Service / Ecommerce CRO
Ecommerce CRO, done by the engineers who ship the fix.
You’re losing orders somewhere between add-to-cart and the confirmation page, and your dashboards don’t agree on where. We make the numbers true first. Then we find the defects. Then we test, with no flicker and no guessing. This is conversion work done in code — not a redesign with a mood board.
Symptoms
What a leaking funnel usually looks like.
- Conversion dropped and nobody can name the week it started
- GA4 says one revenue number, the payment gateway says another
- The A/B testing tool flashes the old page before the new one paints
- Phone shoppers abandon checkout far more often than desktop ones
- Coupons fail on some carts and support hears about it before you do
- Changes shipped because they’re “best practice”, with nothing measured either side
What we do
We start in the error log, not the heatmap.
Most conversion work is dead on arrival because the data feeding it is wrong. Consent mode drops events. Redirects strip attribution. The purchase event sits on a thank-you page that some gateways never load. So measurement gets fixed first. Then we go defect hunting: JavaScript errors in checkout, validation that rejects real addresses, a third-party script sitting on top of the payment sheet. Experiments come last, built so the page never flickers and the result survives a second look.
Get the numbers honest
- Reconcile GA4 revenue against the gateway
- Server-side purchase & refund events
- A real number on consent & ad-blocker loss
- One funnel report the whole team believes
Find what’s actually broken
- JavaScript errors caught live in checkout
- Form validation & error messages audited
- Coupon, shipping & tax logic put under test
- Old phones & bad networks, tested for real
Test so the result holds
- Server-side A/B tests with no flicker
- Staged rollouts watched by guardrail metrics
- Speed work on the pages that take money
- Sample-size math before we start, not after
From the field
Mobile conversion sat 40% below desktop for months. The checkout had been redesigned twice already. Neither redesign moved the number.
An address-validation service was timing out on mobile networks. The error it raised rendered off-screen, so shoppers tapped “Continue”, nothing happened, and nothing on the page said why.
We added a timeout fallback so checkout carries on without validation, moved the error message into view, and confirmed the lift with a controlled rollout before calling it fixed.
Questions
Ecommerce CRO questions we get most weeks.
What does ecommerce CRO cost?
It’s part of the Growth plan at $3,900/month, covering measurement, defect fixes and experiment engineering. Smaller, well-defined jobs like an analytics audit or a checkout defect hunt get a fixed quote after a free triage. See plans.
How is this different from hiring a CRO agency?
An agency hands you hypotheses and mockups, then waits on your developers. We are the developers. We fix the tracking, write the code, ship it, and tell you what moved and what didn’t.
Do we have enough traffic to A/B test?
Maybe not, and we’ll say so before you spend anything. Below a few hundred conversions a month per variant, most tests never reach significance in a useful timeframe. Then we skip testing and fix defects we can prove. A broken form doesn’t need an experiment.
What tools do you work with?
GA4 and server-side tagging for measurement. Your current testing tool if it’s sound, or lightweight server-side experiments if it isn’t. The tool is almost never the thing holding you back. Correct data and working code are.
How fast will we see results?
Weeks, not days. A defect fix can show up in the numbers inside one release cycle. Experiments need traffic to pile up before they say anything. Anyone promising a conversion lift in days is reading noise.
Related
Free triage
Tell us where the orders go missing.
Describe the drop: roughly when it started, what you changed around then, which numbers disagree. A senior ecommerce engineer reads it and replies within two hours with a first take. Free, and you’re not obliged to do anything with it.