Shopify CRO Agency Built for Ecommerce Conversion Growth

A Shopify CRO (Conversion Rate Optimization) agency helps improve the percentage of your website visitors who complete a desired action, typically a purchase. At Charle, we use a data-led process to identify barriers across your customer journey — from poor navigation to friction at checkout. Our team runs audits, analyzes user behavior, develops a testing roadmap, and implements changes across design, UX, and development. Unlike generalist agencies, we're tailored to the unique behavior of ecommerce users on Shopify and Shopify Plus, ensuring the improvements we deliver align with platform best practices and drive measurable outcomes.

CRO delivers incremental gains across your key performance indicators. These typically include increases in conversion rate, average order value (AOV), customer lifetime value (LTV), and reductions in bounce rate or cart abandonment. Most brands begin seeing meaningful improvements within 4 to 8 weeks. We focus on sustainable growth, not short-term fixes — which means testing, learning, and continually evolving your site to improve how users engage and convert.

Our CRO services are delivered through our SiteLab model, which provides continuous access to our ecommerce team on a monthly retainer. Pricing depends on the scope of work, testing volume, and level of support you need. We'll discuss your goals and recommend the right plan during an initial consultation. Get in touch to learn more about our pricing structure.

A/B testing is one tool within CRO, but CRO is much broader. Conversion rate optimization encompasses the full process of auditing, researching, hypothesising, testing, and iterating on your store's performance. A/B testing is how we validate specific changes. CRO also includes UX analysis, heatmap reviews, checkout optimization, content strategy, and ongoing performance monitoring — all working together to improve how your store converts visitors into customers.

A/B testing becomes most effective with 10,000+ monthly sessions, which gives us enough data to reach statistical significance within a reasonable timeframe. If your traffic is lower, we can still run CRO initiatives based on user insights, heatmaps, customer feedback and session recordings. Not every improvement needs statistical testing to be valuable — we'll tailor our approach to your store's data set.

Many brands begin to see positive changes in performance within 4 to 8 weeks. This includes early wins from quick fixes as well as insights gathered through user research and testing. Long-term impact comes from continuous experimentation, where we test, refine and scale what works. With regular reporting and a clear roadmap, you'll always know what's being worked on and how it's contributing to growth.

For statistically significant A/B test results, we generally recommend at least 10,000 monthly sessions to the pages being tested. With higher traffic, tests reach significance faster and we can run more experiments simultaneously. However, if your store has lower traffic, we adjust our approach — prioritising high-impact UX improvements, qualitative research, and heatmap-driven changes that don't require split testing to validate. Every brand's CRO programme is tailored to their data reality.

We optimize across the full customer journey: homepage, collection pages, product detail pages (PDPs), cart and cart drawers, checkout, post-purchase flows, landing pages, and navigation. Our audits identify which pages have the highest drop-off rates and the greatest conversion potential. From there, we build a prioritized testing roadmap so we're always working on the changes most likely to move revenue. We also look at cross-device behavior, ensuring mobile and desktop experiences are both optimized.

CRO consistently delivers one of the highest ROIs of any ecommerce investment because it compounds across all your traffic sources. A 0.5% increase in conversion rate on a store doing £500k/month in revenue can equate to an additional £150k–200k annually — without increasing ad spend. Our clients typically see a 3–8x return on their CRO investment within the first six months. We track and report on incremental revenue attributed to each test, so you always know the commercial impact of the programme.