Best CRO Agencies (2026) – Ranked by Case Studies
- ~50% average lift in conversions across all three tests
- +23% increase in lead form conversions (Test 1)
- +40% increase in lead form conversions (Test 2)
- +15% increase in booking transactions
- $1.75M increase in gross revenue
- +70% increase in PPC conversion rates for free trial signups
- +125% increase in full time memberships
- 1.7X More Efficient Cost Per Acquisition
- 1.3X Captured Total Revenue
- 200% Better at Stopping the Scroll (Single-Product Visuals)
- 3X more landing page views than ever before
- 10K new email signups
- 1K+ uses of hashtag across social channels
- 15K+ engagements across social media channels
- 54% increase in organic search traffic
- 94% increase in revenue via on-site optimization
- 61% increase in organic search transactions
- 20% reduction in checkout abandonment
- 30% increase in engagement
- 40% website traffic growth
- 50% faster page load speed
- Gas strut form submissions +130.65% in 6 months (558 to 1,287)
- Form conversion rate +126.12%
- Form abandonment -35.59%
- Heatmap analysis led to a horizontal product filter redesign
- Page form submissions +186% (14 to 40)
- On-page conversion rate +175% (1.64% to 4.51%)
- Overall website leads +127%
- Sheet-selection tool feeds the RFQ form while keeping SEO value
- Total website traffic +215% within 11 months
- Online reservations +197%
- Paid search brought 4,858 online reservations and organic 1,703
- Purchasing additional lot space due to demand
- Drum Search Awards finalist: Best Use of Data
- 300% ROI
- 64% increase in applications
- 3X leads
- $130K donation goal exceeded
- 112 conversions
- 10% conversion rate
- 2,000% increase in organic mobile visits
- 500% increase in keywords ranking 1st on SERPs
- Award-winning website
- Test version sales grew from 20 to 42
- 100% boost in conversions
- 11% increase in conversion
- 26% decrease in cost per conversion
- 18% reduction in ad spend
- 3,000% increase in leads in month 1
- 98% decrease in cost per lead
- 50% landing page conversion rate
- Leads tripled in the first 3 months
- 42% reduction in paid advertising costs for the same result
- 136% increase in total conversions from all sources
- 300% ROAS on Meta campaigns, up from 170%
- +45% increase in average order value
- 3x increase in sitewide conversion rate
- Demo requests up 200%
- Organic traffic doubled (2x)
- Online revenue up 127%
- Organic traffic up 14x
- Social traffic up 216%
- Organic traffic up 120%
- New users up 80%
- 30+ new clients
- £5.9M additional revenue
- +15% callback form conversion rate
- £393 returned for every £1 spent
- GA4 migration with a GDPR-compliant consent platform
- A/B tests lifted online donation and Gift Aid revenue
- 30 immediate conversion quick wins, plus 56 high and 40 medium priority recommendations
- Umbraco microsites managed by the marketing team
- 4,200% increase in total leads
- 446% increase in total traffic
- 400% increase in lead conversion rate
- 148% increase in move-ins from internet sources
- One agency marketing multiple communities
- Landing page converting at 42%
- Industry-changing reports earned an award
- Amazon revenue grew from $40K to $180K per month
- Started from a 45% ACoS and fragmented campaigns
- 106% organic revenue growth in 6 months
- 50% increase in top-3 keyword rankings
- 55.7K backlinks acquired
- $367K conversion value added
- $31.8M in tracked revenue at 5.39x blended ROAS
- $5.92M ad spend managed over 56 months
- 6.80x Google Ads lifetime ROAS
- 13.4x blended ROAS in best week
- Organic pipeline about 2x the Q1 target and +43% year over year
- AI brand mentions +73% in four months
- Junk and spam lead share down nearly three-quarters
- Mid-market and enterprise lead share +35%
- Qualified demo bookings grew from 20 to 745
- Cost per lead cut from $357 to $106
- PPC conversion rate rose from 44% to 52%
- Comparison landing pages converting at 2.5%
- 1,347% increase in monthly organic traffic
- 534% increase in SEO-attributed revenue
- 766% increase in organic conversion rate
- 61% increase in average order value
- 298% increase in organic revenue (to $926k+)
- 253% increase in total orders
- 147% increase in organic traffic
- 31% relative lift in conversion rate
- 12.9% increase in order completion rate
- 19.5% increase in revenue per visitor
- conversion rate increased from 1.53% to 1.93%
- $63,000 estimated additional monthly revenue
- 30% increase in conversion rate
- 34.5% increase in revenue per visitor
- $30,000 estimated additional monthly revenue
- 1,086 Total Leads
- $72.37 Cost Per Lead
- 4.86% Conversion Rate
- 28% Increase in Landing Page Conversions from A/B Testing
- 67% Increase in Time on Site
- 16% Increase in Monthly Users
- 123% Increase in Scheduler Engagement
- 30% Increase in Total Website Sessions
- 73.6% Increase in Total Event Count
- 396 Keywords
- 66.7% Increase in Keywords in Top
- 47.1% Increase in New SERP Featured Snippets Gained
- 358.2% Increase in Revenue
- 45.5% Increase in Total Conversions
- 158.3% Increase in Transaction Volume
- 741.7% Increase in Conversion Rate
- 322.6% Increase in Google Ads Revenue
- Aggressive A/B testing and audience segmentation
- Conversion rate optimization with Google Ads
- Remarketing, programmatic and analytics
- Ecommerce sales grown in a competitive market
- Google Ads, display and remarketing
- Conversion rate optimization and testing
- GA4 and GTM tracking set up with cross-domain tracking across the Centre and Foundation sites
- 12 Foundation subdomains consolidated into one GTM container with revenue reporting
- Raisely and Grassrootz donation platforms integrated into GA4
- Migrated CRM from Marketo to HubSpot
- GA4 and GTM event tracking, with AVANSER and Calendly integrations
- Marketing team can now report to executives and the board
- 120% increase in high-value leads
- 33% decrease in cost per acquisition
- 35% increase in paid traffic acquisition
- 62.7% increase in conversion rates
- 81% revenue growth
- 7.85 ROAS on paid media campaigns
- 54% increase in membership sign-ups
- 732% Increase in Website Conversions
- 2,361+ Google Positions Gained
- $3.5M in Influenced Opportunities
- Product sales +215%
- Units ordered +190%
- Total orders +178%
- Average sales per order +13%
- Amazon store traffic +27%
- User engagement +23%
- Bounce rate -15%
- Mobile conversions +17%
- 25.18% YoY Increase in New Users
- 172.92% Increase in Leads/Conversions
- 33% YoY Increase in Leads
- 34% YoY Increase in Converted Leads
- 30% more appointments from website speed optimization
- 70% increase in total traffic
- 25% decrease in bounce rate
- 54% more pages viewed per visit
- Website restructured to improve lead quality and sales
- Conversion rate up from 19.11% to 25.96% in one month
- ACoS reduced from 30.52% to 16.71%
- Sales up 5.17%
- 25x return on investment
- $94K+ in additional monthly revenue, about $1.1M a year
- Conversion rate up 4.23%
- Revenue per session up $0.66
- 126% increase in new leads within six months of the new website launch
- 55% improvement in website sessions
- 63% increase in active users and 61% increase in new users
- 30% increase in organic sessions
- 89% increase in conversions
- 759% increase in impressions
- 213% increase in new customers
- 11K new monthly website visitors
- 960 new first-page keyword rankings (up from 19)
- 1,979 keywords ranking in total
- 195 keywords in the top 3 positions
- 80% increase in enquiries
- 23% Increase in YoY Organic Traffic
- 24% Increase in Form Fill Conversion Rates
- 65% Increase in YoY Total Conversions
- +7.42% form submissions (video test)
- +14.81% phone clicks (video test)
- +9.41% form submissions (nav test)
- +45.18% phone clicks (nav test)
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