Optimising Your Conversion Rate: Where CRO and SEO Work Together

This article takes a deeper look at optimising your conversion rate, a key aspect of the broader topic of SEO conversion rate. A/B testing and CRO techniques can increase conversions by 20% to 50% on high-impact pages.

Conversion rate optimisation (CRO) has grown steadily in importance as a marketing discipline over the years. In the past, many businesses focused on relevant but incomplete metrics, such as the number of visitors over a given period. As we explain below, CRO depends on several factors and requires the right tools to identify a website's strengths and weaknesses effectively.

What Is Conversion Rate Optimisation?

A conversion occurs when a website visitor does what you want them to do. In e-commerce, this is most often a purchase, but depending on the type of site or industry it can take many other forms: starting a free trial if you sell subscriptions, completing an enquiry form, signing up to a newsletter, watching a video, and so on. The conversion rate is the ratio of people who complete the desired action to the total number of visitors, multiplied by 100 to produce a percentage. For example, if your goal is newsletter sign-ups and you receive 25 sign-ups from 400 visits, your conversion rate is (25/400) x 100 = 6.25%.

At every stage of the customer journey, some users leave your site as part of the natural conversion funnel. By optimising your conversion rate, you minimise drop-off at these critical moments, ensuring as many people as possible reach the point of purchase, where a prospect becomes a customer. To illustrate with figures: if your site has 200,000 monthly visitors and a conversion rate of 3%, that amounts to 6,000 conversions. If your marketing team succeeds in raising the conversion rate to 4%, that volume rises sharply to 8,000.

The Benefits of CRO

• Higher ROI;
• Lower customer acquisition costs;
• Reduced bounce rate;
• Improved user experience;
• A better understanding of your customers;
• Greater customer retention;
• A competitive advantage.

SEO and Conversion Rate: Two Closely Linked Concepts

Organic search and the SEO conversion rate are complementary. You cannot claim to have a coherent marketing strategy if you neglect one or the other. With strong SEO and good visibility in the SERP, you do not simply attract more traffic to your website — you also bring in a more qualified audience. Visitors are therefore more likely to find your content relevant, which naturally supports CRO. Conversely, CRO work can have a positive knock-on effect on SEO: if an improved user experience means visitors spend longer on the site and bounce less frequently, this sends a strong quality signal to Google, which is constantly seeking to surface the most useful results. Your site is then more likely to be recognised as relevant and to earn stronger rankings in the SERP.

Identify Your Website's Weak Points

How do you go about improving a website's conversion rate? CRO begins with pinpointing what needs to change. Start by reviewing page load times to ensure users are not kept waiting before content displays correctly. Design quality and usability also matter, as they shape customer satisfaction and overall perception of your brand. Registration and checkout processes should be straightforward yet secure, making it easier for potential customers to purchase your products or services online. It is also worth checking that all links are active and that content genuinely matches your target audience's expectations. Finally, online surveys can be a useful way to gauge customer satisfaction across different criteria.

How Do You Know Whether a Conversion Rate Is Good?

We have a dedicated article exploring what counts as a good conversion rate. It is always difficult to give a definitive answer, because conversion rate is a relative measure that depends on your business sector and other performance indicators. That said, by objectively reviewing your website and its content, you can identify areas for improvement — whether in design, navigation, usability, or the quality of the copy. If improvements are possible, there is room to grow, which means the work of optimising your conversion rate is not yet done.

Using Analysis Tools

Using the right analysis tools is essential for understanding and improving your website's effectiveness and conversion rate. Data gathered through Google Analytics or Incremys — which integrates both Google Analytics and Google Search Console via API as part of its SEO 360° SaaS platform — can be used to monitor traffic, identify sources that generate conversions more readily, and evaluate the impact of different on-page elements. These analytics tools also allow you to track performance in real time and better understand how different audience segments interact with your content across devices (desktop, mobile). You can equally assess the effectiveness of your advertising campaigns with greater precision to improve ROI. When used well, analysis tools are indispensable for optimising your conversion rate.

In Summary

You no longer need to wonder what impact optimising your conversion rate has on your company's ROI: we have demonstrated just how beneficial CRO can be. To be truly effective, however, this marketing approach must be implemented with precision and supported by expert guidance and relevant analysis tools.

Read our complete guide to conversion rate to explore the topic in greater depth.

Conversion Rate Optimisation and GEO: One Unified Strategy

Conversion rate optimisation (CRO) and GEO share the same fundamental goal: maximising the value of every visitor. In 2026, the strongest optimisation strategies combine both dimensions simultaneously, because the levers overlap — clear content, structured data, and direct answers to users' questions all serve both objectives.

• CRO levers that also support GEO: Improving title tags, structuring content with logical H2/H3 headings, incorporating quantified data, and adding FAQs are classic CRO actions that can also increase AI citability by 40% (HubSpot, 2025). Each improvement serves two purposes at once.
• Prioritising optimisation work: Start with pages that rank well in organic search but have a low conversion rate. These are typically the pages with the greatest untapped GEO potential — they are already visible but not converting enough. Combining CRO and GEO on these pages tends to deliver the fastest ROI.
• Unified measurement: A dashboard that brings together conversion rate, SEO rankings and generative share of voice makes it straightforward to identify which pages to prioritise and to measure the real impact of each action.

The Incremys reporting module centralises CRO, SEO and GEO metrics so you can manage a unified optimisation strategy from a single platform.

Frequently Asked Questions

How do you optimise a website's conversion rate?

The most impactful levers, in order of priority, are: improving load speed (under 3 seconds), aligning each page with a clear search intent, simplifying the conversion journey (fewer steps, fewer form fields), running systematic A/B tests, improving mobile readability, and adding reassurance elements tailored to each stage of the funnel.

Which tools should you use for conversion rate optimisation?

Key tools include: GA4 for data and journey analysis, Google Optimize or AB Tasty for A/B testing, Hotjar or Microsoft Clarity for heatmaps and session recordings, Google Search Console for organic CTR, and Incremys for combined SEO, GEO and conversion tracking. Start with GA4 and a heatmap tool before investing in more advanced solutions.

How long does it take to see results from a CRO programme?

An A/B test typically requires 2 to 4 weeks to reach statistical significance, depending on traffic volume. Technical improvements (speed, mobile) can show results within days. Content and UX optimisations generally show their impact within 4 to 8 weeks. A structured CRO programme can deliver cumulative gains of 20% to 50% over 6 to 12 months.

What is the difference between CRO, UX and A/B testing?

CRO (conversion rate optimisation) is the overarching approach to increasing the percentage of users who complete a desired action — whether that is a purchase, a lead, a trial sign-up, or a registration. UX (user experience) is a key lever within CRO: it improves comprehension, trust and the smoothness of the user journey. A/B testing is a validation method used within CRO that compares two variants (A vs B) to determine — using data — which one converts better.

Which KPIs should you track to manage conversion rate optimisation?

Priority KPIs include: conversion rate by page and by channel, click-through rate (CTR) on CTAs, bounce rate and engagement, exit rate at each funnel stage, form and basket abandonment rate, revenue per visit (RPV), and cost per lead or sale. For actionable insights, always segment by device (mobile vs desktop), source (SEO, paid ads, email) and intent (informational vs transactional).

How should you prioritise pages for CRO?

Prioritise pages that combine: (1) high traffic volumes, (2) intent close to conversion — such as landing pages, product pages and pricing pages, (3) a below-average conversion rate, and (4) direct business impact in terms of qualified leads, MRR or average order value. A practical approach is to apply a simple scoring model (traffic x value x ease of implementation) to build a structured optimisation backlog.

Which common mistakes cause conversion rates to fall?

The most frequent culprits are: unclear messaging (value proposition not visible above the fold), vague CTAs, overly long forms, insufficient reassurance (testimonials, proof points, security signals), slow page load times, a poor mobile experience, too many distractions or exit points, and decisions based on "best practices" without any measurement — that is, no testing and no KPI tracking.

How does conversion rate optimisation apply in B2B?

In B2B, conversion is often a micro-objective — a demo request, a content download, or booking a meeting — rather than an immediate purchase. Optimising conversion rates in a B2B context relies on: strong credibility signals (client case studies, figures, brand logos), CTAs aligned to the buyer's level of maturity (demo vs educational content), progressive forms, and close alignment between SEO content (intent) and the offer (lead magnet, demo, free trial).

Further Reading

Explore the other articles in our conversion rate series:

• what makes a good conversion rate
• CRO
• CTR optimisation
• conversion rate definition
• SEO and conversion
• conversion rate KPIs
• customer conversion rate
• landing page conversion rate
• Google Analytics
• Google Analytics KPIs
• semantic cocoon
• SEO audit

Find more practical guidance on SEO, GEO and content strategy on the Incremys blog.