I have developed new kind of picture frame and would like sell it online including a printed image uploaded by the customer (manufactured by an external print shop).
Is anyone aware of a solution (platform/ template) that can both handle and manage image uploads by users and integrates itself into eg. a shopify system? Or does it require a fully custom website and backend instead?
I'm aware of print-on-demand services such as printful etc. but they don't offer the right paper format in my case.
Appreciate any tips or recommendation and thanks to all of you for sharing your insights!