Migrate from Shopify Scripts to Checkout Rules Apps: What You Need to Know

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Last Updated: February 2026

Shopify Scripts are officially on their way out. After multiple deadline extensions, the final cutoff is now set for June 30, 2026 — and this time, Shopify isn’t pushing it back again. Every Ruby-based Script powering your checkout discounts, payment logic, and shipping rules will stop working on that date. No exceptions.

If you’ve been relying on the Script Editor to customize your checkout experience, the clock is ticking. But here’s the good news: the replacement is actually better. Shopify’s new Checkout Extensibility framework runs faster, works on all Shopify plans (not just Plus), and lets you configure checkout rules through no-code app interfaces instead of writing Ruby. For most merchants, this migration is an upgrade disguised as a requirement.

This guide walks you through everything you need to know — what’s changing, why it matters, and exactly how to replace your Scripts with modern checkout customization apps before the deadline hits.

What Were Shopify Scripts?

Shopify Scripts were small pieces of custom Ruby code that ran inside the checkout to modify pricing, payment methods, and shipping options. They operated through the Script Editor app, which was exclusive to Shopify Plus stores — meaning only merchants on the most expensive Shopify plan could use them.

There were three types of Scripts:

Line Item Scripts — Modified items in the cart. Used for BOGO offers, tiered pricing, volume discounts, free gifts with purchase, and VIP customer discounts.
Shipping Scripts — Controlled shipping options at checkout. Could rename, hide, reorder, or discount shipping methods based on conditions like cart weight, destination, or customer tags.
Payment Scripts — Managed payment gateways at checkout. Could rename, hide, and reorder payment methods based on order value, customer type, location, and other variables.

Scripts were powerful for the time, but they came with significant limitations. Every customization required a developer who knew Ruby. Changes couldn’t be distributed as apps — code had to be manually copied into each store. And the Ruby runtime was slow compared to modern alternatives.

Why Shopify Is Deprecating Scripts

Shopify isn’t removing Scripts just to annoy merchants. The deprecation is driven by fundamental platform architecture decisions:

Performance. Scripts ran in an older Ruby-based runtime that was significantly slower than its replacement. The new system uses WebAssembly (Wasm), executing checkout logic in under 5 milliseconds — roughly 100x faster than Scripts.

Security. Custom Ruby code injected directly into the checkout carried inherent security risks. The new WebAssembly sandbox provides strict isolation, preventing custom code from accessing anything outside its defined scope.

Scalability. Scripts couldn’t be distributed as apps. Every change required a developer to manually edit code in each store. The new system lets developers build checkout customization apps that any merchant can install and configure without coding.

Upgrade safety. When Shopify updated its platform, Scripts could break. The new framework is designed to be upgrade-safe, meaning platform updates won’t break your checkout customizations.

Democratization. Scripts required Shopify Plus ($2,000+/month). Apps built on the new framework work on all Shopify plans, opening checkout customization to every merchant.

The Deprecation Timeline: Key Dates You Can’t Ignore

The Scripts deprecation timeline has been extended twice, which has created confusion about what’s actually happening and when. Here’s the definitive timeline:

Date	What Happens
Mid-2023	Shopify first announces Scripts deprecation with an initial deadline of August 2024
October 2023	Deadline extended to August 28, 2025
August 28, 2025	Additional Scripts field in Checkout settings becomes view-only. Thank you and Order status page customizations via checkout.liquid begin shutdown
April 2025	Deadline extended again to June 30, 2026
January 2026	Automatic upgrades begin — customizations using additional scripts, apps with script tags, or checkout.liquid on Thank you/Order status pages will be lost if not migrated
June 30, 2026	Final deadline — all Shopify Scripts stop functioning completely

What this means right now (February 2026): The Additional Scripts field is already locked. Automatic upgrades are already happening. You have approximately four months until Scripts stop working entirely. If you haven’t started migrating, start today.

The repeated extensions suggest that many merchants have struggled with this migration — which is understandable given the scope of changes involved. But each extension came with stricter intermediate deadlines. Shopify is clearly committed to completing this transition.

What Replaces Scripts: Shopify Checkout Extensibility

Shopify’s replacement for Scripts isn’t a single tool — it’s an entire framework called Checkout Extensibility. Understanding its components helps you map your current Scripts to their replacements.

Shopify Functions

Shopify Functions are the direct replacement for Scripts. They’re server-side logic compiled to WebAssembly that runs on Shopify’s infrastructure. Key differences from Scripts:

Language: Functions can be written in any language that compiles to WebAssembly — Rust (recommended by Shopify), JavaScript, or TypeScript. But more importantly for merchants, Functions are typically packaged inside apps with no-code configuration interfaces.
Performance: Under 5ms execution time compared to the significantly slower Script runtime.
Distribution: Functions are distributed as installable apps through the Shopify App Store, not copy-pasted code.

There are currently ten Shopify Function APIs covering:

Order Discount API
Product Discount API
Payment Customization API
Delivery Customization API
Cart and Checkout Validation API
Cart Transform API
Fulfillment Constraints API
Shipping Discount API
And more

Checkout UI Extensions

Checkout UI Extensions are a bonus you didn’t have with Scripts. They let apps add custom interface elements to the checkout — upsell offers, trust badges, custom fields, loyalty widgets, surveys, and more. Scripts could only modify data behind the scenes; Checkout UI Extensions modify what customers actually see.

Shopify Pixels

Shopify Pixels replace the tracking scripts that many merchants injected into the Additional Scripts field or checkout.liquid. If you had Google Ads, Meta Ads, TikTok, Hotjar, or any other tracking code running in your checkout, Pixels are the new home for that functionality.

How Each Script Type Maps to Its Replacement

Here’s the practical mapping that tells you exactly what to look for when replacing your Scripts:

What You Had (Scripts)	What You Need Now	How to Get It
Line Item Scripts (BOGO, tiered pricing, volume discounts, free gifts)	Shopify Functions — Discount APIs	Install a Functions-powered discount app, or build a custom Function (Plus only)
Payment Scripts (hide, rename, reorder payment methods)	Shopify Functions — Payment Customization API	Install a checkout rules app like Kedra Checkout Rules
Shipping Scripts (hide, rename, reorder shipping methods)	Shopify Functions — Delivery Customization API	Install a checkout rules app like Kedra Checkout Rules
Additional Scripts (Google Ads, Meta pixel, GTM)	Shopify Pixels	Configure through Shopify admin > Customer events, or install app-based pixels
checkout.liquid (custom branding, UI)	Checkout UI Extensions + Checkout Branding API	Configure through Shopify admin > Checkout settings, or install UI extension apps

The critical takeaway: you don’t need to write code anymore. The Shopify App Store now has over 860 checkout extensibility apps. For the vast majority of merchants, the migration means replacing Script Editor code with app-based configuration.

What You Gain vs What You Lose

What You Gain

Faster checkout. Functions execute in under 5ms via WebAssembly — a dramatic improvement over the Script runtime. Faster checkout logic means faster page loads, which directly affects conversion rates.

Works on all plans. This is the biggest change for the Shopify ecosystem. Scripts required Plus ($2,000+/month). Apps built on Functions work on Basic, Shopify, Advanced, and Plus plans. If you’re on a lower-tier plan, you now have access to checkout customization that was previously impossible.

No-code configuration. Instead of writing Ruby in the Script Editor, you configure rules through app interfaces. Need to hide PayPal for orders under $50? That’s a dropdown and a number field in an app — not 15 lines of Ruby.

Upgrade safety. Shopify platform updates will no longer break your checkout customizations. The extensibility framework is designed so that Shopify can update its checkout without touching your custom logic.

Shop Pay compatibility. Checkout extensions work seamlessly with Shop Pay, which converts up to 50% better than guest checkout. Scripts didn’t always play well with Shop Pay.

Broader capabilities. The ten Function APIs cover more ground than the three Script types. You can now validate carts, transform line items, create fulfillment constraints, and offer shipping discounts — none of which were possible with Scripts.

What You Lose

Direct code access. You can no longer write and edit Ruby directly in a browser-based editor. For merchants who enjoyed the control of coding their own logic, this is a tradeoff — though most merchants relied on developers for Script changes anyway.

checkout.liquid editing. The ability to directly edit checkout HTML and CSS through Liquid templates is gone. Checkout Branding API and UI Extensions replace this functionality, but with a different (more structured) approach.

Some niche edge cases. Highly complex conditional discount stacking that combined multiple Script types may need creative workarounds. The Function APIs continue to mature, but a few edge cases may not have 1:1 replacements yet.

Nondeterministic logic. Functions cannot use randomization or clock-based logic (Scripts could). If you had Scripts that used random selection or time-of-day logic, you’ll need alternative approaches.

Step-by-Step Migration Guide

Step 1: Audit Your Current Scripts

Before changing anything, document everything you have. Go to Apps > Script Editor in your Shopify admin. Shopify has added a Scripts Customizations Report — click “Replace Shopify Scripts” in the banner to access it.

This report:

Lists all your active Scripts
Categorizes them by functionality
Links to recommended replacement apps
Suggests relevant Functions tutorials

Export this report as CSV for your records. Then manually document:

Every active Script — what it does, what triggers it, and what conditions it checks
Every tracking script — in Additional Scripts or checkout.liquid (Google Ads, Meta pixel, GTM, Hotjar, etc.)
Every UI customization — loyalty widgets, trust badges, custom fields, or branding added via checkout.liquid
Dependencies — which apps or integrations rely on Scripts to function

Step 2: Prioritize by Impact

Not all Scripts carry equal risk if they break. Prioritize your migration:

Migrate first (revenue-critical):

Discount Scripts that affect pricing (broken Scripts = wrong prices = lost revenue or margin erosion)
Payment method Scripts (broken Scripts = showing wrong payment options = conversion drop)
Conversion tracking scripts (broken tracking = ad platforms can’t optimize = wasted ad spend)

Migrate second (experience-critical):

Shipping method Scripts (broken Scripts = showing irrelevant shipping options)
Checkout branding customizations (broken branding = unprofessional checkout appearance)

Migrate third (nice-to-have):

Post-purchase page customizations
Survey and feedback widgets
Non-essential UI elements

Step 3: Choose Your Migration Path

Path A: Install checkout customization apps (recommended for most merchants)

This is the simplest path and works for the majority of use cases. Apps like Kedra Checkout Rules provide no-code interfaces to configure:

Payment method rules — Hide, rename, or reorder payment methods based on 30+ conditions including cart value, customer location, customer tags, product type, discount codes, and more
Shipping method rules — Hide, rename, or reorder shipping options based on cart weight, destination, order value, and other variables
Order validation — Block orders by email, address, cart contents, or quantity limits
Fraud prevention — Block bots, PO boxes, and suspicious orders

Where Scripts required you to write Ruby like this:

Input.payment_gateways.delete_if do |gateway|
  gateway.name == "Cash on Delivery" && Input.cart.subtotal_price > Money.new(cents: 50000)
end

Output.payment_gateways = Input.payment_gateways

An app like Kedra Checkout Rules lets you set the same rule through a visual interface: select “Hide payment method,” choose “Cash on Delivery,” set condition “Cart total greater than $500.” Done. No coding required.

Path B: Build custom Shopify Functions (for Plus merchants with unique needs)

If your Scripts contain highly specialized logic that no existing app covers, you can build custom Functions. This requires:

Shopify Plus plan
Developer skills in Rust, JavaScript, or TypeScript
Familiarity with Shopify’s Functions framework and CLI

This path makes sense for large enterprises with dedicated development teams and truly unique checkout requirements. For everyone else, Path A is faster, cheaper, and easier to maintain.

Path C: Hybrid approach

Use apps for standard functionality (payment hiding, shipping rules, basic validation) and custom Functions only for the edge cases no app covers. This minimizes development cost while ensuring full coverage.

Step 4: Migrate Tracking Scripts

This step is often overlooked but critically important. If your checkout has tracking code for ad platforms and it stops working, your ad campaigns lose attribution data — which silently destroys your return on ad spend.

For standard ad platforms:

Go to Settings > Customer events in your Shopify admin
Set up Shopify Pixels for Google Ads, Meta (Facebook), TikTok, and other platforms
Most major ad platforms have pre-built pixel integrations

For custom tracking (GTM, Hotjar, custom analytics):

Use Web Pixels for custom JavaScript-based tracking
Some tools now offer Shopify Pixel app integrations — check the App Store first
Test conversion attribution end-to-end before disabling old tracking

Important: Set up new tracking before removing old tracking. Run both in parallel for at least a week to verify that conversion data matches. Only then disable the old Additional Scripts-based tracking.

Step 5: Test Thoroughly

Testing is where most migration failures happen. Don’t skip this.

Test in a development store first. Clone your live store to a development environment and test every migration change there before touching production.

Use customer tags for staged rollout. Tag a group of test customers and have them run through the checkout with the new Functions/apps while the old Scripts still run for everyone else.

Verify identical behavior. For each Script you replace, test the exact same scenarios:

Does the same discount apply at the same thresholds?
Do the same payment methods show and hide under the same conditions?
Do shipping options appear correctly for different cart configurations?
Do edge cases work? (Empty carts, maximum quantities, international addresses, gift cards)

Test on mobile. Mobile checkout behaves differently than desktop. Test your new configuration on actual mobile devices, not just browser dev tools.

Test with Shop Pay. If your customers use Shop Pay (and they should — it converts significantly better), verify that your new checkout rules work correctly in the Shop Pay flow.

Step 6: Deploy and Monitor

Deploy during low-traffic hours. Tuesday or Wednesday morning, not Friday afternoon. Not during a sale.

Have a rollback plan. Know exactly how to revert to your old setup if something goes wrong. For app-based rules, this usually means disabling the app. For custom Functions, have the previous configuration documented.

Monitor these metrics for 48 hours after deployment:

Checkout completion rate (should remain steady or improve)
Average order value (discount rules should produce same results)
Payment method usage distribution (should match pre-migration patterns)
Error rates in checkout (should be zero or near-zero)
Ad conversion tracking (should match pre-migration attribution)

Common Migration Mistakes to Avoid

Mistake 1: Waiting Until the Last Month

Developer availability shrinks dramatically as deadlines approach. Agencies and freelancers who specialize in Shopify migration are already booking up. Waiting until May 2026 means paying premium rates for rushed work — or potentially missing the deadline entirely.

The fix: Start now. Even if you can only migrate one Script per week, that’s better than trying to migrate everything in a panic.

Mistake 2: Forgetting About Tracking Scripts

Many merchants focus on discount and payment Scripts but completely forget about the tracking code in Additional Scripts and checkout.liquid. When that code stops working, ad platforms lose conversion data. You won’t notice immediately — but your ad performance will degrade over weeks as platforms lose the data they need to optimize targeting.

The fix: Audit your Additional Scripts field and checkout.liquid for any tracking code. Migrate to Shopify Pixels before the June deadline.

Mistake 3: Trying to Replicate Scripts Exactly

Some merchants try to recreate their Scripts line-for-line in the new system. This misses the point. The new framework has different capabilities — some things are easier, some work differently, and some things are now possible that Scripts couldn’t do at all.

The fix: Focus on outcomes, not implementation. Instead of asking “How do I recreate this Ruby code?” ask “What business rule was this Script enforcing, and what’s the best way to enforce it now?”

Mistake 4: Not Testing Payment Method Changes

Payment method visibility is one of the highest-impact checkout settings. If a Script was hiding a payment method for specific conditions and the replacement rule doesn’t work identically, customers might see payment options they shouldn’t — or worse, not see options they need.

The fix: Test every payment method condition with real checkout flows. Verify visibility from different countries, customer accounts, cart values, and product combinations.

Mistake 5: Ignoring the Performance Opportunity

Scripts were slow. Functions are fast. But if you just migrate 1:1 without optimizing, you’re missing the performance improvement opportunity. The new system lets you consolidate multiple Scripts into cleaner rule sets.

The fix: Use the migration as an opportunity to clean up your checkout logic. Remove redundant rules, simplify conditions, and take advantage of app features that combine multiple Scripts into a single configuration.

Using Kedra Checkout Rules to Replace Your Scripts

For merchants looking for the fastest path from Scripts to working checkout rules, Kedra Checkout Rules replaces the two most common Script types — Payment Scripts and Shipping Scripts — through a single no-code app.

Replacing Payment Scripts

What Payment Scripts did: Hide, rename, or reorder payment gateways based on conditions like cart value, customer tags, or location.

What Kedra Checkout Rules does: The same thing — and more. Configure rules to:

Hide payment methods based on cart total, weight, product type, customer tag, country, discount code, and 30+ other conditions
Rename payment methods to display customer-friendly names instead of gateway defaults
Reorder payment methods to prioritize the options most likely to convert for each customer segment
Combine conditions using AND/OR logic for sophisticated rule sets (e.g., hide COD when cart is over $200 AND customer is new AND shipping to an international address)

Replacing Shipping Scripts

What Shipping Scripts did: Rename, hide, reorder, or discount shipping methods based on cart and customer conditions.

What Kedra Checkout Rules does:

Hide shipping methods that don’t apply based on cart value, weight, destination, or product type
Rename shipping methods to match your brand voice (change “Economy Ground” to “Standard Delivery (5-7 days)”)
Reorder shipping methods to show the most relevant option first
Apply conditional logic so customers only see shipping options that actually work for their order

What About Line Item / Discount Scripts?

Kedra Checkout Rules focuses on payment and shipping customization — the areas covered by Payment Scripts and Shipping Scripts. For Line Item Script functionality (BOGO offers, tiered pricing, volume discounts), you’ll need a Functions-powered discount app. The Shopify App Store has multiple options that handle discount logic through no-code interfaces.

The key advantage of the app-based approach: you don’t need a developer to make changes. When you need to add a new rule or modify an existing one, you do it through the app’s interface — no Ruby, no developer tickets, no waiting.

Migration Checklist

Use this checklist to track your progress:

Pre-Migration

Exported the Scripts Customizations Report from Script Editor
Documented all active Line Item Scripts and their business rules
Documented all active Payment Scripts and their conditions
Documented all active Shipping Scripts and their conditions
Audited Additional Scripts field for tracking code
Audited checkout.liquid for custom UI or tracking
Identified all app integrations that depend on Scripts

Migration

Installed checkout customization app for payment/shipping rules (e.g., Kedra Checkout Rules)
Configured all payment method rules to match previous Script behavior
Configured all shipping method rules to match previous Script behavior
Installed discount app for line item/pricing rules (if applicable)
Configured all discount rules to match previous Script behavior
Set up Shopify Pixels for all ad platform tracking
Migrated custom tracking code to Web Pixels
Configured Checkout Branding for any visual customizations

Testing

Tested all payment method visibility rules across different conditions
Tested all shipping method visibility rules across different conditions
Tested all discount rules at various cart values and product combinations
Tested checkout on desktop and mobile devices
Tested checkout with Shop Pay
Verified conversion tracking fires correctly for all ad platforms
Tested edge cases (empty carts, max quantities, international addresses)

Post-Migration

Monitored checkout completion rate for 48 hours
Verified ad conversion tracking matches pre-migration data
Confirmed no increase in checkout error rates
Documented new configuration for team reference

Frequently Asked Questions

Will my checkout stop working if I don’t migrate by June 30, 2026?

Yes. On June 30, 2026, all Shopify Scripts will stop executing. Any checkout logic powered by Scripts — discounts, payment method hiding, shipping rules — will simply stop working. Your checkout will revert to default Shopify behavior with no customizations applied. This could mean wrong pricing, wrong payment options, and wrong shipping methods showing to every customer.

Do I need Shopify Plus to use checkout customization apps?

No. This is one of the biggest improvements in the new system. While Shopify Scripts required Plus, apps built on Shopify Functions work on all Shopify plans — Basic, Shopify, Advanced, and Plus. Kedra Checkout Rules works across all plans, giving every Shopify merchant access to payment and shipping customization that was previously Plus-exclusive.

Can I keep my Scripts running until the deadline?

Technically yes — Scripts will continue to function until June 30, 2026. However, the Additional Scripts field is already view-only (since August 2025), meaning you can’t make changes to scripts there. And automatic upgrades started in January 2026 for Thank you and Order status page customizations. The smart move is to migrate now while you have time to test properly, rather than rushing at the last minute.

How long does migration typically take?

For a typical Shopify store with 3-5 Scripts, migration to an app-based solution like Kedra Checkout Rules takes a few hours — most of that time spent on testing. Stores with complex, highly customized Script logic that requires custom Functions development may need days or weeks. Either way, starting sooner gives you more time to test and catch issues.

Will my checkout be slower or faster after migration?

Faster. Shopify Functions run in under 5 milliseconds via WebAssembly — roughly 100x faster than the old Script runtime. Customers won’t notice the difference in raw speed, but the cumulative effect across thousands of checkouts improves your overall site performance metrics.

What if no app covers my specific Script functionality?

Start by checking the Shopify App Store — with over 860 checkout extensibility apps, most common use cases are covered. If your requirement is truly unique, you have two options: (1) contact app developers to request the feature — many will add it, especially for common use cases, or (2) if you’re on Shopify Plus, build a custom Function. Option 1 is almost always more cost-effective.

Can I use multiple checkout apps simultaneously?

Yes. Shopify’s Checkout Extensibility framework supports multiple apps running simultaneously. You might use one app for payment rules, another for discount logic, and a third for checkout UI elements. Shopify handles the execution order and conflict resolution. However, using fewer apps that cover more functionality (like Kedra Checkout Rules for both payment and shipping rules) reduces complexity and potential conflicts.

What happens to my Script Editor app after the deadline?

The Script Editor app will be removed from stores after the deprecation is complete. Any Scripts inside it will no longer execute. Shopify recommends exporting your Scripts for documentation purposes before the deadline — not because you’ll reuse the code, but so you have a reference for the business logic you need to replicate.

Don’t Wait — Start Your Migration Today

The June 30, 2026 deadline is firm, and the migration window is shrinking. Every week you delay is a week less for testing, a week less for catching edge cases, and a week closer to competing with every other merchant for developer and agency availability.

The good news is that for most stores, this migration is straightforward. Apps like Kedra Checkout Rules let you replace your Payment Scripts and Shipping Scripts in hours, not weeks. You get a no-code interface, broader condition support than Scripts ever offered, and a checkout that’s faster and more reliable than what you had before.

Audit your Scripts today. Install the apps you need. Test your new configuration. And cross “Shopify Scripts migration” off your list before it becomes an emergency.

Your checkout customizations are about to get better — if you make the move now.