Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
Help to make JNG 80% / 65% quality of main image / alpha channel if the alpha channel compression JPEG.
And 80% / 9lvl quality of main image / alpha channel, if the compression alpha PNG.