Mark Howells-Mead

Forces WordPress to use the ImageMagick image library. This plugin only instructs WordPress to use the ImageMagick library. It doesn’t change how (or when) WordPress generates images, and it doesn’t provide any additional functionality for creating or resizing images.
If you need to know more about ImageMagick, then visit <a href="http://www.imagemagick.org/" rel="nofollow ugc">the official website</a>. Full information about <a href="https://codex.wordpress.org/Post_Thumbnails" rel="nofollow ugc">Post Thumbnails</a> and <a href="https://codex.wordpress.org/Image_Size_and_Quality" rel="nofollow ugc">image size and quality</a> are in the WordPress Codex.

Force use of ImageMagick image library

Forces WordPress to use the ImageMagick image library. This plugin is no longer maintained.

heiglandreas

Add Imagemagic-Support for shared installations that have no Imagick-Extension 
for PHP and have <code>open_basedir</code>-restrictions on the folder containing the 
 `convert“`-binary.
This plugin is enabled and will then be used as Image-Manipulation-library by 
the default methods of wordpress.
Currently it expects the <code>convert</code>-binary in either <code>/bin</code> or <code>/usr/bin</code>.

binaryImagemagick

Use an Imagemagick-binary for image-manipulation

Force use of ImageMagick image library vs binaryImagemagick