Shopify App

Shopify shut off legacy checkout scripts on
August 26, 2026.

Non-Plus stores lost the legacy Thank you and Order status pages, checkout ScriptTags, and the order-status Additional scripts box. (Shopify Scripts on Plus already stopped June 30, 2026.) If you did not migrate, whatever lived there is already dead — and nothing errored to tell you. CheckoutProof scans your store and shows exactly what stopped — and what to run instead.

Scan my checkout readiness Try the free check first How it works

Now on the Shopify App Store. Free plan available — Pro from $29/mo with a 7-day trial. Reads only store config and public store pages; we never touch your customer data.

The deadline passed, and the damage is silent

Shopify has retired checkout customizations that run outside its new extensibility model. If any of your tracking, upsells, or order-status tweaks still live in the legacy surfaces, they have already stopped working. CheckoutProof finds them before your customers do.

Checks your upgrade status

We read your checkout profile to see whether the new Thank you and Order status pages are already live — the single biggest signal of where your store stands.

Classifies your ScriptTags

Every ScriptTag visible to the app is classified by where it runs and what the legacy shutoff took with it — so nothing critical stays broken silently.

Recognizes legacy trackers

We match the scripts rendered into your public storefront HTML against a recognizer map of known trackers — GA/GTM, Meta, Klaviyo, TikTok and more — and an AI pass on Pro identifies the unknown ones and names their Web Pixel replacements.

Maps each finding to its fix

Every finding is mapped to its platform-approved replacement — a Web Pixel, a Checkout UI Extension, or a Function — with an effort estimate so you can plan the work.

From at-risk to ready, in three steps

Everything runs inside Shopify. Install, scan, and get a migration plan — no developer needed to see where you stand.

Scan

Install CheckoutProof and run a scan. It reads your checkout upgrade status, your ScriptTags, and your public storefront HTML, then scores your store 0–100 against the surfaces that are now off.

Plan

Work the findings worst-first. Each is mapped to its approved replacement — Web Pixel, Checkout UI Extension, or Function — with an effort estimate, plus a guided manual checklist for surfaces no API can read.

Monitor

Pro re-scans your store every week, so a newly added app or script can't quietly reintroduce a legacy dependency. Then prove it with a post-migration test order.

What CheckoutProof looks at

Three sources, one readiness score — plus a manual checklist for the surfaces no app can see.

Checkout profile upgrade status App-visible ScriptTags Public storefront HTML Guided manual checklist

Honest about what we can and can't see

Shopify's ScriptTag API is app-scoped, so no app can see every script on your store. That's exactly why the report includes a manual checklist. CheckoutProof is a migration-planning tool — the real proof is your post-migration test order.

What CheckoutProof does

  • Reads your checkout profile upgrade statusWhether the new Thank you / Order status pages are live
  • Classifies the ScriptTags visible to the appBy where they run and what the shutoff broke
  • Matches storefront scripts to a recognizer mapGA/GTM, Meta, Klaviyo, TikTok and other known trackers
  • A 0–100 readiness score with your shutoff statusPlus each finding mapped to its approved replacement
  • A guided manual checklist (Pro re-scans weekly)For the surfaces no API can read

What it isn't

  • A guarantee it caught every scriptThe ScriptTag API is app-scoped — that's why there's a checklist
  • A one-click migration that rewrites your checkoutIt plans the work; you (or a dev) implement the replacements
  • A substitute for a real test orderThe proof is placing a post-migration order and verifying it
  • Anything that touches customer dataReads only store config + public storefront HTML

Simple pricing

Start free with full results. Upgrade when you want unlimited scans and weekly monitoring.

Free
$0
  • 3 scans per 30 days
  • Full 0–100 readiness score
  • Your shutoff date and status
  • Every finding mapped to its fix
  • Complete prioritized migration plan
  • Guided manual checklist
Pro
$29 /mo
or $290/yr — save ~17%
  • Everything in Free
  • Unlimited scans
  • AI identification of unknown trackers
  • Automatic weekly monitoring
  • 7-day free trial

Reviews

Reviews live on the Shopify App Store

Merchants review CheckoutProof where they install it. Read what they say, or leave your own there. It helps the next merchant decide, and it helps a small studio more than you'd think.

Read and write reviews

Know where your checkout stands right now

Score your store, see exactly what stopped, and get the migration plan to fix it.

Get CheckoutProof — free

Now on the Shopify App Store.

CheckoutProof helps you plan your migration off Shopify's legacy checkout surfaces now that they're shut off. It reads only store configuration metadata and public storefront HTML — no orders, no customers, no Protected Customer Data. Because Shopify's ScriptTag API is app-scoped, no app can see every script on your store; the report includes a manual checklist for that reason, and the definitive proof is a successful post-migration test order. See our privacy policy.