TL;DR: Conversion rate optimisation (CRO) is the practice of getting more of your existing website visitors to take action — buy, enquire, book or sign up — without spending a penny more on ads. With the average online store converting under 3% of visitors, small improvements to speed, clarity and trust can lift your revenue from the traffic you already have. For most UK small businesses it is the cheapest growth lever there is. What is conversion rate optimisation? Your conv