Lighthouse 95+ as the floor. INP under 200ms. Real-user data, real fixes, real numbers documented. Performance fixed at the code level — not by stuffing in another caching plugin and hoping.
What this engagement is for
You have a live site or storefront. It’s slower than it should be. Your bounce rate climbs the moment a visitor hits a 3G connection. Your INP is failing. You want it fixed without rebuilding the entire site. That’s this engagement.
We do a measured audit, write a fix plan with each item ranked by impact-to-effort ratio, then either hand it off to your team or implement it ourselves. Most engagements ship in 2–4 weeks. Most engagements move the four CWV needles enough to matter for ranking and revenue.
What we audit
- LCP (Largest Contentful Paint). Hero image strategy, font loading, render-blocking CSS, server response time, CDN configuration.
- INP (Interaction to Next Paint). Long tasks, JavaScript execution time, third-party script impact, main-thread blocking patterns. Replaced FID in March 2024 — if your last audit was before that, you’re measuring the wrong thing.
- CLS (Cumulative Layout Shift). Images without dimensions, web fonts swapping, late-loading ads, cookie banners, lazy-mounted components.
- TBT (Total Blocking Time). Synchronous third-party scripts, oversized bundles, unused JavaScript, premature hydration.
- Real-user data via CrUX. Lighthouse-lab scores lie. We pull the actual Chrome User Experience report for your site to see what real visitors experience.
- Server response. TTFB analysis — if your server takes 800ms to respond, no front-end fix will save you.
- Asset audit. Image format and compression, font subsetting, JavaScript bundle analysis, CSS dead-code analysis.
- Third-party tax. Every script, pixel, A/B-test tool, and chat widget gets measured for performance cost. We usually find 4–8 we’d cut.
What you get
A 15–25 page audit document covering everything above. Every issue is ranked: impact (high/medium/low), effort (S/M/L), expected metric improvement, and a recommended owner (dev, marketing, vendor). We include before/after benchmarks and a remediation roadmap that fits the budget you have, not the budget we’d love you to have.
If you want us to also implement the fixes, we do that as a follow-up sprint, fixed-fee. Most stores get to Lighthouse 90+ mobile within a 3-week implementation sprint.
What we’ve actually delivered
A representative slice from the last 18 months, anonymized where the client wanted:
- D2C Shopify store, US mid-market — LCP 4.6s → 1.3s, INP 580ms → 110ms, mobile Lighthouse 38 → 96. CVR lift: +14% over the following 90 days.
- WordPress B2B publisher, healthcare — INP 720ms → 180ms. Bounce on mobile dropped from 61% to 44%. Organic traffic +18% over 6 months (ranking improvements followed performance fixes).
- WooCommerce B2B, 18,000 SKUs — admin page-load 6.4s → 1.8s, catalog page LCP 5.1s → 1.6s. Internal ops time savings: ~40 hours/week across the merchandising team.
- Webflow agency portfolio — INP 410ms → 70ms by replacing GSAP scrollytelling with native CSS scroll-driven animations and IntersectionObserver. Lighthouse 100 mobile post-fix.
Pricing
- Audit only (15–25 page report): $4K–$9K, 1–2 weeks turnaround.
- Audit + implementation sprint: $12K–$32K total, 3–5 weeks.
- Ongoing perf-watch retainer: $2K–$6K/month — monthly RUM monitoring, regression alerts, quarterly tune-up sprints.
Start an audit
Send the URL and a sentence on why you’re here — failing CWV, slow on mobile, dropping in ranking. connect@prizorai.com or the form. We’ll come back within one business day with a fit assessment and a fixed-fee proposal.
