What is CRO, really?
We’ve written about what CRO is before, but it’s worth a quick recap. CRO stands for Conversion Rate Optimisation. In plain English, it’s the practice of improving your website so that a higher percentage of visitors do the thing you want them to do.
That “thing” depends on your business. For an e-commerce site, it’s usually a purchase. For a service business, it might be a contact form submission or a phone call. For a SaaS company, it could be a free trial signup.
Here’s why it matters: imagine you have a website that gets 1,000 visitors a month and converts 2% of them into enquiries. That’s 20 enquiries. If you improve your conversion rate to 4%, you’ve doubled your enquiries to 40 without spending a penny on extra traffic. Same visitors, double the results.
CRO isn’t about getting more people to your website. It’s about getting more value from the people who are already there.
This is exactly what I was getting at in our post about why SEO alone won’t improve your financials. Driving traffic is only half the equation. If your website doesn’t convert, more traffic just means more people leaving without doing anything.
The CRO process: How it actually works
CRO isn’t about randomly changing button colours and hoping for the best. It’s a structured, data-driven process. Here’s how we approach it.
1. Audit your current performance
Before you change anything, you need to understand what’s happening right now. This means digging into your analytics to answer questions like:
- What’s your current conversion rate? And how does it vary by page, device, and traffic source?
- Where are people dropping off? Which pages have high exit rates? Where in your funnel are you losing people?
- What are people actually doing? Heatmaps and session recordings show you where visitors click, how far they scroll, and what they ignore entirely.
- What’s the user journey? How do people move through your site from landing page to conversion? Are there unnecessary steps or confusing navigation?
We covered the audit process in detail in our guide to conducting a website audit. It’s worth reading alongside this post.
2. Form hypotheses
Based on your audit findings, you create hypotheses. These are educated guesses about what changes might improve conversions, grounded in data rather than gut feeling.
A good hypothesis looks like this: “We believe that simplifying the contact form from 8 fields to 4 will increase form submissions because our data shows a 60% drop-off rate on the form page.”
Notice the structure: what you’ll change, what you expect to happen, and why you think so. This keeps your CRO work focused and measurable.
3. Test your changes
This is where A/B testing comes in. Rather than just making a change and hoping it works, you show the original version to half your visitors and the new version to the other half, then compare the results.
A/B testing removes opinion from the equation. It doesn’t matter what you, your designer, or your mum thinks looks better. The data tells you which version actually performs better.
Not every test needs to be an A/B test, though. If your website gets relatively low traffic (under a few thousand visitors a month), A/B tests can take too long to reach statistical significance. In those cases, making well-informed changes based on best practices and monitoring the results can be more practical.
4. Iterate and repeat
CRO isn’t a one-time project. It’s an ongoing process. You make a change, measure the results, learn from what happened, and use those insights to inform your next round of improvements.
This is the marginal gains approach we’ve written about before. Each individual improvement might seem small, but they compound over time into significant results.
Key CRO metrics you need to track
You can’t optimise what you don’t measure. Here are the metrics that matter most:
- Conversion rate: The percentage of visitors who complete your desired action. This is your headline number.
- Bounce rate: The percentage of visitors who leave after viewing just one page. A high bounce rate on key landing pages is a red flag.
- Average session duration: How long people spend on your site. Longer isn’t always better, but very short sessions usually indicate a problem.
- Pages per session: How many pages people view. This helps you understand engagement.
- Exit rate by page: Where are people leaving your site? If your pricing page has a sky-high exit rate, that’s worth investigating.
- Form completion rate: If you use forms, what percentage of people who start filling them in actually submit them?
- Cart abandonment rate: For e-commerce, how many people add items but don’t complete the purchase? Our guide to checkout conversions covers this in detail.
Common conversion killers
Over the years, we’ve seen the same problems come up again and again. Here are the most common things that kill conversions on small business websites.
Slow page speed
Every second of load time costs you conversions. Research consistently shows that pages taking longer than 3 seconds to load see significant increases in bounce rates. If your site is slow, fix it before you do anything else.
Unclear value proposition
When someone lands on your website, they should be able to understand what you do, who you do it for, and why they should choose you within seconds. If your homepage opens with something vague like “Innovative solutions for a changing world,” you’ve already lost people.
Weak or missing calls to action
If you don’t tell people what to do next, most of them won’t figure it out themselves. Every page should have a clear, specific call to action. Not “Click here” or “Submit,” but something that communicates value: “Get your free quote,” “Book a consultation,” “Download the guide.”
Too much friction
Long forms, complicated navigation, unnecessary account creation, slow checkout processes. Every unnecessary step or piece of friction gives visitors a reason to leave. Simplify everything.
Poor mobile experience
More than half of web traffic comes from mobile devices. If your site doesn’t work brilliantly on phones, you’re alienating the majority of your potential customers. Buttons that are too small to tap, text that’s too small to read, forms that are painful to fill in on mobile. All conversion killers.
Lack of trust signals
People won’t hand over their money or contact details if they don’t trust you. Testimonials, reviews, case studies, accreditations, and security badges all help build trust. If your site has none of these, you’re asking visitors to take a leap of faith.
Distracting design
Our 10 heuristics for website design post covers the principles of effective design. In CRO terms, every element on a page should either support the conversion goal or get out of the way. Cluttered pages, auto-playing videos, pop-ups on every click, these all distract from the action you want visitors to take.
Every element on a page should either support the conversion goal or get out of the way.
CRO tools worth knowing about
You don’t need an enterprise budget to do CRO properly. Here are some accessible tools:
- Google Analytics: Free, and essential. Gives you the foundational data you need to understand user behaviour.
- Microsoft Clarity: Free heatmaps and session recordings. Genuinely useful and easy to set up.
- Hotjar: Heatmaps, session recordings, and surveys. The free plan is decent for smaller sites.
- Google Optimize (sunset, but alternatives exist): For A/B testing, tools like VWO, Optimizely, or even simple WordPress plugins can fill this gap.
- Google Search Console: Shows you what queries are driving traffic and which pages are being found. Useful for understanding the intent behind your visitors.
- PageSpeed Insights: Free tool to check and diagnose page speed issues.
How CRO connects with SEO and web design
CRO doesn’t exist in isolation. It’s tightly connected to both SEO and web design.
CRO and SEO
SEO drives traffic. CRO converts it. They’re two halves of the same coin. There’s no point ranking number one for a keyword if everyone who clicks through leaves immediately because your page is rubbish.
Google also uses engagement signals (like bounce rate, time on page, and pogo-sticking back to search results) as indicators of quality. A well-optimised page that keeps visitors engaged and converts them is also a page that’s more likely to maintain its search rankings.
CRO and web design
Design is the vehicle for conversion. Layout, visual hierarchy, colour, typography, and white space all influence how visitors perceive your business and whether they take action. A beautiful website that doesn’t convert is just an expensive brochure. A high-converting website that looks terrible won’t inspire trust.
The sweet spot is a well-designed website built with conversion in mind from the start. That means every design decision is informed by what we know about user behaviour, not just what looks pretty.
Even small details matter. Something as simple as whether you use title case or sentence case on your headings can affect readability and conversion.
Quick wins you can implement today
If you want to start improving your conversion rate right now, here are some practical steps. We covered more in our 5 quick wins post, but here’s a summary:
- Review your top 5 landing pages. Are the calls to action clear and prominent? Is the value proposition obvious?
- Check your forms. Can you remove any fields? Is the submit button text specific and compelling?
- Test your site on your phone. Really use it. Try to complete a conversion. Note everything that feels awkward.
- Add social proof. Testimonials, reviews, case study snippets, trust badges. Put them where they support your conversion goals.
- Check your page speed. Run your key pages through PageSpeed Insights and address the biggest issues first.
When to bring in help
CRO is something any business can start doing with the basics we’ve covered here. But there comes a point where having an experienced pair of eyes makes a real difference. An objective audit from someone who isn’t emotionally attached to your website will almost always uncover things you’ve missed.
We’ll be covering specific CRO topics in more detail in upcoming posts, including how to build landing pages that actually convert and how to optimise forms for maximum submissions. Keep an eye on our blog for those.
If you’d like to have a proper conversation about improving your website’s conversion rate, drop us a line. We’re always happy to chat through what’s possible, and our CRO service page has more detail on how we approach it.
