ImageMagick is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats like GIF, JPEG, PNG, Postscript, and TIFF. We can also use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.

ImageMagick is typically used from command line. Also we can use it from any programming language by using its interface like Magick.NET (.Net),IMagick (PHP), PerlMagick (Perl) etc.

Step 1. Install Required Packages

First we need to install required packages in order to install ImageMagic and IMagick PHP extension.

For CentOS,RHEL Users:
# yum install gcc php-devel php-pear
For Ubuntu Users:
$ sudo apt-get install gcc

Step 2. Install ImageMagick

After installing required packages, let’s install ImageMagick using following command.

For CentOS,RHEL Users:
# yum install ImageMagick ImageMagick-devel
For Ubuntu Users:
$ sudo apt-get install imagemagick

Step 3. Install ImageMagick PHP Extension

At this point you have successfully installed ImageMagick package on your system. Now are are going to install ImageMagick php extension, So that we can use it through php code.

For CentOS,RHEL Users:
# pecl install imagick
# echo "extension=imagick.so" > /etc/php.d/imagick.ini
For Ubuntu Users:
$ sudo apt-get install php5-imagick

Step 4. Restart Apache and Check Extension

After completing above steps you need to reload apache service to enable php exension using following command

CentOS,RHEL Users:
# service httpd reload

Ubuntu Users:
# service apache2 reload

Click here to read more details about ImageMagick setup and there uses.