Seber Cart uses a built in PHP library to resize product images into the thumbnail image.  Sometimes the scaling does not produce the best results and it may be beneficial to replace the thumbnail file with a worked thumbnail file.

This tutorial will take you through the process of replacing an exisiting thumbnail for a product.

• Before replacing the thumbnail file you should check that the new thumbnail is not too large.  You can check the maximum width and height of your thumbnail images by checking the settings in Configuration->Products.  Making your thumbnail larger then the sizes set here will break the layout of the store.
• All product thumbnails are stored in the /images/stories/sebercartthumbs folder on your website.
• The images are stored as the product key and then the image extension
• From the Seber Cart->Products page you determine the product key from the product list.  The product key is the first column in the product list.
• In the image below you can see that the empty box as a product key of 7
  
• If we look at the sebercartthumbs folder we can see that there is a 7.png file (for example)
• All we need to do is delete this file and replace it with our new one.