Find what is slowing your Shopify store down.

A practical review of Core Web Vitals, apps, scripts, images, fonts, theme code, and the experience behind the score.

SHOPIFY FIELD GUIDE

SPEED AUDIT

Useful · Practical · No email gate

How to use this: Work through the tool with the people who own the storefront, marketing, analytics, and operations. Record evidence and owners—not just yes/no answers.

YOUR PROGRESS

0 of 12 reviewed

✓MeasurementCompare field data and lab tests instead of relying on one Lighthouse run.✓MeasurementTest representative home, collection, product, cart, and campaign pages.✓Largest Contentful PaintIdentify the actual LCP element and confirm it loads with appropriate priority.✓Interaction to Next PaintFind long JavaScript tasks and slow interactions on navigation, variants, cart, and search.✓Cumulative Layout ShiftReserve space for media, banners, apps, fonts, and asynchronously inserted content.✓Apps & scriptsInventory third-party code, ownership, business value, load timing, and duplicate functionality.✓Theme codeReview render-blocking assets, repeated libraries, section JavaScript, and unused legacy code.✓Images & videoCheck responsive sizing, modern formats, lazy loading, poster images, and mobile payloads.✓FontsLimit weights, preload only critical fonts, and use a sensible fallback strategy.✓AnalyticsConfirm tags are not duplicated and consent behavior does not cause unnecessary re-execution.✓GovernanceCreate a performance budget for new apps, campaign assets, and storefront features.✓ValidationRe-test critical journeys on realistic mobile devices and slower network conditions.

READ THE RESULT

A completed checklist is a starting point—not an audit conclusion.

Items need evidence, context, and prioritization. A problem affecting a high-traffic purchase journey may matter more than ten minor cleanup tasks.

Turn findings into owners, expected outcomes, and a measured sequence of work.

WHEN YOU NEED A SECOND SET OF EYES

Turn the findings into a focused plan.

Share the context and what the tool surfaced. We’ll respond with a practical next step—not an automatic call request.

Explore speed optimization ↗

Related resources

Custom theme development →CRO audit checklist →