What is conversion rate optimisation?
Improving the share of visitors who enquire, buy or book by removing friction and making the next step obvious.
Conversion rate optimisation (CRO) improves the percentage of visitors who do the thing you want: enquire, buy, book a call or sign up. It gets more value from the traffic you already have.
Why small gains pay off
If 100 people visit and two enquire, you have a 2% conversion rate. Lift it to 4% and the same traffic produces twice as many enquiries. For many SMEs, that beats paying for more visitors before the page is ready.
What changes the number
- Clarity. An obvious next step and a single, strong call to action
- Trust. Proof, testimonials and a credible, professional design
- Speed. A fast site; even a second of delay costs conversions (see page speed)
- Friction. Fewer form fields and fewer hoops to clear before someone can act
- Relevance. The page matching what the visitor came for
What counts as a good rate?
It depends on the action and the traffic. A high-value enquiry form might convert at 1–3%; a simple newsletter sign-up far higher. Chasing someone else’s benchmark is less useful than beating your own last number. The honest question is “is this page doing better than it was?”
How it’s done well
CRO works best with evidence. Analytics, recordings, user feedback and tests show where people hesitate. Then you change one thing, measure the result, and keep the parts that help. It is where UX, clear positioning and SEO traffic turn into enquiries.
Where to start
Start with the page that matters most and the one obvious leak: a slow load, a buried call to action, a form asking for too much. Fix it, measure, keep what helps. On a low-traffic site you won’t reach statistical certainty, so lean on clarity and known good practice rather than endless testing. Much of this is website work; the messaging and measurement behind it is marketing foundations.
Common questions
How much traffic do I need to test properly? Enough for a result to mean something: hundreds of conversions, not a handful. Below that, improve on principle rather than on flaky A/B tests.
Is CRO just tweaking button colours? No. The biggest gains almost always come from clarity, trust and speed, not the colour of a button.
More traffic or better conversion first? If the page isn’t converting, more traffic just wastes more of it. Fix the page, then pour traffic in.