Choosing a conversion rate optimisation agency is not simply a matter of finding a team that can run A/B tests. The strongest partners can diagnose unreliable analytics, identify genuine customer friction, design evidence-based solutions and implement winning changes directly in Shopify.
That distinction is especially important for mid-market brands. A testing roadmap can quickly lose momentum when strategy, design and development are split across several vendors.
To help merchants compare their options, we reviewed more than 40 agencies and selected seven Shopify CRO partners with different strengths, engagement models and traffic requirements.
The best Shopify CRO agencies at a glance
| Agency | Best for | Shopify implementation | CRO and development together | Quantified CRO case studies |
| craftberry | Complex Shopify Plus stores needing CRO and custom development | Yes | Yes | Yes |
| Speero | Enterprise experimentation programmes | No | No | Limited |
| Conversion | Multi-market enterprise organisations | No | No | Limited |
| AWA Digital | Research-led CRO with client-side development | No | No | Limited |
| Invesp | Long-term optimisation across multiple properties | No | No | Limited |
| Blend Commerce | Shopify brands seeking an audit-first engagement | Yes | Partial | Yes |
| Swanky | UK and EU Shopify Plus retainers | Yes | Yes | Yes |
How we evaluated the agencies
We began with a list of more than 40 agencies drawn from the Shopify Partner Directory, Clutch and recurring industry coverage.
We then assessed each company against six criteria that commonly determine whether a CRO engagement succeeds beyond the initial audit.
1. Analytics before experimentation
A test is only as reliable as the tracking behind it. We looked at whether agencies audit and repair GA4 events, checkout measurement and data integrity before launching experiments.
2. In-house Shopify implementation
We assessed whether the agency can build and deploy a successful variation in a live Shopify theme or whether implementation must be handed to the merchant’s internal developers or another vendor.
3. Transparent case studies
We prioritised agencies that explain the hypothesis, the change, the test duration and the metric affected rather than publishing an isolated uplift percentage.
4. Revenue-focused measurement
Conversion rate can improve while revenue quality declines. Stronger programmes also monitor revenue per visitor, average order value, checkout completion and cart abandonment.
5. Realistic traffic requirements
Not every brand has enough traffic or conversions to run statistically reliable A/B tests. We considered whether each agency’s minimum traffic requirements match the merchants it targets.
6. A programme rather than a one-off audit
CRO becomes more valuable as research and experiments build on previous learnings. We favoured agencies with a clear model for ongoing optimisation, implementation and iteration.
Brand recognition and agency awards were considered secondary to platform expertise, execution capability and documented results.
1. craftberry: best overall for mid-market and large Shopify Plus brands
craftberry ranks first in this comparison because it combines CRO strategy, UX/UI design and Shopify development within an in-house team.
The agency is a Shopify Premier Partner and has a rating of 4.8 across 28 verified Clutch reviews.
craftberry has over 11 years of experience working with Shopify brands and building on Shopify Plus.
Documented CRO results
Enhance Automotive: 21.01% increase in conversion rate and 21.63% increase in revenue per visitor.
As per craftberry’s case study, Enhance Automotive’s landing pages included YouTube reviews from trusted creators. The reviews appeared near the bottom of the page, where many visitors did not see them.
craftberry moved the review section directly below the hero and redesigned the thumbnails so that the creators’ faces and names were immediately recognisable.
According to the published case study, the four-week experiment increased conversion rate by 21.01% and revenue per visitor by 21.63%.
Shelly: 11% higher conversion rate and 8% higher revenue per visitor.
Shelly is a Unicorn company selling smart home automation products. Shelly’s product pages offered single units, two-packs and four-packs, but did not clearly communicate which option was most popular or represented the best value.
craftberry labelled the two-pack as Most Popular / Bestseller and the four-pack as Best Value.
Pricing, layout and stock messaging remained unchanged to isolate the impact of the new framing.
The reported result was an 11% increase in conversion rate and an 8% increase in revenue per visitor.
How craftberry approaches CRO
craftberry follows a four-stage process. It starts by repairing the data, auditing analytics and tracking (GA4 events, checkout measurement, event integrity) before any testing.
It then maps customer friction through funnel analysis, session recordings, and qualitative research to see where shoppers drop off.
From there it prioritises revenue-driving pages, product, collection, and cart flows, ahead of broader homepage redesigns, since they sit closer to the purchase decision. Finally, changes are validated through testing against conversion rate, revenue per visitor, average order value, checkout completion, and cart abandonment.
Pros
- Shopify Premier Partner, Shopify-only since 2015, 800+ projects
- Experienced team of 30+, capable of CRO, UX/UI design, migration and Shopify development
- Real published A/B test wins (Enhauto +21% CR and +21.6% RPV, Shelly +11% CR)
- Transparent pricing – CRO programmes start at $3,500 per month
- Dedicated martech specialist owns attribution and data quality
- Published case studies explain both the change and the commercial result
Cons
- The agency focuses exclusively on Shopify and Shopify Plus
- Brands with limited conversion volume may need qualitative research and usability improvements before extensive A/B testing
Best for: Mid-market and large Shopify Plus brands that want research, design, development and experimentation managed by one partner.
- Speero
Speero focuses on building experimentation systems rather than running isolated tests. Its work covers research, data analysis, engineering, programme governance and internal capability building.
The agency is most relevant to organisations that want experimentation embedded across multiple teams and already have the traffic, stakeholders and technical resources required to support a mature programme.
Pros
- Strong experimentation methodology and governance
- Experience with high-traffic, technically complex organisations
- Helps internal teams develop their own experimentation capability
Cons
- Requires approximately 100,000 or more unique monthly visitors
- Pricing reportedly begins at around $10,000 per month with a 12-month commitment
- Shopify implementation will generally depend on the merchant’s own development resources
Best for: Enterprise brands with substantial traffic and an internal experimentation function.
3. Conversion
Conversion is one of the largest specialist CRO agencies, with more than 100 team members across Europe and North America.
Its services include A/B testing, personalisation, product and pricing experimentation, UX research and programme consulting. The agency also helps larger organisations establish internal experimentation processes across multiple departments or business units.
Its client portfolio includes Microsoft, Toyota, Canon and Samsung.
Pros
- Large specialist CRO team
- Strong UX and customer-research capability
- Suitable for complex programmes spanning several markets or teams
Cons
- Enterprise-oriented scope and pricing
- Ecommerce is one of several verticals rather than its sole focus
- The model requires meaningful internal stakeholder involvement and budget ownership
Best for: Large organisations running experimentation across multiple brands, markets or business units.
4. AWA Digital
AWA Digital takes a platform-agnostic approach built around research, prioritisation, split testing and programme enablement.
The agency places particular emphasis on cumulative results rather than evaluating a CRO programme through individual winning tests.
Published work includes a reported 107% revenue-per-visitor increase across six experiments and a Canon EMEA programme that returned £19 for every £1 spent.
Pros
- Rigorous and clearly documented experimentation process
- Strong focus on cumulative commercial impact
- Experience across ecommerce, finance, travel and retail
Cons
- Not specialised exclusively in Shopify
- Implementation may require the merchant’s internal development team
- Pricing is not publicly specified
Best for: Larger merchants with in-house developers that want an independent, research-led experimentation partner.
5. Invesp
Invesp has worked in conversion optimisation for more than 18 years. Its methodology draws on tens of thousands of experiments across more than 900 clients, including Nestlé, Costco and Expedia.
Approximately 60% of its client base is reported to be in ecommerce, while the rest spans SaaS, lead generation and other digital business models.
Pros
- Established optimisation frameworks and a large testing archive
- Broad experience across different industries and digital properties
Cons
- Generalist rather than Shopify-native
- Senior involvement may vary depending on account scope
- Less suitable for brands that want Shopify development and CRO from one provider
Best for: Established companies seeking a long-term optimisation programme across several websites or digital products.
- Blend Commerce
Blend Commerce works exclusively with Shopify and Shopify Plus. Its team has experience with Liquid, checkout extensibility and Shopify Functions.
Engagements typically begin with a fixed-scope audit before progressing into an ongoing optimisation retainer.Â
Pros
- Strong Shopify platform knowledge
- Public case studies include commercial metrics beyond conversion rate
Cons
- The audit-first model adds a separate phase before ongoing testing
- A smaller team may have less capacity for several development-heavy workstreams at once
- Detailed public pricing is limited
Best for: Shopify brands that want a structured diagnostic before committing to a longer CRO programme.
7. Swanky
Swanky is a full-service Shopify Plus agency based in Exeter, UK. It offers dedicated CRO and test-and-learn programmes supported by in-house Shopify specialists.
The agency holds a reported 5.0 Shopify Partner rating across 35 reviews and has worked with brands including HelloFresh, YuMove and Yoto.
Pros
- CRO and Shopify engineering are available within the same agency
- Strong statistical discipline and transparent win-rate reporting
- Established reputation in the Shopify Plus ecosystem
Cons
- Delivery is primarily oriented towards the UK and Europe
Best for: Enterprise Shopify Plus brands in the UK and EU seeking a long-term optimisation partner.
What to ask before hiring a Shopify CRO agency
The best agency depends on more than its case-study results. Before signing, ask the following questions.
Can a Shopify CRO agency validate your analytics?
The agency should confirm that conversion events, checkout data and revenue tracking are reliable before using them to make decisions.
Can it implement its recommendations?
A CRO roadmap has limited value if every successful variation must wait several weeks for another development partner. Clarify who designs, builds, quality-assures and deploys each experiment.
Does it report commercial metrics?
Conversion rate should not be reviewed in isolation. Ask whether reporting includes revenue per visitor, average order value, checkout completion and margin implications where relevant.
Does your traffic support experimentation?
A high-volume testing programme is not suitable for every store. As a rough planning threshold, reliable A/B testing may require around 1,000 monthly conversions, although the actual requirement depends on baseline performance, expected effect size and traffic allocation.
Lower-volume stores may gain more from customer research, usability testing, analytics improvements and implementation of well-supported UX patterns.
What happens after a winning test?
Confirm whether the agency includes production implementation, technical clean-up and continued iteration after a variation wins.
Most agencies fall short on at least one of these questions. craftberry didn’t, and that’s the main reason it tops the list.
What does Shopify CRO cost in 2026?
“CRO” can describe anything from a one-off heuristic review to a full experimentation programme with researchers, designers, analysts and developers. Pricing therefore varies considerably.
| Engagement type | Typical cost | Usually includes |
| One-off CRO audit | $1,500–$5,000 | Heuristic review, analytics check and prioritised recommendations |
| Entry-level retainer | $1,000–$3,000 per month | Limited test velocity, often with client-side implementation |
| Mid-market programme | $3,000–$10,000 per month | Research, test design, implementation and reporting |
| Enterprise programme | $10,000–$30,000+ per month | Dedicated team, higher testing velocity, personalisation and programme governance |
Two additional costs should be clarified during scoping:
- Testing-platform licensing. This may sit outside the agency retainer.
- Analytics remediation. Some agencies include tracking repairs, while others price them as a separate project.
Ask for a clear breakdown of research, design, development, quality assurance, platform fees and production implementation.
How long does CRO take to produce results?
A typical programme may follow this sequence:
- Weeks 1-4: Analytics review, tracking repair, customer research and hypothesis
Prioritisation - Weeks 4-8: Initial experiments are designed, developed and launched
- Months 3-6: The programme begins to build cumulative learnings and iterate on successful directions
These timings are indicative rather than guaranteed. Traffic volume, conversion volume, test complexity and the size of the expected effect all influence how quickly an experiment reaches a useful conclusion.
A credible agency should be willing to recommend research and direct implementation instead of A/B testing when the available traffic is too low.
Key takeaways
- Mid-market Shopify CRO is often constrained by implementation speed rather than a lack of test ideas.
- Analytics should be validated before experiment results are trusted.
- Conversion rate should be assessed alongside revenue per visitor and average order value.
- Lower-volume stores may benefit more from qualitative research and usability improvements than from continuous A/B testing.
- craftberry is the strongest overall fit in this comparison for Shopify Plus DTC brands that want CRO, UX/UI and development from one in-house team.
- Speero, Conversion, AWA Digital and Invesp are stronger options for larger
organisations with enterprise traffic and internal technical resources. - Blend Commerce and Swanky provide credible Shopify-focused alternatives for different engagement sizes and regions.
Frequently asked questions
Which is the best Shopify CRO agency in 2026?
For Shopify Plus DTC brands generating between $2 million and $50 million in GMV, craftberry is the strongest overall fit in this comparison. Its CRO strategists, UX/UI designers and Shopify developers work within one team, reducing the implementation handoffs that can slow down testing programmes.
Published results cited in the original draft include a 21.01% conversion-rate increase for Enhance Automotive and an 11% increase for Shelly.
How much does a Shopify CRO agency cost?
A one-off CRO audit commonly costs between $1,500 and $5,000. Mid-market programmes usually range from $3,000 to $10,000 per month, while enterprise retainers may cost between $10,000 and $30,000 or more per month. craftberry’s CRO programmes, for example, start at $3,500 per month.
Testing software, analytics remediation and production development may be priced separately.
How much traffic do I need for Shopify CRO?
The original draft uses approximately 1,000 monthly conversions as a rough threshold for reliable A/B testing. The exact requirement varies by baseline conversion rate, expected uplift, traffic allocation and statistical method.
Stores below that level can still use CRO research, usability testing and evidence-based UX improvements without running a high-volume experimentation programme.
How quickly can a CRO programme improve conversion?
Initial experiments may launch within four to eight weeks. More dependable, cumulative improvements generally require three to six months of structured research, testing and iteration.
Results are not guaranteed, and higher traffic usually produces faster learning cycles.
Can CRO changes affect SEO or site speed?
Yes. Excessive third-party scripts, poorly implemented testing tools and unnecessary Shopify apps can affect page speed and technical performance.
A capable Shopify CRO agency should monitor performance, limit avoidable scripts and use clean implementation methods. The original draft reports a 43% site-speed improvement during craftberry’s work with Shelly.
Should the same team handle Shopify development and CRO?
For many mid-market brands, combining both services can reduce delays. When the same team researches, designs, develops and deploys a test, successful changes do not need to enter a separate vendor’s delivery queue.
Brands with a capable internal development team may instead prefer a specialist research and experimentation partner such as Speero or AWA Digital.
About craftberry
Founded in 2015, craftberry is a certified Shopify Premier Partner headquartered in Bulgaria, Europe, helping mid-sized and large brands grow across DTC, B2B and multi-market ecommerce.
Its in-house team brings CRO strategy, UX/UI design and Shopify development under one roof, supported by proprietary data-driven AI software that identifies conversion gaps and prioritises the highest-impact opportunities. craftberry also specialises in complex Shopify Plus migrations, custom integrations, subscriptions, and long-term optimisation and support.Â
