Linux command
pngtopnm 命令
文本
涉及管道、覆盖或删除，执行前请先确认路径和参数。
常用示例
Convert PNG to PNM
pngtopnm [input.png] > [output.pnm]
Extract alpha to separate file
pngtopnm -alpha [input.png] > [alpha.pgm]
说明
pngtopnm converts PNG images to PNM (PBM/PGM/PPM) format. Part of Netpbm toolkit for image conversion. Output type depends on PNG color depth.
参数
- -alpha
- Extract alpha channel as PGM.
- -mix
- Mix with background color.
- -background _color_
- Background color for mixing.
- -verbose
- Verbose output.
FAQ
What is the pngtopnm command used for?
pngtopnm converts PNG images to PNM (PBM/PGM/PPM) format. Part of Netpbm toolkit for image conversion. Output type depends on PNG color depth.
How do I run a basic pngtopnm example?
Run `pngtopnm [input.png] > [output.pnm]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -alpha do in pngtopnm?
Extract alpha channel as PGM.