{
 "id": "shopify-4cebe104f2",
 "platform": "shopify",
 "title": "Request a bundle size exception for existing UI extensions",
 "summary": "UI extensions using API version 2025-10 or later are limited to a 64 KB compressed JavaScript bundle per extension. Full page customer account extensions may use up to 128 KB.",
 "categories": [
  "breaking_change",
  "policy"
 ],
 "tags": [
  "API",
  "Admin Extensions",
  "Checkout UI",
  "Customer Accounts",
  "POS Extensions",
  "Update"
 ],
 "published_date": "2026-09-17",
 "effective_date": null,
 "effective_date_precision": null,
 "source_url": "https://shopify.dev/changelog/request-a-bundle-size-exception-for-existing-ui-extensions",
 "source_name": "Shopify developer changelog",
 "fetched_at": "2026-10-17T03:44:00+00:00",
 "collector": "shopify/changelog",
 "first_seen": "2026-10-17T01:05:46+00:00",
 "in_source": true,
 "last_seen_in_source": "2026-10-17T03:44:00+00:00",
 "upcoming": false,
 "url": "https://adstackwatch.com/changes/shopify-4cebe104f2/"
}