https://sourceforge.net/projects/clown/ mirror

• Implement pdf visualization by SkiaSharp (Xamarin Forms. Android, iOS, UWP and WPF backends for start)

• Rendering Pdf on Xamarin.Forms SkiaSharp canvas
• Rendering Annotations(except 3D)
• Move project to .net standard
• Performance improvements(String comparison, Remove some Reflections invocation, DOM cache)

• Images
  • Replace freeImage library by ImageSharp https://github.com/SixLabors/ImageSharp . For specific formats(tiff fax, jbig2) port mozilla pdf viewer image loading from js to c#(possible fork ImageSharp).
  • Some performance & memory hacks for large images
• Fonts
  • Font Type0(postscript) - find the way to get glyph paths on windows(maybe freetype, harfbuzz)
  • Glyph rendering code is ugly
• Encrypted PDF (take basic solution from PDF Sharp)
• Check regressions on PDF creation(cache collision).