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Test customer account UI extensions

Feature preview

Customer accounts are getting layout and design updates. Enable the Customer account improvements feature preview to get early access. Review the feature preview overview.

Follow these guidelines to test your customer account UI extensions in different user scenarios. Recreating merchant and customer experiences helps ensure that extensions behave as desired in different locations.


The inline and order action menu extensions tutorials show you how to start generating and previewing extensions. Previewing UI extensions locally is different when you use static versus block targets.


When you're using a static target, the UI extension automatically renders in a chosen location.


When you're using a block target, merchants can place the UI extension in any of the supported placements on the page.

To preview a block extension in each supported placement, append ?placement-reference={name} to the customer account URL that's outputted by Shopify CLI. For example, ?placement-reference=ORDER_SUMMARY3.

View all placement references



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