The UR string, or - to read it from stdin.
OptionalsizeImage size in pixels (default 512).
OptionalfgForeground colour, hex (default #000000).
OptionalbgBackground colour, hex (default #FFFFFF).
OptionallogoPath to an SVG logo.
OptionallogoLogo fraction of the QR width, 0.01–0.99 (default 0.25).
OptionallogoLogo clear border in modules, 0–5 (default 1).
OptionallogoLogo clear shape, square or circle (default square).
OptionalcorrectionError-correction level by name or first letter (default low, high with a logo).
OptionalquietQuiet-zone modules (default 1).
OptionaldarkSwap foreground and background (default false).
OptionalmaxMaximum module count for the density check (default 117).
OptionaldensityWhether to run the density check (default true).
OptionaloutputOutput file; stdout when absent.
Optionalformatpng or jpeg (default png).
OptionaljpegJPEG quality, 1–100 (default 90).
mur singlearguments.