TMD OpenCart watermark extension help website admin to add a logo or image to product image in no time. Admin can use existing images from the gallery or upload a new image as a watermark image. Admin can also add text as a watermark. From setting Select Image or text. After selecting the text. This module has these options
1. Enter text;
2. Color of text;
3. Font Family;
4. Text Size;
5. Position of the appearance of text on the product image.

This extension protects the product images being copied by your competitors. The product images will have your website logo printed automatically placed on the location you selected in the configuration in admin. Your product images will always represent your website hence can not be sold by unauthorized persons.

The installation of the module is damn easy. It uses OCMOD. Which makes this module to do no overwrite any existing file. Read more about OpenCart Product Images watermark module