"inkscape --without-gui --export-background=0x000000 "
"--export-background-opacity=0 -d %f %s --export-png=%s",
config.dpi, config.svg_file, filename_png);
"inkscape --without-gui --export-background=0x000000 "
"--export-background-opacity=0 -d %f %s --export-png=%s",
config.dpi, config.svg_file, filename_png);