g. ‘’Salesfire’’).
Paste your pixel code

In the code editor that appears, paste the full pixel script.

Before saving the script, please ensure to enter the country codes and site UUID’s required are completed using the variable. Variable snippet within script:

let sites = {
  'GB': '00000000-0000-0000-0000-000000000000',
  'US': '00000000-0000-0000-0000-000000000000',
  'DE': '00000000-0000-0000-0000-000000000000',
  'FR': '00000000-0000-0000-0000-000000000000',
  'ES': '00000000-0000-0000-0000-000000000000',
  'IT': '00000000-0000-0000-0000-000000000000',
  'AU': '00000000-0000-0000-0000-000000000000',
}

SCRIPT HERE

Save your pixel
Click Save.
Your new pixel will now appear in the list of custom pixels.