Admin action and block extensions
Admin action and admin block extensions enable you to seamlessly integrate your app's functionality into the Shopify admin. These extensions enable your app to embed workflows and UX on core admin pages while automatically matching the Shopify admin's look and feel. By giving merchants access to your app's functionality, without the need to navigate away from their current task, these extensions help merchants be more efficient and productive.
You can create actions and blocks by writing extensions with UI Extensions and targeting the appropriate extension target. For the full list of admin pages that you can extend, refer to the extension target reference.
Admin actions
Anchor link to section titled "Admin actions"Admin action extensions enable you to create transactional workflows within existing pages of the Shopify admin. Merchants can launch these extensions from the More actions menus on resource pages or from an index table's bulk action menu when one or more resources are selected. After the extensions are launched, they display as modals. After they're closed, the page updates with the changes from the action.

Admin blocks
Anchor link to section titled "Admin blocks"Admin block extensions enable your app to embed contextual information and inputs directly on resource pages in the Shopify admin. When a merchant has added them to their pages, these extensions display as cards inline with the other resource information.
With admin block extensions, merchants can view and modify information from your app and other data on the page simultaneously. To facilitate complex interactions and transactional changes, you can launch admin actions directly from an admin block.

Getting started
Anchor link to section titled "Getting started"Follow the getting started tutorials to learn how to build admin action and block extensions. These tutorials are designed to be completed together to illustrate how admin action and block extensions complement each other and can be used together to build features for your app.
Developer tools and resources
Anchor link to section titled "Developer tools and resources"- Learn how to build an admin action extension that enables merchants to create a QR code for a product directly from the product details page.