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What difference does it make?

ImageMagick can result in huge improvements in the quality of re-sized images.

Take a look at the supplied screenshot, or try it yourself. More examples will be available on the plugin website (http://wp.orangelab.se/imagemagick-engine/).

Note that the new images tend to be slightly larger than those of the standard GD library, especially if you specify a very high image quality (95+).

How do I know if I have ImageMagick installed?

If you have the PHP module installed the plugin will find it. You can check yourself using the phpinfo() function. We also automatically check a common location for the ImageMagick executable.

If you have shell access to a Linux/UNIX server you can use "which convert" to look for the ImageMagick executable.

How do I install ImageMagick?

You'll need full access to your server and a bit of technical know-how. If you do not have access you'll have to ask the server administrator.

Don't do it yourself unless you know what you are doing.

Most Linux distributions have a package for "ImageMagick". Some have a package for "php5-imagick". It is possible to install the PHP module using PEAR.

You can also find binary releases at http://www.imagemagick.org including a Windows installer.

I get a fatal error when activating plugin

Some webhosts (1and1 for example) need to add a work-around to the .htaccess file.

You might have to add the following line to your .htaccess file: AddType x-mapp-php5 .php

You'll probably have problems with various other plugins too unless you fix this.