Embed your app in the Shopify admin
By default all newly created apps are setup to embed in Shopify admin. You can follow these steps to make sure the setting is right for your app:
From your Partner dashboard , click Apps .
Click on the name of your app.
Click Extensions .
Under Shopify admin in the Embedded app section, click Manage embedded app .
If you'd like to load your app inside Shopify admin, then the setting must be enabled.
Caution
The Embed in Shopify admin app extension should only be enabled for apps that use Shopify App Bridge. If your app doesn't use Shopify App Bridge, then it won't load properly in Shopify admin. Once enabled, Shopify loads your app inside an iframe.
The size of the iframe in which your app loads can be affected by a number of factors (including the presence of our global navigation on some Shopify Plus shops). Your app must be responsive and compatible with a variety of viewport widths.
Next steps
Access the Shopify App Bridge .