pngtopam

Convert a PNG image to a Netpbm image. See also: pamtopng. More information: https://netpbm.sourceforge.net/doc/pngtopam.html.

• Convert the specified PNG image to a Netpbm image:

pngtopam path/to/image.png > path/to/output.pam

• Create an output image that includes both the main image and transparency mask of the input image:

pngtopam -alphapam path/to/image.png > path/to/output.pam

• Replace transparent pixels by the specified color:

pngtopam -mix -background color path/to/image.png > path/to/output.pam

• Write tEXt chunks found in the input image to the specified text file:

pngtopam -text path/to/file.txt path/to/image.png > path/to/output.pam