10 Best eCommerce/Shopify CRO Agencies in 2026: Results & Expertise

Choosing the best eCommerce CRO agency requires more than comparing client logos or headline conversion uplifts. The right partner should understand your eCommerce platform, have documented A/B testing results, and know how to improve business metrics such as conversion rate, revenue per visitor, and average order value.

We compared 10 leading eCommerce CRO agencies based on published case studies, experimentation methods, team capabilities, client feedback, and eCommerce specialization.

This guide helps you compare full-service CRO agencies, Shopify-focused specialists, and DTC growth marketing teams to find the right partner for your online store.

Best eCommerce CRO Agencies at a Glance

The agencies below differ in their platform expertise, experimentation capabilities, and business focus. Some specialize in Shopify and DTC brands, while others support complex, enterprise-level eCommerce experimentation programs.

How to use this comparison: Start with your conversion challenges and platform requirements. An agency with strong Shopify development capabilities may be ideal for one business, while an experimentation consultancy with enterprise analytics expertise may be more relevant for another.

How We Evaluated eCommerce CRO Agencies

We evaluated each agency across five weighted criteria, prioritizing documented eCommerce results, experimentation expertise, and relevant platform capabilities.

Scoring Method

Each criterion is rated from 0 to 5. The weighted score is multiplied by 20 to calculate the final rating out of 100.

Total Score = 20 × (0.25 CS + 0.25 PR + 0.15 TC + 0.20 SP + 0.15 VS)

Case Studies measures the strength of published CRO evidence, while eCommerce Specialization assesses its relevance to online stores and purchasing journeys.

Scoring Transparency & Editorial Disclosure

Conversion Rate Store is included in this comparison and evaluated using the same five weighted criteria as other agencies. Final scores are calculated without manual adjustments, and agencies are ranked by their total scores. Tied agencies share the same rank.

Ratings are based on publicly documented capabilities, case studies, methodologies, and client evidence reviewed in October 2026. Agency-reported results are considered self-reported unless independently verified.

Top 10 eCommerce CRO Agencies: Ranking & Scores

1. Conversion Rate Store

Best For: eCommerce brands seeking a fully outsourced CRO team to improve conversions and revenue through research-driven experimentation.

Relevant Platforms: Shopify, general eCommerce, and marketplaces.

Main CRO Focus: Full-funnel CRO, product pages, cart, subscriptions, mobile UX, and revenue optimization.

Overview

Conversion Rate Store is an award-winning CRO agency offering a dedicated team of specialists covering analytics, customer research, UX/UI design, experimentation strategy, development, and QA.

Its approach focuses on identifying conversion barriers through research, prioritizing hypotheses, and validating improvements with controlled A/B testing.

The agency publishes detailed eCommerce CRO case studies and marketplace experiments documenting actual changes and measurable results.

Proven eCommerce CRO Results

• Mariemur — +29% purchase conversion rate. Research revealed sizing-related hesitation among lingerie shoppers. Clearer return-policy messaging near checkout helped reduce purchase uncertainty.
• NATPAT — +23% conversion rate and +28% revenue per user. Customer research informed personalized content that helped shoppers understand which wellness patches matched their needs.

Pros

• Extensive library of published eCommerce and marketplace CRO experiments.
• Fully outsourced team covering the complete experimentation process.
• Focus on measurable conversion and revenue outcomes.

Considerations

• Best suited to stores with sufficient traffic and conversion volume for ongoing experimentation.
• More comprehensive than a one-time theme redesign or UX audit.

2. Conversion

Best For: Enterprise eCommerce businesses seeking advanced experimentation and support for existing optimization programs.

Relevant Platforms: Platform-agnostic eCommerce environments.

Main CRO Focus: Advanced experimentation, purchasing journeys, UX research, and enterprise testing.

Conversion is an experimentation consultancy supporting businesses through customer research, analytics, UX optimization, and A/B testing.

Its experience is particularly relevant to large retailers managing complex websites, high traffic volumes, and established internal experimentation teams.

Proven eCommerce CRO Results

Clarks — +2.6% conversion rate and an estimated £2.8 million in additional annual revenue.

Conversion tested more prominent delivery information after identifying that customers were often unaware of available shipping benefits.

The agency reported a 2.6% conversion uplift from its first experiment, translating the result into an estimated annual revenue impact.

Pros

• Documented enterprise eCommerce experiments.
• Strong research and experimentation methodology.
• Cross-functional team covering strategy, research, analytics, design, development, and QA.

Considerations

• Enterprise-oriented engagement model.
• Implementation may require close coordination with internal technical teams.

3. Craftberry

Best For: Shopify and Shopify Plus brands seeking revenue-focused CRO backed by a performance guarantee.

Relevant Platforms: Shopify and Shopify Plus.

Main CRO Focus: Full-funnel Shopify CRO, product pages, cart optimization, A/B testing, and revenue per visitor.

Overview

Craftberry is a Shopify-focused CRO agency combining customer research, experimentation, UX/UI design, and development.

The agency manages the entire optimization process in-house and uses its proprietary AI research tool, SignalVeritas, to identify conversion barriers and prioritize testing opportunities.

Craftberry aims to deliver at least 4x its clients' CRO investment in additional revenue. Its performance guarantee typically targets a minimum 10% revenue-per-visitor uplift within 90 days of the first test, subject to agreed conditions.

Proven eCommerce CRO Results

• Enhance Automotive — +21.01% conversion rate and +21.63% revenue per visitor. An A/B test repositioned customer reviews and social proof to improve purchase confidence.
• Moon Nude — +23.4% revenue per visitor and +14.3% conversion rate. An experiment improved the visibility of customer ratings and reviews on bestselling product pages.
• Shelly — +11% conversion rate and +8% revenue per visitor. Adding "Most Popular" and "Best Value" labels helped shoppers choose between product bundles.

Pros

• Published Shopify A/B tests with measurable conversion and revenue improvements.
• Full-service in-house team supported by proprietary AI research technology.
• Revenue-focused experimentation with a conditional performance guarantee.

Considerations

• Primarily focused on Shopify and Shopify Plus rather than other eCommerce platforms.
• Ongoing A/B testing is best suited to established brands with sufficient traffic and order volume.

4. SplitBase

Best For: Established DTC brands seeking research-led conversion optimization and improvements in revenue per visitor.

Relevant Platforms: Shopify and DTC eCommerce.

Main CRO Focus: Product pages, bundles, landing pages, offers, and full-funnel experimentation.

Overview

SplitBase specializes in eCommerce CRO for DTC brands, combining customer research, buying psychology, and experimentation.

Its programs focus on identifying purchasing barriers and improving shopping experiences without relying solely on discounts or generic CRO tactics.

Proven eCommerce CRO Results

Dr. Squatch — +54% revenue per user for soap purchasers and more than $800,000 in additional monthly revenue.

SplitBase optimized product selection, bundles, and other parts of the shopping experience.

The agency's work included experiments designed to improve product quantity selection and purchasing behavior. The reported revenue results reflect the broader optimization program.

Pros

• Strong DTC and eCommerce specialization.
• Published research-backed purchasing experiments.
• Experience with high-traffic consumer brands.

Considerations

• Primarily focused on DTC businesses.
• Ongoing experimentation is more suitable for established stores with adequate traffic.

5. Speero

Best For: Established eCommerce businesses seeking deeper customer research and more mature experimentation programs.

Relevant Platforms: Platform-agnostic eCommerce environments.

Main CRO Focus: Customer research, cart UX, experimentation strategy, and analytics.

Overview

Speero is a research and experimentation consultancy helping businesses develop structured CRO programs.

Its approach combines behavioral research, customer insights, analytics, and controlled testing to identify and validate optimization opportunities.

Proven eCommerce CRO Results

RevZilla — +6.01% mobile conversion rate and an estimated $2 million in additional annual revenue.

Research revealed that shoppers needed clearer confirmation of their cart contents before progressing to checkout.

Speero recommended making product summary information more accessible in the cart journey. The resulting test improved mobile conversion by 6.01%, with an estimated annualized revenue impact of $2 million.

Pros

• Strong research-led experimentation methodology.
• Relevant mobile eCommerce testing evidence.
• Experience improving experimentation processes and decision-making.

Considerations

• Particularly suited to businesses with ongoing experimentation needs.
• Development and implementation responsibilities should be confirmed.

6. Blend Commerce

Best For: Shopify and Shopify Plus brands seeking CRO expertise combined with technical development.

Relevant Platforms: Shopify and Shopify Plus.

Main CRO Focus: Product discovery, PDP, cart, theme development, and A/B testing.

Overview

Blend Commerce combines Shopify development with conversion optimization, helping merchants research, test, implement, and refine storefront improvements.

Its work is especially relevant to brands with complex product catalogs, technical purchasing requirements, or Shopify-specific development needs.

Proven eCommerce CRO Results

PerTronix — +52% conversion rate and +54% revenue per visitor over 12 months.

Following a Shopify Plus migration, Blend Commerce ran a structured optimization program involving product discovery, vehicle fitment guidance, trust signals, and A/B testing.

The program also generated a reported 11% increase in average order value and 74% growth in revenue.

These results reflect cumulative improvements from a broader program, not one isolated experiment.

Pros

• Strong Shopify and Shopify Plus specialization.
• Combines development with CRO.
• Documented eCommerce experimentation results.

Considerations

• Shopify-focused rather than platform-agnostic.
• Broader program outcomes should be distinguished from individual A/B tests.

7. The Good

Best For: eCommerce businesses seeking research-led digital experience optimization.

Relevant Platforms: General eCommerce; platform-specific development support should be confirmed.

Main CRO Focus: Customer research, mobile UX, full-funnel optimization, and experimentation.

Overview

The Good specializes in digital experience optimization using customer research, behavioral analysis, and structured testing.

Its approach focuses on understanding customer needs, reducing purchasing friction, and developing improvements based on actual user behavior.

Proven eCommerce CRO Results

Swiss Gear — +14.1% year-over-year conversion rate, +20.1% average order value, and +132.7% online revenue.

The program included customer research, segmentation, mobile UX improvements, product-page testing, and ongoing experimentation.

The reported headline metrics describe broader year-over-year performance rather than the effect of one isolated A/B test.

Pros

• Research-first optimization methodology.
• Experience with established eCommerce retailers.
• Focus on customer journeys and usability.

Considerations

• Platform-specific development capabilities require confirmation.
• Engagement scope and pricing depend on business requirements.

8. GrowthHit

Best For: DTC brands seeking CRO alongside paid acquisition and lifecycle marketing.

Relevant Platforms: Shopify and DTC eCommerce.

Main CRO Focus: Full-funnel growth, product pages, landing pages, acquisition, and retention.

Overview

GrowthHit combines conversion rate optimization with paid advertising, email marketing, and broader growth services.

Its positioning is relevant to businesses seeking coordinated improvements across customer acquisition, storefront conversion, and retention.

Proven eCommerce CRO Results

BiotiQuest — +27% conversion rate, +42% average order value, and +22% email-attributed revenue.

GrowthHit ran a broader growth program for the supplement brand, including Shopify CRO, homepage and product page optimization, Meta advertising, and email marketing.

These outcomes reflect multiple improvements and marketing channels rather than one isolated A/B test.

Pros

• Relevant Shopify and DTC experience.
• Connects CRO with acquisition and retention.
• Published conversion and revenue-related results.

Considerations

• Broader growth marketing scope than a CRO-only agency.
• Reported program outcomes may include effects from several marketing channels.

9. Convertibles

Best For: Shopify brands seeking ongoing A/B testing and direct implementation of winning experiments.

Relevant Platforms: Shopify and Shopify Plus.

Main CRO Focus: Product pages, cart drawers, offers, merchandising, and experimentation.

Overview

Convertibles is a Shopify-focused optimization provider offering research, A/B testing, design, and technical implementation.

Its published experimentation examples cover product presentation, cart experiences, shipping offers, and other purchasing decisions.

Proven eCommerce CRO Results

Cart Drawer vs. Add-to-Cart Banner — +16% conversion rate and +18% revenue per visitor.

In a test for a high-ticket equipment store, Convertibles compared an add-to-cart notification with a full cart drawer.

The results demonstrated how changing the shopping-cart experience can affect both conversion and revenue outcomes.

The client was anonymized, so the result provides less independently attributable evidence than a named-client case study.

Pros

• Strong Shopify-specific experimentation focus.
• Detailed examples of winning and losing tests.
• Design and development capabilities for experiment implementation.

Considerations

• Primarily relevant to Shopify businesses.
• Several public case studies use anonymized clients.

10. Conversion Fanatics

Best For: eCommerce businesses seeking structured A/B testing and continuous conversion optimization.

Relevant Platforms: General eCommerce; confirm platform-specific implementation support.

Main CRO Focus: Product messaging, purchasing friction, offers, and experimentation.

Overview

Conversion Fanatics is a conversion optimization consultancy focused on research-backed experimentation.

Its approach combines behavioral analysis, customer feedback, hypothesis development, and controlled testing to improve purchasing experiences.

Proven eCommerce CRO Results

Online Grooming Store — up to +53% completed orders and +37% revenue per visitor on mobile.

Customer research showed that shoppers struggled to choose between product scents.

The agency tested two different ways of clarifying the choices. The winning mobile variation increased completed orders by 53% and revenue per visitor by 37%.

A different variation performed best on desktop, improving completed orders by 11% and revenue per visitor by 24%.

Pros

• Strong focus on controlled experimentation.
• Published device-specific testing results.
• Experience addressing customer decision-making friction.

Considerations

• Some detailed public experiments are older.
• Platform integration and implementation responsibilities should be confirmed.

eCommerce CRO Agency vs. Shopify Development Agency vs. DTC Growth Marketing Agency

An eCommerce CRO agency, Shopify development agency, and DTC growth marketing agency may all help online stores grow, but they have different primary responsibilities.

Understanding these differences helps businesses choose a provider based on their actual needs.

Which Type of Agency Should You Hire?

Choose an eCommerce CRO agency when your store generates traffic but needs to improve product page conversion, cart performance, checkout completion, or revenue per visitor.

Choose a Shopify development agency when your priority is theme customization, integrations, migrations, or implementing new storefront functionality.

Choose a DTC growth marketing agency when your primary goal is expanding paid acquisition, lifecycle marketing, or customer retention.

Some agencies offer overlapping services. When comparing them, ask for documented experimentation results rather than relying only on design portfolios, development projects, or campaign performance.

How to Choose an eCommerce CRO Agency for Your Platform

Different eCommerce platforms have different technical requirements, checkout capabilities, integrations, and experimentation constraints.

A strong CRO partner should understand both customer behavior and the technical environment in which experiments are implemented.

Shopify CRO Agencies: What Matters Most?

For Shopify brands, platform expertise is important because CRO experiments may involve themes, product variants, subscription apps, cart functionality, and checkout restrictions.

Shopify Plus provides additional checkout customization capabilities, but not every checkout experiment is available on standard Shopify plans.

When evaluating Shopify CRO agencies, ask which experiments they can build, how they handle app compatibility, and who implements winning changes.

What About Magento, WooCommerce, and Custom Platforms?

For more complex eCommerce environments, technical implementation can be as important as experimentation strategy.

Look for experience with your platform's storefront architecture, checkout system, analytics, and third-party integrations.

Do not assume that a successful Shopify experiment can be implemented identically on Magento, Drupal, OpenCart, WooCommerce, or a headless storefront.

eCommerce CRO Agencies for Luxury, Beauty, Fashion & Wellness Brands

1. Luxury eCommerce CRO Agencies

Luxury eCommerce CRO requires balancing conversion performance with premium brand positioning, exclusivity, and perceived value.

An experienced luxury eCommerce CRO agency should understand how to optimize product storytelling, visual presentation, trust signals, pricing communication, and shipping and returns information without undermining the brand experience.

Relevant case study: Mariemur - Luxury Lingerie. Clearer return-policy messaging addressed sizing concerns and increased purchase conversion by 29%.

2. Beauty eCommerce CRO Agencies

A beauty eCommerce CRO agency should focus on helping customers choose the right products and make confident purchasing decisions.

Key optimization opportunities include product education, ingredient transparency, reviews, skin-type or shade selection, product comparisons, bundles, and subscription offers.

For beauty and skincare brands, agencies should demonstrate experience with product discovery, purchase uncertainty, and repeat-purchase behavior.

3. Fashion & Jewelry eCommerce CRO Agencies

Fashion and jewelry CRO focuses on product presentation, sizing, customization, materials, trust, and mobile shopping experiences.

A specialized eCommerce CRO agency should be able to test product variants, mobile purchase controls, personalized recommendations, and cart cross-sells.

Relevant case studies:

• Moonmagic - Mobile Product Page Optimization: Sticky customization controls increased conversion rate by 7%, average order value by 11%, and revenue per user by 7%.
• Moonmagic - Cart Cross-Sell Optimization: Personalized product recommendations increased revenue per user by 9%.

4. Wellness & Fitness eCommerce CRO Agencies

Wellness and fitness brands often need to explain product benefits, address customer concerns, and encourage repeat purchases.

An experienced wellness eCommerce CRO agency should understand product education, subscription optimization, bundles, customer reassurance, and cart abandonment.

Relevant case studies:

• NATPAT - Kids' Wellness Patches: Personalized product messaging increased conversion rate by 23% and revenue per user by 28%.
• SomniFix - Sleep Wellness Products: Homepage optimization improved mobile conversion rate by 23% and revenue per user by 32%.
• Gaiam - Yoga & Fitness Products: Exit-intent messaging increased conversion rate by 13%.

Which eCommerce Metrics Should Your CRO Agency Improve?

A successful eCommerce CRO program should measure more than conversion rate alone.

For example, an aggressive discount may increase purchases while reducing profitability. A subscription offer may change the balance between initial revenue and long-term customer value.

The most appropriate KPIs depend on your business model and experiment objectives.

Which KPIs Should You Prioritize?

Agencies should define the primary metric, measurement window, calculation method, and relevant guardrail metrics before launching experiments.

eCommerce CRO Case Studies: Real A/B Testing Results

When comparing eCommerce CRO agencies, documented experiments provide stronger evidence than generic lists of capabilities.

Conversion Rate Store has published experiments across luxury lingerie, jewelry, wellness, and fitness eCommerce stores, covering product pages, cart experiences, subscriptions, and purchasing journeys.

These experiments demonstrate how industry-specific customer research, UX improvements, and A/B testing can improve conversion rates and revenue.

You can explore additional eCommerce CRO case studies and marketplace experiments.

What to Ask Before Hiring an eCommerce CRO Agency

Before signing a contract, ask potential agencies how they conduct research, validate experiments, and measure business results.

The answers should help you distinguish a structured experimentation program from a service focused primarily on redesigning pages.

Red Flags When Comparing CRO Agencies

Be cautious when an agency:

• Promises a specific conversion uplift without understanding your store, baseline, or traffic.
• Presents landing page redesigns as proven conversion improvements without experiment data.
• Reports only clicks or add-to-cart rates while ignoring purchases, revenue, or profit.
• Cannot explain how tests are randomized, measured, and validated.
• Lacks the technical resources or platform knowledge needed to implement experiments.

An agency should be able to explain both successful and unsuccessful tests and how those findings influence future decisions.

When Should You Hire an eCommerce CRO Agency?

An external CRO team can be valuable when your store already generates meaningful traffic but struggles to turn visitors into customers efficiently.

Common signs include underperforming product pages, high cart abandonment, lower mobile conversion, weak subscription adoption, or rising acquisition costs without corresponding revenue growth.

An agency can also help when internal teams lack dedicated resources for customer research, UX design, experiment development, QA, and statistical analysis.

For a broader overview of engagement models and costs, read our CRO pricing guide.

Conclusion

The best eCommerce CRO agency depends on your platform, business model, customer journey, and experimentation requirements.

When comparing providers, prioritize documented A/B testing results, relevant eCommerce experience, reliable research methods, and the ability to improve meaningful revenue metrics.

Conversion Rate Store combines analytics, customer research, UX/UI design, experiment development, QA, and statistical analysis. Our published eCommerce and marketplace case studies demonstrate measurable results across product pages, cart experiences, subscriptions, and purchasing journeys.

Looking to improve eCommerce conversions and revenue? Explore our eCommerce CRO services or book a strategy session with our team.

Frequently Asked Questions

Which Are the Best eCommerce CRO Agencies for Shopify Brands?

The best choice depends on whether you need full-funnel CRO, Shopify development, or a combination of both.

Conversion Rate Store, Сraftberry, SplitBase, Blend Commerce, and Convertibles are relevant options to compare based on their published eCommerce work and Shopify-focused capabilities.

Review their case studies, implementation scope, and experience with your specific Shopify plan before making a decision.

How Much Traffic Do You Need for eCommerce A/B Testing?

There is no universal traffic threshold. Required sample size depends on baseline conversion rate, minimum detectable effect, statistical power, and experiment design.

Stores with limited traffic may benefit more from analytics, customer research, usability testing, and carefully prioritized changes until reliable A/B testing becomes feasible.