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On August 28, 2025, Shopify will stop supporting Additional Scripts, forcing all stores to migrate to its new system: Checkout Extensibility.
As an agency specializing in measurement, conversion, and advanced analytics, we know this change can have a direct impact on how you capture data, track conversions, and personalize your checkout.
What are Additional Scripts?
For years, they were the standard way to add functionality without touching the core checkout. But that's changing now.
Additional Scripts are pieces of code (usually JavaScript) that are placed in the checkout for tasks such as:
Why does Shopify remove them?
Shopify is moving toward a more secure, scalable, and modular architecture. Checkout Extensibility is its new framework for customizing the checkout process using approved apps, APIs, and components.
But it also means that everything you used to do with scripts now requires a new strategy.
- Improves checkout speed and security .
- Ensures compatibility with new features.
- Facilitates long-term maintenance .
How does this affect measurement?
This transition can break measurements if not managed well.
Some real examples:
🚫 Google Ads or Meta tags may stop firing.
📉 The GA4 funnel may have gaps or incomplete data.
❌ Apps like Wishlist Plus, Reconvert, or heatmap tools may crash if they rely on these scripts.
What if you don't know where to start?
If you're unsure whether your store is using scripts or how to replace them, we at Rocket Digital can help you:
Want a quick audit of your current setup?
Write to us and we'll help you identify what you need to change and how to adapt it to the new Shopify ecosystem.