If i'm not mistaking... This is a big thing, because it wasn't possible (untill now)... It was one of the major hurdles of .Net core that System.Drawing was not available ( eg. image resizing).

Good work!

Edit: As mentioned on : https://www.hanselman.com/blog/RFCServersideImageAndGraphics...

Currently, as of the time of this blog post's writing, .NET Core has no good built-in option for image resizing or image generation/creation. There is no System.Drawing because there is no Win32 GDI. There are some options, that I'll point out later, but this clearly hasn't been a priority so it's not done yet. There has been some work on System.Drawing.Graphics, but it seems stalled.

Nathanael Jones is the very accomplished author of ImageResizer and the primary at Imazen, an imaging software company. I've talked about ImageResizer before, it's fantastic. Nathanael has been pushing hard to get folks at Microsoft to commit to a story around Server-side Graphics in ASP.NET 5 and recently updated his own roadmap with respect to ImageResizer and the new ASP.NET 5 (that runs on .NET Core as well as the full .NET Framework). Take a moment and read it, there's a lot there. Concerns about how to call native code, how to distribute managed code that has to call native code, and lots more. I've worked with Nathanael for the last year trying to work out some way to solve this problem but it hasn't worked out well. Big company, sigh.

Edit 2: Even a successfull kickstarter about this: https://www.kickstarter.com/projects/njones/imageflow-respec...