A/B Testing, conversion rate optimization, and beautiful Heatmaps with AI Assistance.
As of April 2026, Nelio A/B Testing is a WordPress CRO plugin with 5.0K+ active installations and a 4.8/5 rating from 95 reviews. It has been downloaded 382K+ times in total. Requires WordPress 6.7+ and PHP 7.4+. Available on WordPress.org since 2013. Recently updated within the last 3 months. Downloads are up 17% this week. Top alternative: Unbounce Landing Pages.
Test, learn, and grow with data-driven insights
Nelio A/B Testing is an extremely powerful and easy-to-use A/B Testing and Conversion Optimization plugin for WordPress. Create, manage, and analyze tests directly from your WordPress dashboard — no external tools, coding, or data exports required.
With Nelio A/B Testing, you can test pages, posts, headlines, menus, widgets, WooCommerce products, themes, CSS, synced patterns, and more. Understand how visitors behave with heatmaps, clickmaps, and scrollmaps, and make data-driven decisions that actually improve conversions.
“Nelio A/B Testing has been a game changer for our web strategy. It empowered us to make decisions based on data, not instinct. The simplicity, affordability, and impact have been exceptional.”
Quentin Molinié, Co-founde…
I added Nelio about a month ago. Our wordpress theme made install a bit complicated but Nelio support has been super communicative and helpful every step of the way. I am now able to run several detailed tests throughout my website each month and slowly chip away at getting a better and better conversion rate. Thanks Nelio!
I’ve been testing the Nelio A/B Testing plugin and I’m very impressed with the experience.
The plugin is easy to install and use, provides valuable insights, and is thoughtfully designed for running A/B tests, heatmaps, and user behavior tracking. I also checked site performance and found it has minimal impact compared to other similar tools.
In short: a powerful, easy-to-use solution for optimizing your website and understanding user behavior.
Great plugin with awesome support!
David is very helpful and very fast with his replies. The tool works good and as intended. Easy to create A/B tests in WordPress with many different options and (multiple) goals. Amazing if you use it for wordpress with Hubspot forms as they work seamlessly together.
The support team or the developer, who replied to our email, was very helpful. They answered quickly to our email asking for support. Also they were very solution oriented and helped us fix the problem unlike some other plugins that just says solve it yourself.
| WordPress | 6.7+ requiredTested up to 6.9.4 |
| PHP | 7.4+ required |
done() is missing in variantsphp-snippet scope rules on PHP tests only.nab-css-preview query parameter.nab-javascript-preview query parameter.…and 6 more changes
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.