March 26, 2026 by Victoria Garland · 6 min read

Shopify Scripts Are Being Deprecated: What Store Owners Need to Do Before August 2025

If you’ve been using Shopify Scripts to handle custom discounts, shipping logic, or payment rules in your store, there’s a deadline you need to know about. Shopify is officially retiring Scripts and replacing them with a newer system called Shopify Functions.

The deprecation has been a rolling process. Script Editor was removed from the Shopify App Store in August 2024, and existing Scripts will stop running on August 28, 2025. If your store relies on Scripts for any part of the checkout experience, now is the time to plan your migration.

What Are Shopify Scripts?

Shopify Scripts are small pieces of Ruby code that run during checkout to customize three areas:

• Line item scripts modify cart line items (e.g., “buy 2 get 1 free,” tiered discounts, automatic gifts)
• Shipping scripts rename, reorder, or hide shipping options based on cart contents
• Payment scripts show, hide, or reorder payment methods based on conditions

Scripts run server-side, which means they’re fast and tamper-proof. They’ve been a core feature for Shopify Plus merchants since 2016.

Why Is Shopify Deprecating Scripts?

Scripts were powerful but limited. They only worked at checkout, only ran Ruby (a language most Shopify developers don’t use day-to-day), and couldn’t be extended or distributed through the app ecosystem.

Shopify Functions, the replacement, addresses all of these limitations:

• Functions run WebAssembly (Wasm), so you can write them in Rust, JavaScript, or any language that compiles to Wasm
• Functions are distributable. They can be packaged in apps and installed across multiple stores.
• Functions cover more extension points. Beyond checkout, they handle discount logic, cart transforms, fulfillment constraints, and more.
• Functions are faster. They execute in a sandboxed environment with strict performance guarantees (under 5ms execution time).

What’s Actually Changing

Here’s the practical breakdown:

The biggest shift is that Functions are code-first. There’s no visual editor like Script Editor. You write the logic in your development environment, deploy it as part of an app, and configure it in the Shopify admin.

Who’s Affected?

You’re affected if:

1. You have the Script Editor app installed and have active scripts running
2. Your checkout applies automatic discounts via Scripts (not the native discount system)
3. You customize shipping or payment options at checkout using Scripts

You’re not affected if you only use Shopify’s built-in discount system (automatic discounts, discount codes) or if your checkout customizations come from third-party apps that are managing their own migration.

How to Check If You’re Using Scripts

1. Go to your Shopify admin
2. Navigate to Apps > Script Editor
3. If you see active scripts listed, those need to be migrated
4. Note what each script does. You’ll need to replicate that behavior with Functions.

If you don’t see Script Editor in your apps, you’re not using Scripts directly. But check with any developers or agencies who set up your store. They may have installed Scripts as part of a custom build.

The Migration Path

Step 1: Audit Your Current Scripts

Document exactly what each script does. For example:

• “If the cart contains 3+ items from Collection X, apply 15% off”
• “Hide the Express Shipping option for orders over 20kg”
• “Reorder payment methods to show Shop Pay first for mobile users”

Step 2: Check for Native Alternatives

Shopify has been expanding its built-in discount and checkout customization features. Some things that previously required Scripts can now be done natively:

• Buy X Get Y discounts are now available in Shopify’s discount system
• Automatic discounts with conditions now support more complex rules
• Combining discounts via Shopify’s discount combination settings may cover your needs

If a native feature handles your use case, that’s the simplest migration path.

Step 3: Build or Install Shopify Functions

For anything that can’t be handled natively, you’ll need a Shopify Function. You have three options:

Option A: Use a third-party app. Several apps on the Shopify App Store now offer Functions-based customization. If your needs are common (tiered discounts, conditional shipping), an existing app might work.

Option B: Hire a developer to build a custom Function. This is the right call for complex or unique logic. A Shopify Function is essentially a small app that runs your custom code at a specific extension point.

Option C: Build it yourself. If you have development resources, the Shopify Functions documentation walks through setup. You’ll need the Shopify CLI, a basic understanding of JavaScript or Rust, and familiarity with Shopify’s app development workflow.

Step 4: Test Thoroughly

Functions behave differently than Scripts in subtle ways. The data model is different (GraphQL input instead of Ruby objects), execution context is different, and edge cases may surface. Test every scenario your original Scripts handled.

Step 5: Deploy Before the Deadline

Once your Functions are working and tested, deploy them and remove the old Scripts. Don’t wait until August. Give yourself buffer time for debugging.

What Happens If You Do Nothing?

After August 28, 2025, Scripts simply stop running. Your checkout will revert to default Shopify behavior:

• Custom discounts applied by Scripts will disappear
• Shipping option customizations will reset to default
• Payment method ordering or filtering will revert

There’s no gradual degradation. It’s an on/off switch. If your store depends on Scripts for the checkout experience, doing nothing means your customers will see a different (and likely confusing) checkout overnight.

Our Approach

At Victoria Garland Creative, we build custom Shopify apps and Functions using Gadget.dev, which significantly speeds up the development process. For Scripts migration specifically, we typically:

1. Audit your existing Scripts and document the business logic
2. Determine which rules can move to native Shopify features
3. Build custom Functions for anything that can’t be handled natively
4. Test across your full product catalog and checkout flows
5. Deploy and monitor post-migration

If you’re not sure where to start, reach out for a free consultation. We can review your current Scripts and give you a clear picture of what the migration involves for your specific store.

The Bottom Line

The Scripts deprecation is happening whether you plan for it or not. The upside is that Shopify Functions are better technology. They’re faster, more flexible, and will serve your store better long-term. The migration just needs to happen before the deadline.

Start by auditing what you have. If it’s simple, you might be able to handle it with native features. If it’s complex, get a developer involved sooner rather than later. The worst outcome is scrambling in the last week of August.