Shopify Speed Optimization Blog

Welcome to the Thunder Page Speed blog — a library of hands-on guides for making your Shopify store faster and more profitable. We cover everything that moves the needle: Core Web Vitals (LCP, CLS, INP), image and font optimization, third-party script management, theme performance, and the conversion wins that follow. Every article is grounded in real store audits and measured testing, not theory, and most fixes come with step-by-step instructions you can apply the same day. Whether you are diagnosing a slow store for the first time or chasing a 90+ PageSpeed Insights score, you will find an answer below — the newest guides are listed first.