Usage: qr - Convert stdin (or the first argument) to a QR Code.

When stdout is a tty the QR Code is printed to the terminal and when stdout is
a pipe to a file an image is written. The default image format is PNG.

Options:
  --version             show program's version number and exit
  -h, --help            show this help message and exit
  --factory=FACTORY     Full python path to the image factory class to create the image with. You
                        can use the following shortcuts to the built-in image factory classes:
                        pil, png, svg, svg-fragment, svg-path or pymaging.
  --factory-drawer=FACTORY_DRAWER
                        Use an alternate drawer. For svg-path and svg, use: circle, gapped-circle
                        or gapped-square.
  --optimize=OPTIMIZE   Optimize the data by looking for chunks of at least this many characters
                        that could use a more efficient encoding method. Use 0 to turn off chunk
                        optimization.
  --error-correction=ERROR_CORRECTION
                        The error correction level to use. Choices are L (7%), M (15%, default), Q
                        (25%), and H (30%).
  --ascii               Print as ascii even if stdout is piped.
  --output=OUTPUT       The output file. If not specified, the image is sent to the standard
                        output.