Choosing a conversion optimization agency: agency, freelancer or in-house?

You choose a conversion optimization agency on its method, not on its promises. A good CRO agency works on data, steers on leads instead of clicks, and is honest about what is and is not possible with low traffic. In this article we compare agency, freelancer and doing it yourself, and you get the questions to ask plus the red flags you need to know.

Tip: benchmark your conversion rate against the B2B average with our free calculator.

Agency, freelancer or in-house?

The first choice is not about who is best, but about what fits your situation. Every option has a genuine advantage and a real limitation.

CRO is a craft that combines research, psychology, technology and analysis. That makes doing it yourself hard without experience. Look into the broader trade-off of whether to outsource your marketing or handle it yourself before you decide.

In-house: only with plenty of capacity

Doing it yourself works if you have a marketer or designer on staff who has both the time and the method knowledge. The pitfall we see most often in practice: someone tweaks buttons and copy on gut feeling, without first looking at where visitors actually drop off. You then change a lot and learn very little. If you do want to start on your own, begin with what conversion optimization actually is and build a structured approach from there.

Freelancer: strong in one area

A freelancer is often sharply priced and personally reachable. The limitation is capacity and breadth: a copywriter does not solve technical measurement problems, and a CRO specialist does not always build the new page. A common mistake is hiring one freelancer and expecting them to cover research, design, development and analysis single-handedly. So ask explicitly what falls outside their scope and who picks that up. Think about continuity too: read up on what to do if your freelancer suddenly becomes unreachable before you become dependent on one person.

Agency: the whole track under one roof

An agency covers the full method: research, hypotheses, execution and measurement. The downside is that you sometimes get an account manager between you and the people doing the work, which slows things down and lets context leak away. Look for the partner that combines the broad approach with direct contact with the people who actually do the work. Also make sure you can make small changes yourself: if you depend on your web developer for every adjustment, every test stalls until someone else has time.

The questions you ask

A good agency gives a clear, well-argued answer to each of these questions. Vague or evasive answers are a signal in themselves.

Do you start with research or straight with changes?

The right answer is: research first. A serious partner wants to know where and why visitors drop off before anything changes. That means combining analytics data, session recordings and customer conversations, as we describe in our approach to conversion research. Anyone who immediately talks about a redesign is guessing.

In practice that means working in a fixed cycle instead of isolated gut-feel interventions:

Do you steer on leads or on clicks?

The conversation has to be about qualified leads and pipeline, not about clicks or bounce rates. In practice we steer on leads, because a higher click rate that produces zero enquiries is worthless. Ask how they define a conversion and whether that ties back to revenue.

How do you handle low traffic?

Crucial in B2B. An honest agency acknowledges that you cannot always A/B test reliably and has a plan for that situation, see also A/B testing with low traffic. Anyone who promises that every change can be neatly tested does not know the reality of B2B traffic.

Do you do B2B or mainly webshops?

B2B CRO is a different craft from webshop optimization: longer sales cycles, multiple decision makers, less traffic and no direct checkout. An agency that mainly does e-commerce brings reflexes that do not work on a B2B site. Read why in conversion optimization for B2B.

Can you show cases and results?

Ask for concrete cases with real conversion growth, not for screenshots of dashboards without context. Good cases name the starting point, what was changed and what effect that had on leads. Our case for Get Driven is one of those: a new website and branding that grew conversion by 400%.

How do you measure and report?

Ask how they measure and whether the measurement setup is sound. Many reports rest on quicksand because the tracking is broken. A good agency checks the basics first, for example with a CRO audit of your B2B website, and then reports on leads in plain language instead of jargon.

Who actually does the work?

Ask who works on your project day to day. In pitches you often see the seniors, but execution sometimes goes to juniors with no experience in your market. That does not have to be a problem, as long as it is transparent and there is experienced oversight.

Checklist: good answer versus red flag

Use this table during an intake conversation. For each question you see what a strong answer sounds like and what to watch out for.

Red flags

Beyond the table there are recurring signals that should make you doubt right away.

They start with a redesign without research

A new design feels decisive, but without research it is gambling with your money. You then do not know what was broken, so you also do not know whether the new version is better.

They promise a fixed percentage of extra conversion

“We will raise your conversion by 30%” sounds reassuring, but nobody can guarantee that upfront. The result depends on your starting point, your traffic and your market. An honest partner promises a method, not a number.

They steer only on clicks and traffic

More traffic or a lower bounce without extra leads is a vanity number. Anyone steering on that optimizes for the dashboard and not for your business.

They use webshop tricks on a B2B site

Scarcity timers, “only 2 left in stock” and endless button-colour testing belong to e-commerce, not to a B2B site where a purchase takes weeks and multiple people decide.

They act as if you can always A/B test

With low traffic, an A/B test often delivers false certainty. Anyone who denies this is selling you a method that does not work at your volume.

Watch out for the testing trap at low traffic

This is the most important, and most forgotten, question in B2B. Many agencies promise A/B tests, but most B2B sites have too little traffic to make a test reliable, something you can check yourself with a significance calculator from VWO. Google also advises only trusting experiments once they are statistically sound, and warns more broadly in Search Central against chasing tricks over content that genuinely helps the user. An honest agency then works with research, customer conversations and larger, well-argued changes, not with false certainty from unreliable tests.

Common mistakes when choosing

• Choosing on price alone. The cheapest option is expensive if nothing changes in your leads. Weigh price against approach, and look at the cost of conversion optimization upfront.
• Choosing on a slick pitch. A smooth presentation says nothing about the method. Test the approach, not the feeling.
• No owner on your side. Without someone internally who supplies data and makes decisions, every track stalls. Even the best agency needs your input.
• Sorting out measurement afterwards. If the tracking is wrong, every report is unreliable. Set up measurement before the first change.

• Expecting it to go fast. Serious CRO works in cycles of research, changing and measuring. Anyone promising results within a week is skipping steps.

From the right choice to more customers

The right agency ties conversion to your leads, not to vanity numbers. Feel free to start with our guide on outsourcing conversion optimization for the broader trade-off.

Frequently asked questions

What does a CRO agency cost?

That varies a lot by scope and by partner, so hedge every quote you get. More important than the rate is what you get back: research and well-argued changes, or just loose tips. We worked through the trade-offs in conversion optimization cost.

Agency or freelancer for CRO?

A freelancer fits a well-defined problem and a tight budget. An agency fits when you need the whole method, from research to execution and measurement, and continuity matters. Choose based on the breadth of your question, not on price alone.

How do I quickly spot a weak CRO agency?

By three things: they start without research, they guarantee a fixed percentage, and they steer on clicks instead of leads. If you see any one of those three, push further with the questions from this article.

Ready to choose?

Feel free to ask us all of these questions. We answer honestly, even when we are not the right match.

We are a small team, so we move fast and do more than you expect. Schedule your free intake and within 24 hours you will hear where your opportunities are.