Command-line of ImageConverter Plus offers several basic possibilities to alter graphics which includechanging colors of the image and defining a transparent color . Command-line of ImageConverter Plus offers four operations in this respect:
src_color – source color (default – transparent)
dest_color – destination color (default – transparent)
tolerance – color tolerance (default – 0)
smooth – use smoothing (default – yes)
Please note that not all the graphic formats support transparency. For instance, if the file is saved in the BMP format, the color will appear white instead of transparent.