Best WordPress A/B Testing Tools to Optimize Conversion Rate

By Brian Jackson Updated on August 28, 2018
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Everything on your WordPress site has an impact on your conversion rate. Some things might play just a small part while others could drastically skyrocket your sales. Therefore you should plan on testing every element on your website along the way. There are, of course, both effective and ineffective ways to test and measure their success. But before we dive into some of the best WordPress A/B testing tools we recommend, let’s discuss the importance of testing your web pages and why it leads to better conversions.

What is A/B Testing?

Successful web developers rely on two types of testing. A/B testing, also called split testing, pits two page elements against each other in a head-to-head scenario that tells you which element readers respond to more. For instance, if you want to test a headline, you can design two identical web pages that feature separate headlines and direct traffic to each web page to see which headline results in more page views, time on page, higher conversions, etc.

A/B split testing

A/B split testing

The other type of testing popular among online marketers is multivariate testing. Multivariate testing allows you to compare and test multiple variations of the same page to see which page users respond to more positively. It is a great testing method, however, it is limited in narrowing down the best specific page elements you want to test.

To get an idea of how website visitors respond to specific elements on a web page, A/B testing is more effective. A multivariate test can tell you which version of a web page is more effective, but to test individual elements on a web page, A/B testing is the preferred method because it allows you to drill down to each specific page element and determine which one serves your readers the best and converts more traffic to sales. The pay off is that A/B testing can often be a long process, but that’s because it gives you the most thorough and accurate results for the elements you want to test.

There's no such thing as being done with A/B testing, it's a never-ending process. ūüĎć Click to Tweet

What Can You Split Test on Your WordPress Site?

Since A/B testing is the more accurate of the two methods, you should plan to implement a strategy that allows you to test each element on your website and on each web page. To do that effectively, isolate each element and test them separately. The idea is to pick two versions of the same page element and test them against each other to see which one is the most effective in increasing page views, conversions, and other important metrics.

Start with your headers. Take two headers and compare them with an A/B test to see which one gets better results.

Footers and sidebars can be tested in the same manner. For instance, if you want to see whether a three-column footer or a four-column footer is more favorable for site visitors, run an A/B test where you sample each footer to a segment of your audience. The same goes for your sidebars. You can test your audience’s response to two sidebars versus one sidebar or test which of two different single-sidebar layouts is most effective.

Another site-wide test you can run involves color schemes. After you narrow down your theme, pick two color schemes and run a test on those to see which is more favorable.

Other things you can test include:

If you think about it, the possibilities are really endless when it comes to A/B testing. ? That is the exciting part. But that also means you should always be testing.

Best WordPress A/B Testing Tools

WordPress has incredible tools for A/B testing. Many of these tools are plugins or services that you can install and start using right away. Most of them easy to use so you don’t need any technical skills. If you can install WordPress and do some slight modifications, then you can use these WordPress tools to run effective A/B tests on your website.

Some of the tools below test specific web page elements while others are general testing tools. A few of them speak for themselves while others are recommended based on developer reputation. Note: make sure to test the A/B testing solutions with your cache (whether it is server-level cache or a caching plugin).

  1. Google Optimize
  2. Nelio A/B Testing
  3. Thrive Headline Optimizer
  4. Simple Page Tester
  5. A/B Press Optimizer
  6. Title Experiments
  7. WordPress Calls to Action
  8. WordPress Landing Pages
  9. Marketing Optimizer

1. Google Optimize

Google Optimize, previously called Google Content Experiments, is an awesome re-developed tool from Google! This is now integrated with Google Analytics and is very easy to use and very powerful. The best part is that it’s completely free for up to 5¬†simultaneous experiments. Which is probably plenty for most of you. The premium version is available in Optimize 360. Check out the differences between Google Optimize and Optimize 360. We use the free version of Google Optimize at Kinsta and love it!

Google Optimize

Google Optimize

There is no WordPress plugin, but all you have to do is insert a piece of code into your website’s header. A great example of something we use this for is to test different copy on our WordPress sidebar widgets. Change the copy, hook up the button with different UTM parameters and an event, and then launch the A/B test in Google Optimize. We can then track which sidebar widget converts more and gets more clicks.

The even better part is that it’s tied in automatically with Google Analytics, so you can hook it up directly with your goals. Pretty cool! Google Optimize is definitely our favorite A/B testing tool at the moment.

A/B testing with Google Optimize

A/B testing with Google Optimize

Basically, any HTML or CSS element on your WordPress site can easily be changed in Google Optimize.

2. Nelio A/B Testing

Nelio A/B Testing is the most powerful and versatile conversion optimization services for WordPress. It helps you define, manage, and keep track of A/B-testing experiments, combined with powerful and beautiful Heatmaps. Nelio’s also compatible with WooCommerce. Never leave WordPress, you can do everything from your admin dashboard.

Nelio A/B Testing WordPress plugin

Nelio A/B Testing WordPress plugin

The basic plan is $29/month. There is also a professional-level service for $89/month, great for small businesses. Finally, the enterprise-level plan is $259/month. Pricey, but you can use it on up to 10 websites, you can schedule your experiments, and there are other cool features like Auto Stop Experiments. Annual billing can shave off a little on these prices.

Nelio A/B Testing would be our first choice if you’re looking for a tool that integrates really well with WordPress.

3. Thrive Headline Optimizer

Thrive Headline Optimizer is a great solution for improving your click-through rate, time on content, and scrolling. This is a premium plugin that starts at $67 a year for one website. It’s fully compatible with WooCommerce and you can put it on auto-pilot. Set your own automatic winner settings to get better CTR and walk away.

Thrive Headline Optimizer WordPress plugin

Thrive Headline Optimizer WordPress plugin

Just like Nelio, this has a very tight integration with WordPress and is well supported by the developers.

4. Simple Page Tester

Simple Page Tester is a plugin that lives up to its name. It’s free with a premium upgrade, the cost of which is $59. It’s SEO friendly, supports caching solutions, and is compatible with Google Analytics.

Simple Page Tester WordPress plugin

Simple Page Tester WordPress plugin

With the premium upgrade, you get split testing on custom post types, shortcodes, conversion tracking, WooCommerce integration, and a year of e-mail support.

5. AB Press Optimizer

AB Press Optimizer lets you quickly and easily create dozens of different versions of your images, buttons, content blocks, forms, and headlines. The personal version of this WordPress plugin allows you to install it on one website for $49. For $99, you can test up to three websites. The Agency plan offers unlimited site testing for $199. Each level of service provides an unlimited number of experiments for an unlimited number of visitors. You get real-time reporting with expert features and support.

A/B Press Optimizer WordPress plugin

AB Press Optimizer WordPress plugin

Test your themes, posts, pages, and custom post types using shortcodes. Easy to use and install. This is also great for split testing WordPress widgets and different advertisements to see which has a better CTR.

6. Title Experiments Free

Title Experiments is very basic, but does one thing and does it well. Test your titles and discover which ones get a higher click-through rate for free. There is a premium version for $19.99/year which allows you to test multiple features images, detailed statistics, and even automatic experiment freezing.

Title Experiments Free WordPress plugin

Title Experiments Free WordPress plugin

7. WordPress Calls to Action

Besides headlines, calls to action are one of the most important page elements for conversion optimization. The WordPress Calls to Action plugin lets you test your links, social media buttons, file downloads, and set up call-to-action templates. This free plugin will also help you to track conversion rates and run multivariate tests.

Tired of bad plugin and theme updates breaking your WordPress site?

Kinsta’s one-click staging environment makes testing WordPress updates a breeze; without harming your live site. Make a mistake? No problem, easily restore it to a previous point in time.
WordPress Calls to Action plugin

WordPress Calls to Action plugin

8. WordPress Landing Pages

The WordPress Landing Pages plugin is created by the same developer as WordPress Calls to Action. Instead of testing single elements on your landing pages, you can run split tests on the landing pages themselves. Customize templates, track conversion rates, and even run multivariate tests if you want to test several elements at once. This free plugin has a visual editor, pre-populates your forms, and allows you to clone your splash pages.

WordPress Landing Pages plugin

WordPress Landing Pages plugin

There are premium add-ons which you can purchase to extend this plugin even further.

9. Marketing Optimizer

The Marketing Optimizer plugin¬†is completely free and allows you to A/B test everything, from overlays, CTAs, landing pages, headlines, page layouts, images, button styles, and much more. They even include a bunch of free templates you can use right out of the box. It’s also fully compatible with popular caching plugins and WordPress hosts that use server-level caching.

Marketing Optimizer WordPress plugin

Marketing Optimizer WordPress plugin

Additional A/B Testing Tools

Here are a couple additional A/B testing tools that might not have as tight of an integration with WordPress as some of the ones above, but still deserve a mention. Some of these work similarly to Google Optimize, letting you edit HTML and CSS elements directly on a page. However, they also have a higher learning curve to implement and use. And pricing is significantly more than the solutions mentioned above.

Summary

If you want your WordPress website to convert visitors to customers, then A/B testing your web page elements is essential. That includes headlines, graphics, opt-in forms, the content, page layout, and anything that could potentially hinder your sales. And remember, A/B testing is a never-ending process.

Have we missed anything? What other WordPress A/B testing tools have you tried on your site and pages? Would love to hear your thoughts in the comments below.

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  1. Gravatar for this comment's author
    Moshe July 6, 2018 at 10:30 am

    I’m surprised that there is no mention of Thrive Optimize and Thrive Leads? Both tools have built-in a/b testing.

    1. Gravatar for this comment's author
      Brian Jackson July 6, 2018 at 2:15 pm

      Hey Moshe!
      We’ve added Thrive Headline Optimizer to the post above. Definitely one of the best out there.

  2. Gravatar for this comment's author
    Liew Cheon Fong July 6, 2018 at 10:35 am

    Could you recommend tools for A/B pricing test?

    1. Gravatar for this comment's author
      Brian Jackson July 6, 2018 at 10:40 am

      Hey Liew, so this post is queued for a rewrite. But I can tell you we have been using Google’s free Optimize solution recently here at Kinsta and it’s great! In fact, we’re going to be publishing an in-depth walkthrough with how we use it to A/B test all sorts of things.

  3. Gravatar for this comment's author
    Ankit Yadav July 7, 2018 at 8:21 am

    What about VWO?

    1. Gravatar for this comment's author
      Brian Jackson July 13, 2018 at 10:54 am

      Hey Ankit,
      VWO is included in the post. Definitely one to check out.

  4. Gravatar for this comment's author
    Bruno August 16, 2018 at 5:37 am

    How can I make a/b test on single.php pages?
    Look, I have lot of posts in single.php like : mysite.com/one-post and mysite.one/another-post

    How can I make a/b test on those pages? Both are using single.php file but how can I split it?

    1. Gravatar for this comment's author
      Brian Jackson August 24, 2018 at 12:37 am

      Hey Bruno!
      Many of the tools listed above have the ability to run split tests. This isn’t something you have to worry about configuring on the WordPress side. Rather in the A/B testing tool, you say that you want to split test traffic against URL #1 and URL #2. You can do 50/50 traffic, etc. to test the results.

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