Facebook like buttons on your product pages are a nice touch to your social media marketing endeavors. However, it's quite discerning when someone shares your product page and posts a button or other stupid image instead of the product image. Several requests lead me to try to solve this... and I believe I have, with the following "tweak" for your Zen Cart. First make sure you are using the Facebook Like button on your product pages. Next you are going to add a simple edit to your html_header.php So navigate to includes/templates/your_template/common/html_header.php and back it up! If you lack a html_header.php in that loaction got to includes/templates/template_default/common/html_header.php download it and upload it to includes/templates/your_template/common/ Now, at some logical location we will add one line of markup using the Facebook Open Graph protocol for the meta property="og:image" Generally speaking we want to add this without breaking up a php process. I suggest you add it right after You will be adding the following line: Worked out and provided for free by PRO-Webs http://pro-webs.net/