What Is Conversion Rate Optimization (CRO)?
Conversion rate optimization (CRO) is the systematic practice of increasing the percentage of visitors who take a desired action — through testing, design, copy and UX improvements. CRO squeezes more results from existing traffic, often via A/B testing landing pages, forms and calls to action.
Key takeaways
- CRO improves the share of visitors who convert, without needing more traffic.
- It relies on testing (A/B), analytics and UX/copy improvements.
- Small conversion gains compound across the whole funnel.
How CRO works
- Analyze where visitors drop off.
- Form a hypothesis about why.
- Test a change (A/B or multivariate).
- Keep the winner and repeat.
Why it matters
Doubling conversion is equivalent to doubling traffic — but far cheaper, because it works the audience you already paid to attract. A few points of improvement at each funnel step multiply into a large change in overall results.
Frequently asked questions
What is conversion rate optimization?
The systematic practice of increasing the percentage of visitors who take a desired action, through testing and improvements to design, copy and UX.
How does CRO work?
By analyzing drop-off, forming hypotheses, testing changes (often A/B tests) on pages and forms, and keeping the variants that convert better.
What's a good conversion rate?
It depends on the page and traffic source — there's no universal number. CRO focuses on improving your own baseline over time.
Related service: Optimize conversion in HubSpot