An SVG (Scalable Vector Graphics) editing program. Use -z to not open the GUI and only process files in the console.
inkscape {{filename.svg}}
inkscape {{filename.svg}} -e {{filename.png}}
inkscape {{filename.svg}} -e {{filename.png}} -w {{600}} -h {{400}}
inkscape {{filename.svg}} -i {{id}} -e {{object.png}}
inkscape {{filename.svg}} --export-pdf={{filename.pdf}} --export-text-to-path
inkscape {{filename.svg}} --select=path123 --verb=EditDuplicate --verb=ObjectRotate90 --verb=FileSave --verb=FileQuit