Why you need it: A slow store hurts conversion and mobile UX. The issue is usually not Shopify - it’s JS bloat, third-party scripts, heavy sections, and unmanaged images.
What I do: I improve real user speed, not just “Lighthouse scores.”
How I do it: CWV/Lighthouse + real-world signals → find render-blocking → reduce JS → image/font strategy → section/template cleanup → re-test.
Why me: Maintainable fixes so performance doesn’t regress two weeks later when marketing adds scripts.
Result: Faster key templates, more stable CWV signals (where achievable), less mobile lag.
How to start: Store URL + 3 critical templates (home/collection/PDP) + list of heavy apps/scripts (if any).