When I run filters on PNG files the PPI is reduced from 300x300 to 72x72, I am unable to find a setting to override this behavior.
Example settings
gmic.exe input.png fx_blackandwhite 0.3,0,0.3,0,0.3,0,6,6,6,0,-18,18,18,18,1,3,3,3,6,3,3,0,0,50,50 -o output.png
If I convert the file to JPG first the PPI is maintained.
I would greatly appreciate any guidance available.