Tutorial is available at: https://feedarmy.com/kb/adding-google-adwords-remarketing-tag-to-shopify/

✅ Includes lifetime updates for Version 1 — no subscriptions, no surprises. You’ll get every future fix or improvement as long as Shopify and Google keep the same tracking structure.

🛠️ Changelog

Version 1.05 – 7 th April 2025

✨ New Features:

• Automatic Cookie Consent Handling (with Fallback) The script now respects Shopify’s customer privacy API. If a consent app is installed, it will only run tracking after marketing consent is given.
• ✅ If no cookie banner or consent app is present, the script automatically runs, ensuring tracking still works out of the box.

🧠 Improvements:

• Universal Compatibility Works seamlessly with or without cookie consent apps — no extra setup needed.
• Console Warnings Helpful messages added to the browser console when the privacy API is not detected or consent is denied — makes troubleshooting easier for store owners.

🔐 Compliance Ready (but Flexible) For stores in regions like the EU/UK/CA, tracking respects privacy laws by default. For others, no setup changes are needed — just paste and go.

Version 1.04 – 6th April 2025

✨ New Features:

• begin_checkout event added
  Tracks when a user starts the checkout process, improving funnel visibility and audience targeting.

• remove_from_cart event added
  Helps build audiences based on cart abandonment behavior.

• customer_login and customer_account_created events added
  Enables retargeting or exclusion of logged-in users and new customer sign-ups for more refined remarketing lists.

🧠 Improvements:

• Deduplication logic for purchase events
  Prevents duplicate conversions being sent to Google Ads during multi-trigger scenarios.

• Null/undefined safety added to all event handlers
  Prevents errors when product or variant data is missing—ensures reliable performance even with unusual product setups (e.g. bundles, custom apps).

• Standardized product ID generation
  All event handlers now use a centralized getItemId() function for consistent and clean tracking across all product ID formats (shopify, sku, variant_id, parent_id).

• Inline logic for begin_checkout event
  No longer depends on shared utility functions, keeping things fast and lightweight.

• Conversion callback (event_callback) added to purchase
  Ensures Google Ads recognizes the conversion even during quick page transitions or redirects.

🧼 Refactoring:

• Cleaner code structure and reduced duplication.

• All item processing logic now uses Array.map().filter() for safe and accurate payload creation.