Sample web API

I'm trying to learn about web APIs and was wondering if you could help me with a simple one to retrieve information about an online image.  An example URL could be

How could I build a RESTful API which accepts the image url as a parameter and retrieve information about the image must be retrieved responding in JSON format.  Is it also possible to create a web client to call the API.  It only needs a single page to accept input for the url, a button to call the API, and an area to display the response.

I'm using C# within Visual Studio 2017 community edition.
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kaufmed   ¯\_(ツ)_/¯My Bit Shift Brings All the Boys to the YardCommented:
This is really outside the scope of a question here at EE. My suggestion is to start where we all started:  the official ASP.NET Web Api site. It's fairly straight-forward to go through.

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web api

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