# ppmdist
> Produce a grayscale version of a PPM image.
> More information: <https://netpbm.sourceforge.net/doc/ppmdist.html>.
- Produce a grayscale version of the specified PPM image:
`ppmdist {{path/to/input.ppm}} > {{path/to/output.pgm}}`
- Use the specified method to map colors to graylevels:
`ppmdist -{{frequency|intensity}} {{path/to/input.ppm}} > {{path/to/output.pgm}}`