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Website Redesign & Conversion Optimization Case Study

Lubble Team
[lmt-post-modified-info]
In this website redesign case study, I'll examine my teams work on a business's website. We'll review the goals, design decisions, and how they impacted the site's conversion rates.
Website Redesign Case study above the fold before and after

Overview

Simple design changes can produce outsized business outcomes. A Microsoft case study featured in Harvard Business Review demonstrated how minor UX adjustments translated into millions in incremental revenue. This project applied the same principle at scale, optimizing a website with hundreds of local landing pages to identify the design patterns that most effectively drove phone-call conversions.

There is no universal website design that works for every brand. Performance depends on audience intent, device context, and clarity of action. What succeeds for one business can fail for another. Our goal was to determine, through disciplined experimentation, what worked best for this specific audience.

Results Summary

After six months of structured A/B testing and iterative design improvements:

  • Sitewide conversion rate increased from 5.03% to 14.24%
  • Organic and paid sessions increased 122%, from ~90,000 to 207,000
  • Phone calls increased 137% year over year
  • 12,650 incremental calls generated
  • Estimated incremental revenue: $1.25M
  • PPC landing pages achieved up to 26.06% conversion rates

Testing Methodology

We conducted continuous experimentation across multiple platforms, including Google Optimize and Unbounce, testing incremental changes rather than wholesale redesigns. Key variables included:

  • Headlines and title length
  • CTA wording and button behavior
  • Mobile navigation and layout
  • Trust elements such as reviews
  • Font size and visual hierarchy
  • Breadcrumb visibility
  • Footer and floating call buttons
  • Mobile responsiveness and viewport optimization

Each change was validated with statistical confidence before rollout.


Key Findings

1. Headlines Matter More Than Expected

Headline testing produced some of the most dramatic results. On a Las Vegas location page, simply shortening the headline by removing two words doubled the conversion rate from 5.03% to 11.19%. A parallel test on the Kansas City page confirmed the result, reaching 11.01%.

Google Optimize reported 95% confidence that the shorter headline outperformed the longer version. Further CTA refinements increased conversions to 14.9%.

In practical terms, if this test were repeated 100 times, the shorter headline would outperform the longer one approximately 95 times.

2. Click-to-Call Beats “Request a Call”

Lead quality analysis revealed a critical insight:

  • “Request a call” leads closed at ~10%
  • Direct phone calls closed at ~25%

By converting all primary CTAs to click-to-call actions, we removed friction and aligned the design with user intent. This single change materially increased both call volume and revenue.

3. Mobile Optimization Was the Largest Lever

Mobile users were far more likely to convert when the experience was explicitly designed for phone calls.

  • Desktop-only Unbounce page: 11.92% conversion rate
  • Mobile-optimized version: 21.88% conversion rate
Website Redesign Case study above the fold before and after

Improvements included:

  • Reduced mobile menu height
  • Clearer CTAs (“Call Now” vs “Request Pricing”)
  • Shorter headlines
  • Visible breadcrumbs
  • Floating footer call button

Each change increased the probability that a user would place a call within seconds of landing.

4. Trust Elements Drive Action

Trust signals consistently improved performance, especially above the fold:

  • Star reviews
  • Clear category heuristics (size, capacity, weight)
  • Simplified comparisons

This aligns with Google’s research on the “messy middle” of the buyer journey, where reviews are among the most influential decision factors.

5. Content Length Matters Less Than Structure

Longer pages did not outperform shorter ones by default. What mattered was:

  • Clear above-the-fold messaging
  • Mobile-friendly layouts
  • Prominent CTAs
  • Immediate trust cues

Users self-selected into deeper content as needed. Strong structure outperformed sheer volume.

Performance & Technical Optimization

The final phase focused on site performance and Core Web Vitals. After optimizing scripts, layouts, and load behavior:

  • 95–100 Lighthouse scores
  • Perfect Core Web Vitals

Speed improvements are not cosmetic. Industry benchmarks show measurable revenue impact from even sub-second gains, reinforcing the business case for UX and performance investment.

These minor changes influenced the probability that someone would make a phone call.

On mobile, we A/B tested a floating footer element to the bottom of the page with an easy-to-click button making it even easier for users to call us.

Footer elements floating bar

Combined Impact

After deploying all changes across the live site and pairing them with refined PPC strategy:

  • 26.06% average nationwide PPC conversion rate
  • 5,076 clicks generated 1,323 phone calls
  • ~94% reduction in wasted PPC spend through keyword refinement and SKAG structure

The most influential factor was consistently the above-the-fold experience, where users decide in seconds whether to act or leave.u.

Conclusion

This case study demonstrates that conversion growth does not require radical redesigns or increased ad spend. It requires disciplined testing, clear user intent alignment, and respect for how people actually behave online.

Through targeted design changes, mobile-first optimization, and performance improvements, we achieved:

  • 14.24% average sitewide conversion rate
  • 26% conversion rate for paid traffic
  • 137% increase in call volume

The takeaway is simple, optimization works best when design decisions are treated as hypotheses, not opinions.

About the author

August 4, 2022
Lubble Team
August 4, 2022
Lubble Digital Marketing is a boutique, Denver-based paid search agency specializing in SEM and SEO for high-intent, service-driven businesses.
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Lubble Digital Marketing is a boutique, Denver-based paid search agency specializing in SEM and SEO for high-intent, service-driven businesses.
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