1,257+
A/B tests shipped
1,257+
A/B tests shipped
Shopify CRO Agency
More revenue from the traffic you already have.
Research, UX, copy, Shopify development, and A/B testing in one senior team. We find the friction, ship the fix, and validate what moved revenue.
+18%
Clean Skin Club revenue
+18%
Clean Skin Club revenue
2019
Building on Shopify since
2019
Building on Shopify since
Shopify brands we've optimized
Full-funnel CRO
Find the friction, fix the right thing
We follow the customer journey from first click to repeat order.
Then we focus on the constraint with the highest commercial value.
Then we focus on the constraint with the highest commercial value.
Illustrative test signals
01
Measure the journey
3.42%
Baseline CVR
Analytics, customer behavior, and feedback establish where the signal is strongest
02
Find the constraint
Offers, PDPs, subscriptions, cart, and checkout are ranked by commercial impact
03
Ship the experiment
50 / 50
Traffic split
UX, copy, Shopify development, instrumentation, and QA turn the hypothesis into a live test
04
Keep what works
+10.2%
Example lift
Winners roll out, every result is documented, and the evidence shapes what comes next
The EXTFOX CRO system
What happens inside a serious CRO programme?
Research, prioritization, UX, Shopify development, testing, and rollout in one continuous loop. Not a backlog of random ideas or an audit deck handed to another team.
01. Diagnose
Find evidence, not inspiration. Analytics, customer behavior, support themes, device performance, and purchase-path QA reveal where revenue is leaking.
02. Prioritize
Rank work by expected business value. Each opportunity is scored against signal strength, reach, implementation cost, and the metric it is meant to move.
03. Build
One pod owns strategy through code. The same senior team handles UX, copy, Shopify development, instrumentation, QA, and launch without handoff drift.
04. Validate
Run against a live control. We monitor the primary outcome and guardrails, document the result, and refuse to call noise a win.
05. Compound
Turn every result into the next advantage. Winners roll out safely. Losers still teach us what customers value. Both sharpen the next hypothesis.
From Dusan
When is CRO actually your next move?
Founder letter · Timing, not method
I get asked for a testing programme by brands who should not be running one yet, and I turn some of them down. Here is the read I use, so you can make it yourself before we ever talk.
CRO pays off when
- 01
Paid traffic is steady and qualified, and the problem is what happens after the click
- 02
You have roughly 8,000 to 10,000 sessions a month on the page you want to test, or more
- 03
Someone owns the number internally, so a result leads to a decision
- 04
The last redesign moved something and nobody can say which part
Hold off when
- 01
Traffic is under a few thousand sessions a month. A test will not reach significance before the season changes
- 02
The offer is the problem. No layout fixes a price nobody wants
- 03
Tracking is broken. If purchase events are unreliable, every result you get is fiction
- 04
You are two weeks from a replatform. Test the new thing, not the one you are deleting
They rebuilt for speed, fixed our subscription flow, and our online revenue is now growing 18%.
Tatiana Turgeon
Marketing Strategist, Clean Skin Club · #1 face towel on Amazon
Engagement
How can we work on your CRO programme together?
Whether you need a focused diagnostic, optimization of an existing storefront, or ongoing experimentation, the shape is scoped after we see the store and its data.
CRO diagnostic sprint
Fixed scope
Who it is for
Stores that know performance is soft but need reliable priorities before committing to a testing programme.
What is included
- Tracking and funnel review
- Storefront, offer, and checkout diagnosis
- Prioritized opportunity map
- Implementation-ready recommendations
How it ends
Know what to fix, why it matters, and what should happen first.
Experimentation retainer
Ongoing
Who it is for
Shopify brands with steady qualified traffic that want a continuous research, build, test, and rollout cycle.
What is included
- Dedicated senior Shopify pod
- Continuous A/B test pipeline
- Design, development, QA, and reporting
- Winner rollout and learning library
How it ends
A CRO system that keeps learning instead of a backlog that keeps growing.
Embedded CRO delivery
Team extension
Who it is for
In-house growth teams with strategy and data, but not enough senior Shopify capacity to ship experiments safely.
What is included
- Weekly delivery capacity
- Technical experiment planning
- Theme, checkout, and integration work
- Release support and rapid fixes
How it ends
Your roadmap reaches production without adding another management layer.
Trusted by the brands you know
Your long-term partner.
10+ years building commerce, SaaS, and AI products. Our clients stay because we deliver, not because they're locked into contracts.
83% still active after 24 months
Measured across retainer and repeat project clients since 2019. No minimum term or lock-in.
Projects and retainers
Fixed-scope projects when you need a clear deliverable. Monthly retainers when you want a dedicated team on call.
Your CRO stack should create evidence, not overhead.
We work with Intelligems, Replo, subscriptions, reviews, search, and personalization tools. We use native Shopify when another app would only add cost, latency, or complexity.
What our customers say
“Next-level communication and skill. They found our site was too confusing, simplified it, added trust, and fixed our conversion rate in a month. We are not burning money on ads anymore.
FAQ
A Shopify CRO agency finds where qualified visitors lose confidence or momentum, then researches, designs, builds, and validates improvements. At EXTFOX, the work can cover measurement, offers, landing pages, product and collection UX, subscriptions, cart, checkout, speed, accessibility, and post-purchase journeys. The goal is not more activity; it is more profitable revenue from the traffic you already have.
It depends on your baseline conversion rate, the size of the change, traffic quality, and how quickly you need a decision. We estimate test feasibility before recommending an experiment. If your store does not have enough signal, we use a research-led diagnostic and implementation sprint instead of pretending an underpowered test is conclusive.
No. Storefront, theme, landing-page, offer, subscription, performance, and analytics work can be done on standard Shopify plans. Shopify Plus becomes relevant when the roadmap needs Plus-only checkout capabilities, B2B, or other enterprise features.
The primary metric is chosen around the commercial question. That may be revenue per session, conversion rate, average order value, subscription take rate, checkout completion, or revenue from a specific journey. We also define guardrails such as margin, refund behavior, performance, and downstream conversion so a local win does not create a larger business loss.
Simple, well-supported improvements can reach production quickly, but a statistically useful result depends on traffic, baseline performance, and effect size. We give you a feasibility view before launch and report uncertainty honestly. We will not manufacture a deadline for significance or call an early trend a win.
Free CRO review
Dusan J., Founder at EXTFOX · Shopify Plus engineering and experimentation for global DTC brands
Bring the store. We'll find the first lever.
Book a focused review of your traffic, conversion challenge, and current Shopify setup. You'll leave with a clearer view of the opportunity and the right next step, even if that is not a retainer.
Prefer to call? (862) 259-6969
Not ready to book?