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Conversion

Conversion Rate Optimization Services

Conversion rate optimization services that build and ship the winning variant

Most CRO agencies hand you a slide deck of test ideas and leave the build to your dev team. We research, build, test, and ship the winner ourselves — with proper statistical rigor, not gut calls.

  • We build & ship variants — not just recommendations
  • Minimum sample size discipline on every test, no early calls
  • CRO wired into paid media & SEO so wins compound
  • Pay-on-results pricing available
Conversion service illustration in brand blue and green

Conversion in numbers

+27%

Avg conversion lift

3.2×

Avg experiment ROI

95%+

Statistical confidence

Since 2018

Running CRO programs

About Conversion

The agency literally named after the metric

Founded 2018

CRO since day one

Shopify Plus Partner

Since 2019

We Build the Variant

Not just recommend it

San Francisco, USA

In-house team

Conversion is a growth agency headquartered in San Francisco, founded in 2018 by Tarun Kapoor, and a Shopify Plus Partner since 2019. Conversion rate optimization isn't a line item we bolt onto other services — it's the namesake discipline the entire agency was built around, running programs for DTC ecommerce and healthcare brands across the US, Canada, UK, and Australia.

What separates us from the CRO industry's usual output — a PDF of 'test ideas' — is that our engineers build every variant and ship it directly into your codebase and testing platform. Research, statistics, design, and development sit in one team, so a winning test doesn't stall waiting on a dev queue that has other priorities. It goes live, it gets measured properly, and once it wins, it stays.

Why most CRO engagements stall

A test roadmap isn't a conversion lift

We've taken over CRO programs from large agencies and in-house teams dozens of times. The same three failure patterns show up almost every time.

Recommendations, not results

Most CRO 'agencies' deliver a slide deck of prioritized test ideas and leave implementation to your already-stretched dev team. Nothing ships for months, if ever. We build and ship the variant ourselves — the test goes live in your funnel, not in a backlog.

Tests called on gut feeling

Experiments get called "winners" after three days and a good feeling, with no minimum sample size and no significance threshold. That's how false positives get shipped sitewide. We calculate required sample size and duration before a test launches and never call it early.

CRO living in a UX vacuum

Optimization sits disconnected from paid media and SEO — a winning homepage headline never makes it onto the ad landing pages or organic templates it should. We run CRO integrated with your paid and SEO teams so validated wins compound across every channel, not just one page.

Tired of CRO decks that nobody ever builds?

Book a free 30-minute strategy call. We'll audit your current funnel and show you exactly which tests we'd build and ship first.

30-minute call · No commitment · Custom quote in 48 hours

Conversion rate optimization services

Every layer of the CRO stack, researched, built, and tested

Full-service conversion rate optimization — from qualitative research through statistically rigorous experimentation to production-shipped winners. We work inside GrowthBook, Optimizely, VWO, and your existing analytics stack.

A/B Testing & Multivariate Experimentation

Hypothesis-driven split and multivariate tests built and shipped by our engineers, run to a pre-calculated sample size and significance threshold — never called early on a hunch.

  • Power analysis + sample size calculated before launch
  • A/B, A/B/n, and multivariate test design
  • Server-side + client-side test implementation
  • Full test log: hypothesis, result, and why

UX Research

Session recordings, heatmaps, scroll maps, and structured user interviews that surface real friction points — the qualitative signal every good test hypothesis is built on.

  • Session replay + heatmap analysis (Hotjar, Clarity, FullStory)
  • Moderated user interviews + usability testing
  • On-site surveys + exit-intent research
  • Friction point mapping by device and segment

Funnel & Checkout Audits

A page-by-page, step-by-step teardown of where visitors drop off between landing and purchase — with a prioritized, effort-scored list of what to fix or test first.

  • Funnel drop-off analysis by device + traffic source
  • Checkout step-by-step abandonment breakdown
  • Form and field-level friction analysis
  • Prioritized hypothesis backlog (impact × confidence × effort)

Landing Page Optimization

Paid and organic landing pages engineered and tested for message match, load speed, and conversion — so acquisition spend and organic rankings both convert at a higher rate.

  • Message-match testing vs ad creative and search intent
  • Layout, copy, and CTA experimentation
  • Core Web Vitals + mobile-first performance
  • Dynamic landing pages by traffic source or segment

Personalization & Segment-Based Experiences

Onsite experiences tailored by traffic source, geography, returning-vs-new visitor status, or customer segment — validated with the same testing rigor as any other experiment.

  • New vs returning visitor experiences
  • Geo, source, and campaign-based personalization
  • Segment-specific merchandising and offers
  • Personalization measured against a control, always

Ecommerce Checkout Optimization

Cart and checkout-specific work aimed at the highest-leverage step in the funnel — one-page checkout flows, payment method mix, shipping and tax transparency, and abandonment recovery.

  • Cart abandonment diagnosis + recovery flows
  • One-page vs multi-step checkout testing
  • Payment method mix (BNPL, wallets, local methods)
  • Shipping cost + tax transparency testing

Experimentation Program Setup

Platform selection, implementation, and QA for GrowthBook, Optimizely, or VWO — plus the analytics and statistics scaffolding to run a real testing program instead of ad hoc changes.

  • Platform selection + implementation (GrowthBook, Optimizely, VWO)
  • Feature flagging + server-side variant assignment
  • Analytics + event tracking QA for clean test data
  • Statistical significance dashboard + reporting cadence

Our CRO process

From audit to shipped winner in 2–3 weeks per cycle

Conversion's four-stage growth process visualized in brand blue and green
01

Research & audit

Funnel analysis, session recordings, heatmaps, and checkout drop-off diagnosis. Every friction point gets documented with supporting evidence — not opinion.

02

Hypothesize & prioritize

Every finding becomes a scored hypothesis (impact × confidence × effort). Required sample size and test duration are calculated up front, before anything gets built.

03

Build & test

Our engineers build the variant directly in your testing platform and codebase. Tests run to the pre-calculated significance threshold — never called early.

04

Ship & compound

Winners get merged into production and pushed to paid landing pages and SEO templates where relevant, so the lift compounds across channels instead of living on one page.

How we compare

Conversion vs the other options on your shortlist

A side-by-side look at what you actually get from an in-house team, a large CRO agency, and Conversion.

FeatureIn-House TeamLarge AgencyConversion
Builds & ships the winning variantCompetes with product roadmapRecommendations only✓
Minimum sample size discipline, no early callsInconsistentInconsistent✓
Dedicated CRO specialists on staff—✓✓
Integrated with paid media & SEO teamsSiloed by department—✓
Session recording + heatmap researchAd hoc✓✓
Experimentation platform setup (GrowthBook/VWO/Optimizely)Varies✓✓
Dev resources to implement fastCompetes for sprint capacity—✓
Written test log (hypothesis, result, why)RareSometimes✓
Minimum contract lengthN/A — salaried6–12 monthsMonth-to-month
Pay-on-results pricing option——✓
Typical cost$90K–$140K/yr salary$15K–$40K/mo$4K–$30K/mo or pay-on-results
Time to first live test4–8 weeks (hiring/onboarding)6–10 weeks2–3 weeks

CRO case studies

Real tests. Real revenue.

Shopify Plus — DTC Skincare Brand

+47%

Checkout conversion

One-page checkout rebuild lifted conversion 47% in a single quarter

“They didn't hand us a deck of ideas — they rebuilt the checkout flow themselves, tested it against our old one to a real sample size, and shipped it once it won. We'd never had a CRO partner actually build anything before.”

B2B Industrial Supplier

2.1×

Quote-request volume

Funnel audit doubled qualified quote requests in 90 days

“Our previous agency gave us a 40-page PDF and nothing else. Conversion found the actual drop-off points in our RFQ funnel, built the fix, and tested it properly before we rolled it out sitewide.”

Outdoor Gear DTC Brand

−34%

Cart abandonment

Payment method testing cut cart abandonment by a third

“We assumed our checkout was fine because it looked modern. Session recordings showed exactly where people bailed, and the payment-method test they ran proved it beyond a doubt. No guessing involved.”

See what a statistically proven test would do for your funnel

Talk to a CRO strategist about your traffic, baseline conversion rate, and where the biggest drop-off is happening. Fixed-scope quote in 48 hours.

30-minute call · No commitment · Custom quote in 48 hours

What clients say

Trusted by DTC and B2B growth teams

Every other CRO pitch we heard was a slide deck. Conversion showed up with a hypothesis, built the variant themselves, and ran it to a real sample size before calling it. That discipline alone justified the engagement.

Rachel B.

VP Ecommerce · DTC Skincare Brand

We'd been burned by a large agency that called tests after four days because the number 'looked good.' Conversion's team wouldn't budge on significance thresholds even when we were impatient. They were right to hold the line.

Omar S.

Director of Growth · B2B Industrial Supplier

The checkout test they built lifted conversion nearly 50%. What impressed me more was that it was engineers on their team who built it — not a recommendation we had to hand to our own dev queue for six months.

Priya N.

Head of Digital · Health & Supplement Brand

They wired our winning landing page test straight into our paid media templates within the same sprint. Our previous CRO vendor never talked to our media buyers at all — the wins just sat on one page.

Derek M.

Growth Marketing Lead · Outdoor & Sports DTC Brand

Low traffic made us assume A/B testing was off the table. Conversion ran session recordings and interviews first, fixed obvious friction, and only introduced formal testing once we had the volume. Honest, not a sales pitch.

Lena F.

Founder · Early-Stage DTC Brand

Setting up GrowthBook properly was worth it on its own — feature flags, server-side assignment, clean event tracking. We'd been running 'tests' for a year on broken analytics without knowing it.

Chris T.

Head of Ecommerce · Home & Lifestyle Brand

Why Conversion

We're not a slide deck. We're the team that builds it.

We build what we test

Our engineers implement every variant directly in your testing platform and codebase. Nothing waits on your internal dev backlog — the test goes live in your funnel, and the winner ships into production the same way.

Statistical rigor, non-negotiable

Minimum sample size and significance thresholds are calculated before a test launches. We don't call a test early because it 'feels' like a winner after three days — that's how false positives get shipped sitewide.

CRO wired into paid media and SEO

A win doesn't stay stuck on one page. Validated tests get pushed into ad landing pages, organic templates, and lifecycle flows in the same sprint, so the lift compounds across every channel you run.

Shopify Plus Partner since 2019

Deep, verified experience testing inside theme architecture and checkout extensibility constraints most CRO agencies have never touched — we know what's actually testable on Plus versus what breaks the build.

In-house US team — no subcontracting

Researchers, statisticians, designers, and engineers work in one room from our San Francisco HQ. Fewer handoffs between the person who found the insight and the person who ships the fix.

Pay on results, for qualifying accounts

We offer a pricing structure where fees scale with incremental revenue rather than a flat retainer for accounts that qualify. The incentive is aligned with your P&L, not with hours billed.

What you walk away with

A compounding experimentation asset, not just a test result

Every Conversion CRO engagement ships with these artifacts in your hands — yours to keep, reference, and build on.

Everything included in a Conversion engagement, laid out as tangible deliverables

Research

  • Funnel + checkout audit deck
  • Session recording + heatmap findings
  • User interview transcripts + themes
  • Friction point map by device + segment

Strategy

  • Prioritized hypothesis backlog
  • Sample size + duration calculations
  • Quarterly testing roadmap
  • KPI scorecard + benchmark

Build & Test

  • Shipped, production-ready variants
  • GrowthBook / Optimizely / VWO setup
  • Server-side feature flagging
  • Clean event tracking + QA

Reporting

  • Full test log — hypothesis, result, why
  • Statistical significance reports
  • Cross-channel rollout notes
  • Monthly performance readout

Ready for CRO that actually ships?

One call. One audit. A prioritized test roadmap with sample sizes calculated up front — and our engineers ready to build the first variant.

30-minute call · No commitment · Custom quote in 48 hours

Frequently asked

Conversion rate optimization questions

What is conversion rate optimization (CRO)?
Conversion rate optimization is the structured process of increasing the percentage of site visitors who complete a desired action — purchase, signup, quote request — through research, hypothesis-driven A/B testing, and iterative design changes. Done properly, CRO isn't guesswork: it's session recordings, heatmaps, funnel analytics, and user interviews feeding a prioritized backlog of experiments, each run to statistical significance before a winner ships. It's the discipline of proving what actually moves revenue instead of assuming it.
How much do conversion rate optimization services cost?
A standalone CRO audit — funnel analysis, heatmaps, session recordings, and a prioritized test roadmap — typically runs $3,000–$8,000 as a one-time engagement. Ongoing CRO programs, where we design, build, and ship tests every sprint, run $4,000–$12,000/month for a single-funnel Shopify or DTC brand, and $12,000–$30,000+/month for multi-market or enterprise catalogs running several concurrent experiments. We also offer a pay-on-results structure for qualifying accounts, where fees scale with incremental revenue rather than a flat retainer. You get a fixed-scope quote within 48 hours of a discovery call.
What sample size do we need before we can call a test?
It depends on your baseline conversion rate, current traffic, and the minimum detectable effect you care about — not a fixed number. As a rough planning benchmark, detecting a 10–15% relative lift on a 2–3% baseline conversion rate typically needs 1,000–3,000 conversions per variant. We calculate the exact required sample size and test duration before every experiment launches, and we don't call a test — win, lose, or flat — until that threshold and a minimum two full business cycles (to control for day-of-week effects) have both been hit.
How long does a CRO program take to show results?
Most engagements ship the first live test within 2–3 weeks of kickoff — research, hypothesis, design, and build. A single test typically needs 2–6 weeks to reach significance depending on your traffic. Expect the first statistically significant win inside 60–90 days, and a compounding pattern of lift from month four onward as the backlog of validated wins builds. Programs on lower-traffic sites take longer per test but still land a research-backed roadmap and qualitative wins (UX fixes, checkout friction removal) well before the first quantitative test concludes.
Do we need a minimum amount of traffic to run tests?
For classic A/B testing to reach significance in a reasonable timeframe, we generally want at least 5,000–10,000 monthly sessions into the funnel being tested. Below that, split-testing individual page variants gets slow and noisy. It doesn't mean CRO is off the table — for lower-traffic stores we front-load qualitative research (session recordings, heatmaps, on-site surveys, user interviews), fix high-confidence UX and checkout friction points directly, and layer in A/B testing on your highest-traffic pages (usually the homepage or best-selling PDP) once volume supports it.
CRO vs UX redesign — what's the difference?
A UX redesign is a one-time, opinion-led overhaul of how a site looks and flows — new design system, new layout, shipped all at once, validated after the fact (if at all). CRO is an ongoing, evidence-led process: every change starts as a hypothesis, ships as a controlled experiment against a subset of traffic, and only becomes permanent once it beats the original with statistical confidence. We use UX research as an input to CRO, but we don't ship unvalidated redesigns wholesale — a full-site redesign that looks better can just as easily convert worse, and without a test you'd never know.
What's the difference between this and your Shopify Development Agency service?
Our Shopify Development Agency service builds new stores, custom themes, headless Hydrogen storefronts, and net-new features from scratch — it's for when you need architecture that doesn't exist yet. This CRO service is for optimizing the conversion rate of a store you already have, through research, A/B testing, and checkout and funnel refinement, without a ground-up rebuild. In practice they connect: when a CRO test wins, our development team ships it into your production codebase permanently — you're not stuck waiting on a separate dev queue to implement what we prove works.
Do you actually build the test variants, or just hand us recommendations?
We build and ship the variant ourselves. Most CRO 'agencies' deliver a slide deck of test ideas and leave implementation to your internal dev team — which is where most CRO programs quietly die, six months into a backlog nobody has time to build. Our engineers implement every test directly in your testing platform and, once it wins, merge it into production. You get a shipped, working experience, not a prioritized wishlist.
What tools do you use for testing and research?
For experimentation: GrowthBook, Optimizely, and VWO, chosen based on your stack, budget, and whether you need open-source flexibility or a managed enterprise platform. For research: Hotjar, Microsoft Clarity, and FullStory for session recordings and heatmaps; Google Analytics 4 and server-side tracking for funnel data; and structured user interviews and on-site surveys for qualitative signal. On Shopify specifically, we integrate testing at the edge or via theme app extensions so tests don't degrade Core Web Vitals or flicker on load.
What does a typical CRO engagement include?
A full program includes: a funnel and checkout audit, session recording and heatmap analysis, a prioritized hypothesis backlog scored by expected impact and build effort, experimentation platform setup or audit, ongoing A/B and multivariate test design and build, statistical analysis and reporting each sprint, and a quarterly roadmap review. You get a written test log documenting every experiment run, its result, and why — a compounding asset, not a one-off project.
How do you decide what to test first?
We score every hypothesis on expected impact, confidence (backed by research signal, not opinion), and build effort — a standard ICE/PIE-style framework — then sequence the backlog to bank quick, high-confidence wins early while bigger structural tests (checkout flow, pricing presentation, navigation architecture) get properly scoped. Checkout and funnel drop-off points usually get first priority since they sit closest to revenue and tend to have the clearest research signal.
Will CRO work if we're an early-stage store with low traffic?
Yes, but the mix of work shifts. Early on we lean heavily on qualitative research — session recordings, on-site surveys, checkout drop-off analysis, and direct customer interviews — to find and fix obvious friction without waiting on statistical significance. As traffic and conversion volume grow, we introduce formal A/B testing on your highest-traffic pages first, then expand the testing surface as volume allows. We'll tell you honestly on the first call whether your traffic supports formal split testing yet.
Do you only work with Shopify stores, or other platforms too?
Most of our CRO work is on Shopify and Shopify Plus, where we've been a Partner since 2019 and have deep experience with theme-level and checkout-extensibility testing constraints. We also run CRO programs for brands on WooCommerce, BigCommerce, and custom/headless storefronts, along with lead-gen and healthcare sites where the 'conversion' is a form fill or booking rather than a purchase. The research and testing methodology is platform-agnostic; the implementation details are not, and we scope those specifically for your stack.
How does the pay-on-results model work for CRO?
For qualifying accounts — generally stores with enough baseline traffic and revenue to make the math work — we structure fees as a percentage of incremental revenue generated by winning tests, measured against a pre-agreed baseline, rather than a flat monthly retainer. It aligns our incentive directly with your P&L: we only get paid when the experimentation program actually grows revenue. We'll walk you through whether your traffic and margin profile qualify on the first call.

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Paid traffic acquisition engineered to feed directly into your CRO program.

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Shopify Development Agency

When a test wins, we ship it into production — custom Shopify development that turns CRO findings into permanent gains.

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Growth Marketing Agency

Full-funnel growth that treats conversion rate as one lever among many, not the whole strategy.

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Ready to test?

Get conversion rate optimization services that actually ship

Book a free 30-minute strategy call. We'll audit your funnel, show you the highest-confidence tests to run first, and tell you honestly what a proper CRO program would lift over the next 90 days.

No credit card · No commitment · Pay only on results