1. Download the PrestaShop module for Better Zoom - Product Images Without Bigger image .
2. Either upload it via your PrestaShop admin area [Modules > Add a module from my computer > Module file > Browse > Upload this module]. Or unzip the file on your computer and FTP the 'betterzoom' folder to the /modules/ directory of your store, keeping the file and folder structure intact.
3. Activate the module via the Modules menu [Modules > Other Modules > Better Zoom - Product Images Without Bigger image > Install].
4. Better Zoom is now installed!
5. Customize Better Zoom as you wish [Modules > Other Modules > Better Zoom > Configure].
Very easy to install, simply place module folder on your server in the module directory and then turn it on in your backoffice.
Choose throw differents zoom types, set Zoom Level if you don't have bigger image.