Run a Core Web Vitals audit. Flag the worst offenders and suggest fixes.
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Run a Core Web Vitals audit on my store. Check LCP, CLS, INP across homepage, product pages, and collections. Flag the worst offenders and suggest one-tap fixes.
- Tests LCP, CLS, and INP across page templates.
- Identifies the specific assets / scripts causing issues.
- Suggests one-tap fixes (image preload, lazy-load, defer JS).
- Recommends apps to uninstall if they're the bottleneck.
What you're trying to do
Page speed is conversion. CWV failures hurt Google rankings AND lose impatient shoppers. Most Shopify stores have a few specific fixes that move them from 'poor' to 'good' in a week — preload the LCP image, defer non-critical JS, audit a heavy app. Fudge finds those fixes and applies them.
Things to watch out for
- Real user data — Fudge can integrate CrUX data alongside synthetic Lighthouse.
- App culprits — Fudge identifies apps that disproportionately impact CWV.
- Theme limits — some issues need a theme fix; Fudge writes them.
- Re-test — Fudge handles this: after fixes, re-run to confirm improvement.
How Fudge does it
Fudge runs the audit against your live store — no changes made — and delivers a prioritized report with specific findings ranked by impact. Any fix can be applied in one tap: Fudge writes the change into a draft theme so your live store stays untouched until you preview, approve, and publish.
Why Core Web Vitals matter for both Google and conversion
Core Web Vitals — LCP, CLS, INP — are Google ranking signals AND conversion drivers. Pages that load fast and render stably rank higher, convert better, and reduce bounce. The audit identifies which pages on your store have the worst scores and ranks fixes by likely traffic and conversion impact.
When to run this audit
Run the Core Web Vitals audit if your store’s performance hasn’t been assessed lately, or after any significant theme changes (new app installs, theme migrations, image-heavy launches). Especially worth doing before high-traffic moments.
The audit reveals hidden problems — apps you forgot you installed adding scripts, image sizes that ballooned over time, layout shifts on mobile that desktop testing missed.
What makes a great audit
- LCP, CLS, INP across all page types — homepage, PDP, collection, cart, checkout. Each surface scored.
- Mobile + desktop separately — most performance failures are mobile-specific.
- Worst-offending pages flagged — sorted by user impact, not by error count.
- One-tap fix suggestions — for findings Fudge can apply directly.
- Field data + lab data — Lighthouse synthetic + real-world data from Chrome UX Report.
Common mistakes to avoid
The biggest mistake is optimizing for Lighthouse scores instead of real-user metrics. Lab tests miss real-world variability; field data tells the true story.
The second mistake is fixing without re-testing. Performance fixes can interact with each other in unexpected ways. Re-run the audit after each batch of fixes.
Pair this with SEO audit + fix list and mobile UX audit — three audits that together cover ranking, conversion, and user experience.