How to use programmatically imagemagick in aem?

Hi 

Use JMagick (docs). Read the documentation.

It provides all the functionality of ImageMagick. You may also look into another ImageMagick Java wrapper, im4java.

There is a good starters document for im4java here

//

Here is an example,

/** Typical scaling implementation using JMagick **/ ImageInfo origInfo = new ImageInfo(absPath); //load image info MagickImage image = new MagickImage(origInfo); //load image image = image.scaleImage(finalWidth, finalHeight); //to Scale image image.setFileName(absNewFilePath); //give new location image.writeImage(origInfo); //save

Now you just need to create a custom component/Service to achieve the needful.

Thanks and Regards

Kautuk Sahni