How to reduce the kb size of image

[prashant.chourasiya]

I am trying to append two images, height of both images are same. KB size of first image is varying but kb size of second image is fixed( 1kb ). When I append both images then the new image size is over 160KB.

I need to reduce the kb size of newly created image.
Is there any way to do it while appending images or any way to reduce the kb size of an existing image?

Thanks in advance!!

[fmw42]

there are a number of things to consider, but some are image type dependent. you did not say what image type you are using -- JPG, GIF, PNG, TIFF, etc

1) -depth 8
see http://www.imagemagick.org/script/comma ... .php#depth

2) -type palette
see http://www.imagemagick.org/script/comma ... s.php#type

3) -quality
see http://www.imagemagick.org/script/comma ... hp#quality

4) -colors
see http://www.imagemagick.org/script/comma ... php#colors and http://www.imagemagick.org/Usage/quantize/#colors

5) PNG8
see http://www.imagemagick.org/Usage/formats/#png_formats

6) -map (common color table)
see http://www.imagemagick.org/Usage/quantize/#map