How UAWC Improved Core Web Vitals and Boosted SEO & Conversions by 45%
In just 6 weeks, we transformed our website with failing Core Web Vitals into a fast, stable, conversion-focused experience.
We optimized Core Web Vitals across all key templates - homepage, service pages, and blog section.
Table of contents
Key Results
- LCP (Largest Contentful Paint): 2.4s → 1.4s (–42%)
- INP (Interaction to Next Paint): 77ms → 63ms (–18%)
- CLS (Cumulative Layout Shift): 0.35 → 0.0 (–100% layout shifts)
- Performance score: 85 → 91
- SEO score: 92 → 100
- Organic traffic: +27% in 2 months
- Conversion rate: +45%
Source: Google PageSpeed Insights
Challenges
Before we started, the website had:
- Slow LCP (2.4s) and unstable layout (CLS 0.35).
- Unoptimized images and scripts that blocked rendering.
- Poor mobile UX and inconsistent SEO performance.
As a result, the site failed the Core Web Vitals Assessment, causing lost rankings and lower conversion rates.
“Initial audit: LCP over 2.4s, CLS 0.35 - site failed Core Web Vitals assessment.”
Goals
- Increase conversion rate and organic traffic by improving UX.
- Achieve “Good” Core Web Vitals on both mobile and desktop.
- Improve page load times and reduce layout shifts.
Strategy
We divided the work into four optimization sprints, focusing on measurable improvements.
1. Audit & Measurement
Used PageSpeed Insights, Lighthouse, and Chrome UX Report to identify performance bottlenecks.
2. Quick Wins
- Image compression (WebP format, lazy loading)
- Reduced render-blocking scripts
- Prioritized above-the-fold content
3. Advanced Fixes
- Implemented code-splitting and deferred non-critical JS
- Set fixed dimensions for media and banners to prevent CLS
- Preloaded fonts and critical resources
4. Monitoring & QA
Continuous CrUX and GA4 tracking to validate improvements and their impact on conversions.
“Optimization strategy focused on LCP, INP, and CLS for measurable UX gains.”
Before & After
Measured via PageSpeed Insights and Chrome UX Report (Desktop)
Tech Stack Used
- Google PageSpeed Insights & Lighthouse – performance audit
- Chrome UX Report – real-user monitoring
- Cloudflare CDN – caching & delivery optimization
- WebP & AVIF – image optimization
- GA4 + Looker Studio – performance tracking & reporting
This stack ensured both short-term gains and long-term stability of performance.
Results & Impact
The impact was immediate — within just weeks, key metrics turned green across the site.
After the optimizations:
- 100% of key pages now pass Core Web Vitals.
- +27% organic traffic growth within 2 months.
- +45% conversion rate uplift from improved UX.
- The website loads faster, interacts instantly, and retains more visitors.
Want your site to perform like this?
Hit the button below to get a FREE Core Web Vitals audit and find out how we can boost your store’s performance.
Let’s create your next success story together.
