There are two technical issues that are slowing down the Print Save Repeat site on mobile devices:
1) Reduce Unused Javascript
Excess Javascript code in your site is slowing it down. There are four ways that Javascript code can be injected in your site: when you plugin a Shopify app, when you use certain themes, when you use third-party scripts such as Facebook Pixel or Google Analytics, and if you have custom code on your site. The biggest culprit is Shopify apps. Even if you delete the app from your site, the code stays behind. This can be fixed by auditing the site’s code and removing all unused Javascript code.
2) Main Thread Issues
Main thread overload happens when too many tasks, like heavy JavaScript execution, complex CSS code, and third-party scripts, are processed simultaneously. This slows down the site’s load time. The best way to fix this is to delete unused Javascript, compress essential Javascript code, and remove unnecessary third party scripts.
Web Site Speed Results
According to the PageSpeed results, there are any significant technical issues slowing down your site on the web.
Optimization & Expected Benefits
The best solution for these problems is an audit of your Shopify theme’s codebase.
The first step would be to delete any unused Javascript code on the site and reduce the size and complexity of necessary JavaScript files. Most Shopify apps and themes inject code into the site, and this code remains even if the app is removed or theme is changed. Every so often, a developer needs to go through and optimize the code for efficiency.
The second step would be to go through your HTML code and remove any extra tags or elements that don’t serve a purpose. This makes the webpage lighter and faster to load.
This is a very common optimization that needs to be done periodically for every Shopify site. Over time, as we change our sites theme, add plugins to the site, connect more advertising pixels, etc., code accumulates under the site. Even if we revert the changes made in the theme or uninstall apps, the code often stays behind.
If properly optimized, the Print Save Repeat load time on mobile phones could decrease from ~3s to <2s. Research shows that an load time improvement of ~1 second can result in a 20-30% increase in conversion rates.
If you’d like to learn more about our Shopify Site Speed Optimization Services at