Automatic CSS subsetting for `{% stylesheet %}` tags

Breaking / action requiredEffective n/a

Shopify is introducing CSS content subsetting for {% stylesheet %} tags to improve storefront performance.

Summary extracted from the official source text. Verify details on the source page.

PlatformShopify
Effective dateNo date published
Precisionn/a
Published2026-04-23
CategoriesBreaking / action required
TagsAction Required, Themes, Update
Official sourceShopify developer changelog ↗
Fetched2026-10-17T03:44:00+00:00
First seen2026-10-17T01:05:46+00:00
StatusListed by the source
Stable IDshopify-3bfad053f7 · JSON