Hi, I have an app that provides Shopify sellers with a catalog of products that they can sell. Orders are drop-shipped as the orders are placed. I now have a new requirement that some of the items in the catalog should allow the buyer to upload a photo and zoom/position it. How would one accomplish this? Each seller could be using their own theme, so how does an app automatically add a "Customize" button to the product page which redirects them to a page hosted in the app perhaps?
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