Codeigniter Image Watermark

You can easily watermark images in CodeIgniter by using CI’s image manipulation class. In CI Watermarking is only available using the GD/GD2 library.

CI’s image manipulation library allows us to do image watermark in two ways with tiny configurations changes.

1. Text watermark.(wm_text)
2. Image over relay watermark.(wm_overlay_path)

Below is my test controller , you will find both text and overlay examples there.

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<?php if (!defined('BASEPATH'))     exit('No direct script access allowed'); class Test extends CI_Controller {     public function __construct()     {         parent::__construct();         $this->load->library('image_lib');              }     public function text()     {         $config['source_image']     = './uploads/pic.png'; //The image path,which you would like to watermarking         $config['wm_text']          = 'arjunphp.com';         $config['wm_type']          = 'text';         $config['wm_font_path']     = './fonts/arial-webfont.ttf';         $config['wm_font_size']     = 16;         $config['wm_font_color']    = 'ffffff';         $config['wm_vrt_alignment'] = 'middle';         $config['wm_hor_alignment'] = 'right';         $config['wm_padding']       = '20';         $this->image_lib->initialize($config);                  if (!$this->image_lib->watermark()) {             echo $this->image_lib->display_errors();         }              }     public function overlay()     {         $config['image_library']    = 'gd2';         $config['source_image']     = './uploads/pic.png';         $config['wm_type']          = 'overlay';         $config['wm_overlay_path']  = './uploads/logo.png'; //the overlay image         $config['wm_opacity']       = 50;         $config['wm_vrt_alignment'] = 'middle';         $config['wm_hor_alignment'] = 'right';                  $this->image_lib->initialize($config);                  if (!$this->image_lib->watermark()) {             echo $this->image_lib->display_errors();         }              }      }

That’s it.