Set the maximum number of significant digits to be printed.

Image preview type.

Interpret string and print to console.

convert rose: -format "%wx%h\n" -write info: x.png

convert rose: -print "%wx%h\n" x.png

Output=70x46

Process the image with a custom image filter.

Manage ICM, IPTC, or generic profiles in an image.

Specify the output image quality.

$cmd = "$input -quality 10"; 
exec("convert $cmd quality.jpg");

( Only works for jpg, miff and png images 100 = least compression so best quality. )

Reduce colors in this colorspace.

Suppress all warning messages.

( Error messages are still reported. )

Blur around the center of the image.

$cmd = "$input -radial-blur 10"; 
exec("convert $cmd radial_blur.jpg");

Lighten or darken image edges.

$cmd = "$input -raise 10"; 
exec("convert $cmd raise_up.jpg");

Lighten or darken image edges.

$cmd = "$input +raise 10"; 
exec("convert $cmd raise_down.jpg");

Explicit read of an image, rather than an implicit read.

Prevent updates to image pixels specified by the mask

Set the red chromaticity primary point.