Swish: Page Speed Booster

The reviews are overwhelmingly positive about Swish’s impact on site speed and performance. Many merchants report immediate or substantial improvements in page speed scores, faster loading times, and better mobile/desktop performance after installation. A major strength repeatedly mentioned is the support team: reviewers describe them as quick, friendly, professional, and very hands-on when helping with installation, troubleshooting, and theme-specific issues. Several users also appreciate that the app is easy to install, free or inexpensive, and can deliver noticeable results quickly. The negative feedback centers on compatibility and implementation risks. A few reviewers report serious problems such as theme errors, deleted app code, broken variations, or conflicts with other essential apps, and some say the app did not improve performance or even left behind code after uninstalling. There are also complaints about unclear explanations of how the app works and concerns that it may remove unused JavaScript in ways that affect other apps. Overall, the sentiment is strongly favorable, but the reviews suggest merchants should be cautious if their store relies on multiple custom apps or complex theme code.