Legacy ImageMagick Discussions Archive

Dears,

I have a png file here:

http://img.hixue.com/test/p1.png

It's so big, I use fireworks to rebuild its color table, and it got much smaller, how can I use imagemagick to reduce the image file size? It seems that the file only have some unique colors, less than 256.

Thanks very much.

the optimized png file is here: http://img.hixue.com/test/p11.png

how can i use imagemagick to do it?

see http://www.imagemagick.org/Usage/formats/#png_quality

or

http://www.imagemagick.org/Usage/formats/#png_non-im

Dear fmw42,

I have tried those tools, but I can not work it out? can you give me a command that I can convert p1.png to the size of p11.png without lose much quality

there are many gray and truecolor images, so I can not just set them gray.

sorry I am not an expert on optimizing png. I have been told that optipng is one of the better tools.

thanks, can somebody help me to fix it?

you can convert to png or gif with reduced number of colors and get about the same filesize as your optimized png


convert p1.png -colors 16 p1_c16.gif

convert p1.png -colors 16 p1_c16.png

there are turecolor and gray images, I can not just set the same color numbers.