Updated 30 Aug 2026: The August 26 non-Plus checkout deadline has now passed. Shopify’s current developer documentation describes legacy ScriptTags on Thank you and Order status pages as sunset for non-Plus stores, turning the dossier from a future migration warning into an active compatibility cutoff; remaining unsupported customizations must use checkout extensions, blocks or supported pixels.
Key details
- The non-Plus Thank you/Order status deadline was August 26, 2026 and has now passed.
- Shopify’s current developer documentation describes ScriptTags on those pages as sunset for non-Plus stores on August 26.
- Shopify’s upgrade guide says stores that did not complete the migration are auto-upgraded.
- Unsupported additional scripts, legacy ScriptTag apps and old checkout customizations need supported replacements.
- Blocks and checkout extensions replace visual/functionality customizations; web pixels and app pixels replace legacy tracking patterns.
- The post-purchase cutoff is separate from Shopify’s October 2026/March 2027 storefront ScriptTag retirement.
What builders should take away
- Place test orders now and verify the live Thank you and Order status pages instead of relying on pre-cutoff configuration screens.
- Reconcile backend orders against ad-platform and analytics purchase events to detect pixels that silently stopped firing after the migration.
- Check every post-purchase upsell, survey, loyalty, support and custom-content app and confirm its replacement block is active where required.
- For app developers, remove assumptions that legacy post-purchase ScriptTags remain available and make migration state visible to merchants.
- Keep the storefront ScriptTag migration on a separate checklist; completing the post-purchase migration does not resolve the later storefront cutoff.
What changed
Shopify’s August 26, 2026 deadline for non-Plus stores to replace legacy Thank you and Order status pages has passed. Shopify’s current developer documentation now describes ScriptTags on those pages as sunset for non-Plus stores as of August 26. The Help Center’s documented migration process says stores that did not complete the upgrade are auto-upgraded to the new Thank you and Order status pages, where unsupported additional scripts, legacy ScriptTag integrations and old checkout customizations must be replaced by supported checkout extensions, blocks, web pixels or app pixels.
Why it matters
The risk has moved from future migration planning to active production verification. A store can keep processing orders while a legacy conversion pixel, survey, upsell, custom message or app-injected widget disappears from the post-purchase surface. Merchants and app developers should therefore verify actual Thank you/Order status behavior and analytics after the cutoff rather than assuming that an otherwise healthy checkout means the migration succeeded.
The August 26 cutoff is now effective
Shopify’s developer documentation says ScriptTags were sunset on Thank you and Order status pages for non-Plus stores on August 26, 2026. The old extension points should no longer be treated as a fallback for post-purchase functionality.
Remaining stores move onto the new page foundation
Shopify’s non-Plus upgrade guide says stores that did not upgrade before the deadline are auto-upgraded to the new Thank you and Order status pages. The replacement surfaces are customized through Shopify’s checkout and accounts editor and supported extension mechanisms.
Silent tracking loss is the main operational risk
Legacy code can disappear without stopping order creation. Teams should compare backend order counts with Google Ads, Meta, analytics and affiliate conversion events after the cutoff, because a missing post-purchase pixel can look like a marketing-performance collapse rather than a checkout migration problem.
Visible widgets and app behavior need testing too
Upsells, surveys, custom content and app functionality that previously relied on legacy scripts or ScriptTags may need an app block or another supported extension point. Even apps that have migrated technically can require merchants to add or enable the new block in the editor.
This is separate from the later storefront ScriptTag retirement
The August 26 cutoff applies to Thank you and Order status pages for non-Plus stores. Shopify has a separate storefront ScriptTag timeline: new storefront ScriptTag writes stop October 1, 2026 and existing storefront injection ends March 1, 2027.
What to watch next
- Post-cutoff reports of analytics, upsell or app regressions on auto-upgraded non-Plus stores.
- Whether Shopify adds stronger merchant warnings or diagnostics for functionality removed during automatic upgrade.
- Updates from major checkout/app vendors that require merchants to re-enable replacement blocks.
- Further cleanup or removal of legacy checkout APIs after the migration period.
Still unclear
- The impact is store-specific because some merchants had no legacy customizations while others depended heavily on scripts and third-party apps.
- Shopify documentation defines the cutoff and automatic-upgrade path, but individual app migrations can still require separate merchant action.
- A normal order flow does not prove that every analytics or post-purchase integration survived the cutover.
Sources
Direct reading behind this dossier.
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