How do I run a Shopify Plus CRO audit?

Treat the audit as a search for the highest-leverage opportunities, not a checklist. The order matters — quantitative first, qualitative second, opinion last.

How do I improve Shopify Plus checkout conversion?

Reduce friction in the contact, shipping, and payment steps; remove unnecessary fields; pre-fill where possible; surface trust signals (returns, support, secure-checkout badges) at the right step; and use Checkout Extensibility for measured, scoped customisation.

How do I run an A/B test on Shopify Plus?

Pick one variable, write a hypothesis with a target metric, calculate the required sample size, run the test until significance with a holdout, then ship or kill based on the result — never both at once, never without sample sizing.

How do I hit good Core Web Vitals on a Shopify Plus theme?

Set image and font budgets, defer non-critical JS, lazy-load below-the-fold media, audit third-party apps that inject scripts, and monitor real-user metrics in production.

How quickly will I see CRO results?

Speed and broken-flow fixes ship in weeks and show up immediately. Statistically-significant A/B tests typically need 2–4 weeks of traffic depending on baseline conversion.

Do you bring your own testing platform?

We work with Convert, VWO, Optimizely, and Shopify-native experimentation. Choice depends on your existing stack and team workflow.

Do you also implement the changes you recommend?

Yes. CRO and engineering live in the same team at Mejix — we don't hand off recommendations to someone else.

How is success measured?

Per-experiment metric movement plus a quarterly cumulative impact report. We focus on revenue per session, not vanity click-through rates.

How long is a typical CRO engagement?

Most engagements run on a quarterly cadence — audit, ship, learn, repeat — with a 12-month horizon for compounding results.

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Service · CRO

Shopify Plus Conversion Rate Optimization

Get more revenue out of the traffic you already pay for — through research, speed, funnel work, and a disciplined experimentation program on Shopify Plus.

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Glowing upward growth curve over a soft grid representing conversion rate optimization

What it is

About this Shopify Plus service

Conversion rate optimisation (CRO) is the disciplined work of turning more of your existing traffic into revenue. On Shopify Plus, that's a mix of qualitative research (session replay, customer interviews, support log mining), quantitative analysis (funnel breakdowns in GA4 and Shopify reports), and a structured experimentation program that ships changes only when they earn their place.

Mejix runs CRO as engineering, not opinions. Every recommendation is tied to a measurable hypothesis with a defined success metric. We obsess over the unglamorous side of conversion — page speed and Core Web Vitals, broken cross-sell logic, hidden friction in the cart and checkout, and trust signals that aren't doing their job — because that's where most of the lift hides.

Typical engagements combine an initial diagnostic audit with an ongoing program of testing, theme refinements, and Checkout Extensibility tweaks. The output isn't a slide deck — it's measurable revenue lift, validated against a holdout, with the experiment log to prove it.

What's included

Concrete deliverables

Every engagement ships a defined scope. No vague promises — these are the artifacts and outcomes you can expect.

Diagnostic audit

Quantitative funnel breakdown plus qualitative session-replay analysis to surface the highest-leverage opportunities first.

Performance & Core Web Vitals

Image, font, and third-party script audits; LCP, INP, and CLS work; real-user metric monitoring.

Funnel & UX refinements

PDP, cart, and checkout improvements grounded in real customer behaviour, not opinion.

A/B testing program

Hypothesis library, prioritisation matrix, and a tested A/B framework (Convert, VWO, Shopify-native) with proper sample sizing.

Personalisation

Segment-based experiences for VIPs, returning customers, B2B accounts, and traffic source — without page-speed cost.

Reporting & decision log

Monthly performance reports and an experiment log so leadership sees the cumulative impact, not just last week's win.

How it works

A predictable delivery process

The same sequence we run on every engagement, refined across enterprise Shopify Plus projects.

01

Diagnostic & opportunity map

Two weeks of audit, session replay, and analytics work that produces a ranked list of opportunities and a baseline.
02

Quick wins & speed work

Ship the no-test-required improvements first — performance, broken flows, obvious friction.
03

Structured experimentation

Hypothesis-driven A/B tests with proper sample sizing, holdouts, and a written decision per result.
04

Quarterly review & roadmap

Cumulative impact review, refreshed roadmap, and a recalibrated hypothesis library every quarter.

Why Mejix

A certified Plus Tier partner

We don't sell what we haven't shipped. Every credential below is verifiable on the Shopify Partner Directory.

Engineering-led CRO

We ship the changes ourselves — no hand-off gap between recommendation and implementation.

Real Plus performance work

Restored Core Web Vitals on a 50,000-SKU Plus storefront post-migration.

Plus Tier partner

Checkout Extensibility, B2B, and Markets are in our toolkit — not just theme tweaks.

How To

How to: Shopify Plus Conversion Rate Optimization

Practical answers to the most common 'how do I…' questions teams ask before starting.

Frequently Asked Questions

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Related services & resources

Useful next stops — sibling services on this site and verified pages on mejix.com.