Insights & Ideas

The Wren21 Blog

Data-backed thinking on conversion, experimentation, and growth.

How AI is changing CRO

AI is transforming conversion rate optimisation by helping teams analyse data faster, generate stronger hypotheses, scale personalisation, and streamline experimentation. In this guide, we explore how AI in CRO is changing the optimisation process, where it adds genuine value, and why human expertise remains essential for driving meaningful conversion growth.

5 min read

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Digital Analytics·CRO & Testing

How to use heatmaps to improve conversion rates

Heatmaps are one of the most effective tools for understanding how users interact with your website. This guide explores how to use click, scroll, hover, and rage click heatmaps to identify friction points, uncover optimisation opportunities, and improve conversion rates. Learn how to turn behavioural insights into actionable CRO hypotheses and data-driven website improvements.

5 min read

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Ecommerce

How to reduce cart abandonment on ecommerce websites

Learn how to reduce cart abandonment with practical CRO strategies that remove friction, improve checkout UX, and increase ecommerce conversions.

5 min read

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CRO & Testing

Why your A/B tests aren’t producing winners

Struggling to get meaningful A/B test results? Learn the biggest CRO testing mistakes brands make, from weak hypotheses and low traffic to poor research and testing tiny changes nobody notices.

4 min read

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CRO & Testing·Ecommerce

10 CRO Mistakes Ecommerce Brands Still Make

Discover 10 common ecommerce CRO mistakes that quietly hurt conversions, from slow site speeds and weak CTAs to poor mobile UX and clunky checkout flows.

3 min read

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AI·CRO & Testing

The Best AI Tools for CRO in 2026

Discover the best AI-native CRO tools for 2026, including platforms for personalisation, landing page optimisation, AI heatmaps, behavioural analysis, and automated CRO insights.

4 min read

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Landing Pages·Marketing Tactics

How to Create a Landing Page That Converts

Learn how to create a landing page that converts with practical CRO strategies focused on messaging, CTAs, trust signals, UX, mobile optimisation, and reducing friction.

5 min read

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CRO & Testing

The 5 site issues killing your conversion rate (and how to fix them)

Poor conversion rates are often caused by small website issues that quietly create friction for users. From slow page speeds and unclear messaging to weak CTAs and poor mobile experiences, this guide breaks down the five most common problems hurting conversions and how to fix them.

4 min read

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