pnmtopalm
Convert a PNM image to a Palm bitmap.
TLDR
Convert a PNM image to a Palm bitmap
$ pnmtopalm [path/to/file.pnm] > [path/to/file.palm]
Specify the color depth of the resulting bitmap
$ pnmtopalm -depth [1|2|4|8|16] [path/to/file.pnm] > [path/to/file.palm]
Choose a compression method for the resulting bitmap
$ pnmtopalm -[scanline_compression|rle_compression|packbits_compression] [path/to/file.pnm] > [path/to/file.palm]
Build a custom colormap and include it in the resulting bitmap
$ pnmtopalm -colormap [path/to/file.pnm] > [path/to/file.palm]
Specify the bitmap's density
$ pnmtopalm -density [72|108|144|216|288] [path/to/file.pnm] > [path/to/file.palm]