Note that JavaScript is also cached and, with the changes that have been / are being made to the way images display, it can negatively impact the customer experience. You can apply the same trick to JS files, notably in main.php toward the bottom, you'll find: {foreach from=$JS_SCRIPTS key=k item=script} <script src="{$STORE_URL}/{$script|replace:'\\':'/'}" type="text/javascript"></script> {/foreach} Add the same thing '?v=1' to that so it looks like: {foreach from=$J