Imagemagic image size get smaller MB

[Darknet]

How do I get the images smaller? I mean the Megabite/kilobyte not the witdth and height.

[snibgo]

Generally: choose a file type that supports compression (eg PNG, TIFF, JPG) and set the appropriate settings. At the command level, these are "-compress" and "-quality".

You might also reduce the bit depth (eg 8 bits/channel/pixel instead of 16), or use indexed (palette) storage.

I don't know how to do this in Magick++.