CRO
conversion rate optimizationConversion rate optimisation, CRO, means systematic work to get a larger share of current visitors to take the desired action. Same traffic, more sales: that is why CRO is often the cheapest way to grow revenue.
Good to know
CRO’s mathematics is irresistible: lifting conversion rate improves every channel’s return at once, because an acquired visitor turns into a sale more often. Before raising the ad budget, check whether the path leaks, because traffic bought into a leaking funnel drains away.
Optimisation is a process, not a trick: data locates the leak (heatmaps, analytics, recordings), a hypothesis proposes the fix, an A/B test proves it. The biggest gains are rarely in buttons: the offer, the pricing presentation and form length are the typical big levers.
IN PRACTICE
The stages of the CRO process
Diagnosis
Analytics locates the biggest drop, maps and recordings explain the cause. A survey completes it: what stopped you from buying?
Hypotheses and priorities
Fix candidates are listed and ordered by impact, confidence and effort. Big levers first.
Testing and rollout
Changes are proven with an A/B test before shipping. Lessons are logged, and the cycle restarts.
PITFALLS
Two CRO mistakes
Optimising without a diagnosis
Improvements are guessed by feel and buttons get tested while the leak is on the pricing page. Data first, changes second.
Wins declared too early
A week’s lift can be chance. Statistical significance and a follow-up period separate a win from noise.
FREQUENTLY ASKED
Frequently asked questions
When should CRO start?+
When the site has enough traffic for diagnosis, typically thousands of visitors a month. Before that, focus on acquiring traffic and getting the basics right.
What does conversion optimisation cost?+
Ongoing CRO work in Finland typically costs 1,500–4,000 €/month. A one-off audit with findings runs 2,000–6,000 €.
What tools does CRO require?+
Analytics, a heatmap and recording tool, and a testing tool. Free tiers are enough to start; the process decides, not the licences.
How big are CRO’s improvements?+
Systematic work typically produces a 20–50 % improvement in a year. A single big find, such as a broken mobile form, can double conversion at once.
How do CRO and SEO relate?+
They reinforce each other: speed and clarity improve both rankings and conversion. In a conflict, content is not cut in a way that hurts search visibility.
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Maintained by the VSCY editorial team · Updated 6 Aug 2026 · Part of the marketing glossary (99 terms)
