Visualizing ASP.NET Core endpoints using GraphvizOnline and the DOT language

In this post I show how the endpoint routes in an ASP.NET Core 3.0 application can be visualized using the GraphvizOnline service. That lets you create diagrams like the following, which describe all the endpoints in your application: GraphvizOnline is a GitHub project that provides an online vizualizer for viewing graphs specified in the DOT graph description language.