What Is Conversion Rate Optimisation?
Conversion rate optimisation (CRO) is the process of improving a website or journey so more of the right visitors complete a useful action. That action might be submitting an enquiry, booking a call, requesting a quote or making a purchase. CRO starts with evidence about visitor behaviour, not guesses about button colours.
How to approach it step by step
What does conversion rate optimisation involve?
CRO looks at the full path between a visitor arriving and completing a meaningful action. That can include the message in an ad, the landing page, the offer, the form, page speed, trust signals and what happens after the form is submitted. The goal is to remove unnecessary friction and help visitors make an informed decision.
A useful CRO project begins by defining the conversion that matters to the business. A page view or button click can be a diagnostic signal, but it is not the same as a qualified lead or a sale.
Start with a measurable baseline
Before changing a page, record how the current journey performs. Depending on the business, useful measures can include completed enquiry forms, qualified enquiries, booked calls, checkout completion, lead-to-customer rate and abandonment at key steps. Confirm that analytics and consent settings are working before trusting the numbers.
Segment results where possible: mobile versus desktop, traffic source, landing page and new versus returning visitors. An overall rate can hide a problem affecting one important audience or channel.
Find friction before redesigning everything
Review the page against the visitor’s questions. Is the offer clear? Is the page relevant to the message that brought the visitor there? Are pricing, scope or eligibility explained? Does the form ask for information that is genuinely needed at this stage? Are error messages useful, and does the next step work on mobile?
Use analytics alongside qualitative evidence such as customer questions, sales-team feedback, support messages and usability checks. A drop-off report can show where people leave; it usually cannot explain the reason by itself.
Prioritise changes and test them
Write down the problem, the proposed change and the outcome that would indicate improvement. Start with issues that affect many visitors or block completion, such as a broken form, unclear service proposition or a mobile layout problem. When traffic supports it, controlled experiments can help compare alternatives.
For lower-traffic sites, careful usability testing and a staged release may be more informative than an underpowered A/B test. Avoid declaring a winner from a handful of conversions or changing several major variables at once.
What CRO cannot guarantee
No design or copy change can guarantee more revenue. Outcomes depend on traffic quality, the offer, pricing, market conditions, sales follow-up and the wider customer experience. More form submissions are not automatically better if lead quality falls or the team cannot follow up.
A responsible process measures both quantity and quality, documents what changed and keeps human review in the loop. Privacy and consent requirements should also be respected when collecting behavioural data.
A practical CRO checklist
Define one primary conversion; verify tracking; review the journey on mobile and desktop; compare the page promise with the traffic source; make the offer and next step clear; reduce unnecessary form friction; check trust and accessibility; record the change; and review outcomes after enough relevant activity.
If the issue spans multiple steps, the solution may include a landing page, lead routing, CRM workflow or follow-up process rather than a visual redesign alone.
Useful answers
Frequently asked questions
What is a good conversion rate?
There is no single conversion rate that is good for every website. It depends on the action measured, traffic source, price, audience and buying process. Compare against your own baseline and lead or customer quality.
Is CRO the same as SEO?
No. SEO helps relevant people discover a page through search. CRO focuses on helping visitors who arrive complete a meaningful action. The disciplines work together when search intent, page content and the next step align.
Does CRO require A/B testing?
No. A/B testing can be useful when there is enough traffic and a clear hypothesis, but fixing usability problems, validating analytics and conducting user research can also improve decisions.