PNG Compression in .net

Question

I want to compress bitmaps to PNG with different compression levels as these levels are available in JPEG compression in C#. I have 20 to 30 images of different sizes to pro

Answer 1

According to this answer C#: Seeking PNG Compression algorithm/library PNG in C# is a lossless compression library, e.g. does not support multiple quality levels.

The wiki page on PNG (http://en.wikipedia.org/wiki/Portable_Network_Graphics) seems to confirm the compression format is lossless (e.g. has only a single compression level)

Some googling suggests there is research on lossy versions of PNG