Thease samples can for example be used to make .NET Core console application whitch uses SkiSharp the open source 2D graphics library.
The png files used for input datas are from the below site.
simple sample
simple sample for using font to remove tofu.
The console application version of the sample code in the below url.
https://docs.microsoft.com/xamarin/xamarin-forms/user-interface/graphics/skiasharp/basics/circle
The console application version of the sample code in the below url.
https://docs.microsoft.com/xamarin/xamarin-forms/user-interface/graphics/skiasharp/basics/text
Sample for loading bitmap images from resource file, web and local file.
Sample for dwawing Textbox by using RitchTextKit https://www.toptensoftware.com/richtextkit/