I use Imagemagick convert to convert pdf file to png as follows:
Magick convert -density 300 PointOnLine.pdf -quality 90 PointOnLine.png
It gives warning:
convert: profile 'icc': 'RGB ': RGB color space not permitted on grayscale PNG `PointOnLine.png' @ warning/png.c/MagickPNGWarningHandler/1744.
And png image created is all black. However, convert to jpg image is fine. What is the problem? Thanks.
Best Answer
Try adding -colorspace RGB before the outfile name.