Usage: grim [options...] [output-file]

  -h              Show help message and quit.
  -s <factor>     Set the output image scale factor. Defaults to the
                  greatest output scale factor.
  -g <geometry>   Set the region to capture.
  -t png|ppm|jpeg Set the output filetype. Defaults to png.
  -q <quality>    Set the JPEG filetype quality 0-100. Defaults to 80.
  -l <level>      Set the PNG filetype compression level 0-9. Defaults to 6.
  -o <output>     Set the output name to capture.
  -T <identifier> Set the identifier of a foreign toplevel handle to capture.
  -c              Include cursors in the screenshot.