Black has Alpha Channel 0

[hollandar]

The default definition for Black in NET CORE is new Color(0) which has an alpha channel of 0. This causes the SVG Renderer to render a transparent svg.

I am overriding your defaults such that Foreground = new Color() { A = 255, R = 0, B = 0, G = 0 }
Works perfectly then.

Thanks.

[micjahn]

Thanks for reporting. Now I know why I never saw an image as I tried the ASP.Net Core demo with SVG output.