PNGParvus is C# implementation of svpng, which is a minimalistic PNG encoder.

1. Define a Color stuct. Names of struct and fields are free to take, it's size of struct that matters.

   struct Color
   {
       byte R, G, B, A;    //A is optional
   }

2. Implement the interface IPNG<Color>.
3. Invoke

   Write<TPNG, TColor>(ReadOnlySpan<char> path, TPNG png)

   or

   Write<TPNG, TColor, TStream>(TStream stream, TPNG png)

Generic type parameter TStream allows any class inheriting form Stream, thus you can output png to other streams, for example:

PNGParvus.Write<.., .., System.Stream>(Console.OpenStandardOutput(), ..);

This will output the png to console.

Run the PNGParvusTest project, and a 256 * 256 PNG test.png will be created at the folder where the compiled files locate, showing elapsed milliseconds.