Performance is a business issue, not only a score
A slow Shopify store creates friction everywhere: product discovery feels worse, paid traffic gets less efficient, SEO has a harder time, and mobile buyers lose patience. The PageSpeed score is useful, but the real goal is a storefront that feels fast where buyers make decisions.
Start by measuring key templates: homepage, collection, product, cart, and any landing pages used for paid traffic. A store can look fine on one page and struggle badly on another.
Clean up the obvious weight first
Images, unused app scripts, heavy tracking tags, legacy theme code, and oversized sections are usually the first places to look. Compress images, use appropriate dimensions, lazy load non-critical media, and remove scripts that no longer serve a clear purpose.
Apps deserve special attention because uninstalling them does not always remove their theme code. Performance cleanup often includes removing old snippets, duplicated pixels, and abandoned JavaScript left behind by previous tools.
Protect speed after the cleanup
Speed is not a one-time project. Add performance checks to future theme changes, app installs, and campaign launches. If every new tool adds weight without review, the store will drift back into the same problem.
The best performance process is simple: measure before, change carefully, measure after, and document what changed.