The review request that used to appear after checkout is gone. The shipment tracking widget isn't rendering. Your ad platform is reporting a sharp drop in conversions starting last week, but your Shopify sales look normal.

If any of that describes your week, the cause probably isn't a broken app. On August 26, 2026, script tags stopped running on the Order status page for every non-Plus store.

Shopify has been signposting this deadline for years. Plus stores hit the same wall a year earlier, on August 28, 2025. And this isn't the end of it: on October 1, 2026 script tags can no longer be created or updated at all, and on March 1, 2027 they stop running on storefronts entirely.

Below is what actually stopped, how to check your own store without a developer, and what to do before the next two deadlines. Drawn from shopify.dev and the Shopify Help Center, researched August 31, 2026.

The short version

Only script tags on the Thank you and Order status pages stopped on August 26. Scripts running on your storefront — product pages, cart, collections — still work. They stop on March 1, 2027.

The casualties are post-purchase features. Conversion tracking, review requests, shipment tracking widgets, surveys, post-purchase upsells.

You can check your status from Settings → Checkout. If there's an upgrade notice, you're still on the deprecated pages.

What you do next depends on whether the app developer did their homework. Apps that migrated can be restored with blocks and pixels. Apps that didn't leave you two options: contact the developer, or switch apps.

What a script tag was

A ScriptTag loads JavaScript onto a store's pages without touching theme code. Each one is tied to the app that created it, and Shopify removes them automatically when that app is uninstalled.

For years this was the standard way an app added functionality to a store. It mattered most on the Thank you and Order status pages, which merchants couldn't edit directly — script tags were effectively the only route in.

The structural problem is easy to see in hindsight. Letting any app inject arbitrary JavaScript into the screen immediately after payment means Shopify can't govern the security or the speed of the moment closest to the money.

Shopify introduced theme app extensions in 2021 to replace script tags, and built dedicated mechanisms for the checkout side: blocks, web pixels, and customer account UI extensions. What happened last week is the closing phase of that migration.

The timeline

The dates published on shopify.dev, in order:

Date	What happens	Who it hits
February 1, 2025	Apps can no longer create new script tags on Thank you / Order status pages	All stores
August 28, 2025	Order status page script tags stop; additional scripts field becomes view-only	Plus stores
August 26, 2026	Order status page script tags stop	Non-Plus stores
October 1, 2026	Script tags can no longer be created or updated	All stores
March 1, 2027	Script tags stop running on storefronts	All stores

Anything you installed after February 1, 2025 never had a script tag on these pages to begin with. Which means the apps breaking right now are the ones you installed before February 2025 — the long-tenured, dependable ones. The apps you've stopped thinking about are exactly the apps most likely to have gone quiet.

What actually broke

Shopify assigns a migration path per feature type, and that mapping doubles as a checklist of what stopped working.

Tracking and analytics. Ad conversion tags, analytics scripts, attribution pixels. The replacement is web pixels and app pixels. When this breaks, your ad dashboard shows a conversion drop while actual revenue is flat. Check this first — reacting to a phantom drop by cutting ad spend turns one problem into two.

Thank you page content. Review requests, surveys, banners, social prompts, referral offers. The replacement is blocks added in the checkout and accounts editor.

Order status page customizations. Tracking widgets, extra order details. The replacement is customer account UI extensions.

Post-purchase offers. Upsells and cross-sells shown right after checkout. These survive if the app shipped block-based versions.

One thing you can't do: since August 28, 2025, the additional scripts field in Checkout settings is view-only. Hand-editing your own pasted tags to patch things up is no longer an option.

Checking your own store

All of this is visible from the admin. No developer required.

Start with your page version. Go to Settings → Checkout and look at the Configurations section. An upgrade notice means you're still on the deprecated Thank you and Order status pages. Click Review in that notice to open your upgrade guide.

Then read the upgrade guide. Shopify generates this per store, and it inventories the customizations actually present on yours. It's the fastest path through this whole problem.

The Apps section lists installed apps the developer has already made compatible. Under Tracking and analytics, Manage takes you to app pixel setup. Under Page customizations, Add blocks lets you rebuild the visual elements.

The Incompatible apps section is the one that matters. These are apps whose developers haven't shipped block or web pixel equivalents. Their post-purchase functionality is not coming back on its own. Shopify's guidance is blunt: contact the developer, or install a different app.

Check your additional scripts too. If you or an agency pasted tags in directly, the upgrade guide sorts them by purpose — authentication, order tracking, and so on — and points you at a replacement: a built-in Shopify feature, an App Store app, or a custom app.

Then publish. Once the new pages are configured, click Upgrade in the guide. From that point, customers see the new Thank you and Order status pages.

When you can revert, and when you can't

You can roll back to the old pages, but only if your store meets all three of these conditions:

Your store was created before January 6, 2025. It has pre-existing Thank you / Order status customizations built with additional scripts or script-tag apps. And you upgraded manually less than 30 days ago.

Reverting saves your block-based work as a draft configuration you can republish later. But if you don't upgrade again before your migration deadline, the pages get auto-upgraded regardless.

One trap worth knowing: pausing your store on the Pause and Build plan upgrades these pages automatically, and that upgrade can't be reverted even after you unpause. If seasonal pausing is part of how you run the store, factor that in.

Two deadlines are still ahead

August 26 only closed out the Order status page.

After October 1, 2026, script tags can't be created or updated anywhere. Once that lands, "leave it on the old method and adjust the settings" stops being available as a stopgap.

On March 1, 2027, storefront script tags stop running. Product pages, collections, cart. This is the larger blast radius of the two, and the one worth planning for now.

The storefront migration path is app embed blocks, part of theme app extensions — and notably, these work on vintage themes as well as Online Store 2.0 themes, so an older theme isn't a blocker. Scripts that only collect analytics or conversion data move to web pixels instead.

In practical terms: you'll be running this same audit again within the next eighteen months.

What this says about picking apps

This migration hands you a usable selection criterion.

Does the app track current integration standards? Apps built on theme app extensions, web pixels, and checkout blocks sail through deadlines like this one. Apps that edit theme code directly, or lean on script tags, break every time Shopify moves.

Shopify encoded this in the Built for Shopify requirements: an app meant to run in a merchant's online store must build its theme-facing elements with theme app extensions. Checking for that badge in the App Store is one shortcut to spotting which side of the line an app sits on.

What did the developer communicate? Shopify displayed install-time banners and listed non-compliant apps in every merchant's upgrade guide for over a year. An app that still hadn't migrated by last week will likely be in the same position come March 2027.

Could a native feature do it? The checkout and accounts editor now covers a fair amount of Thank you page customization directly. Worth checking before you add another app to the bill.

Wrapping up

On August 26, 2026, script tags stopped on the Order status page for non-Plus stores. Post-purchase tracking, review requests, and shipment widgets are the likely casualties.

Three things to check today: whether Settings → Checkout shows an upgrade notice, what's sitting in the Incompatible apps section of your upgrade guide, and whether your ad platform's conversion numbers dropped unnaturally around August 26.

Then there's October 1, 2026 and March 1, 2027 to plan for. The audit you run this week gives you the inventory you'll need for both — the second pass is far cheaper than the first.

App-facing changes like this typically ship with more than a year of notice. Skimming the shopify.dev changelog and your admin notifications on a regular cadence turns these from outages into calendar items.

Sources:

• Script tag deprecation (shopify.dev)
• ScriptTag functionality to be blocked as of February 1, 2025 (shopify.dev)
• The ScriptTag resource (legacy) (shopify.dev)
• Non-Plus - Upgrading and replacing your Thank you and Order status pages (Shopify Help Center)
• About theme app extensions (shopify.dev)
• Built for Shopify requirements (shopify.dev)