What is CRO?
CRO, or conversion rate optimization, is the ongoing practice of increasing the share of visitors who complete a desired action. It combines research, testing, and design changes to turn more of your existing traffic into customers or leads.
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How CRO works
CRO starts with research: analytics, heatmaps, session recordings, surveys, and usability testing show where people struggle. From that you form hypotheses about what to change and why it should help.
You then test those changes, usually with A/B tests, keep what works, and repeat. It's a cycle rather than a one-time project.
What CRO can change
Common areas include headlines, offers, forms, page layout, navigation, checkout steps, and trust signals. Changes can also cover page speed and mobile usability.
CRO vs. driving more traffic
More traffic raises the number of visitors, while CRO raises the share who act. They work together: improving conversion rate makes every dollar spent on traffic go further.
Common questions
What does CRO stand for?
CRO stands for conversion rate optimization. Some people also use it to mean conversion rate optimizer, which is the person doing the work.
What is a typical CRO process?
Research the problem, form a hypothesis, design a change, run a test, analyze the result, and apply what you learned. Then start the cycle again with the next idea.
How long does CRO take to show results?
Individual tests take a few weeks, depending on traffic. Lasting gains come from running many tests over time, so treat it as an ongoing program.
Do you need a lot of traffic for CRO?
Controlled tests need enough traffic to reach reliable results. With lower traffic, rely more on research, usability testing, and bigger changes instead of small A/B tests.
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