Your checkout scripts are off. Script tags are next.

On August 26, 2026 the legacy Thank-you and Order-status pages, checkout ScriptTags, and the “Additional scripts” box shut off for every non-Plus Shopify store. If you did not migrate, your tracking and customizations are already silent — and nothing errored to tell you.

Script tags are next, and that one is storefront-wide. As of October 1, 2026 no script tag can be created or updated, and on March 1, 2027 Shopify stops injecting them into storefronts altogether — every page of your store, not just checkout. CheckoutProof scans what is still there, scores it, and hands you the exact migration plan: Web Pixels, Checkout UI Extensions, app embed blocks, native integrations.

• Score your readiness. We read your checkout profile's upgrade status, app-visible ScriptTags, and your rendered storefront scripts — read-only, never your customers' data.
• See exactly what breaks. Every legacy script and un-upgraded page, classified by severity — with the platform-approved replacement and an effort estimate.
• Migrate and re-scan. Work the prioritized plan and the guided manual checklist, verify with a test order, and track your readiness score to 100.