Upluggit

VariantFlow is a blazingly fast, zero-bloat A/B testing tool built natively for the WordPress Gutenberg editor. Instead of relying on heavy third-party SaaS platforms or bloated plugins that ruin your site speed, VariantFlow runs entirely within your WordPress dashboard.
Major Features: 
* Native Gutenberg Experience: Design your Variation A and Variation B directly inside the block editor. No external builders. 
* 100% Cache Compatible: The plugin uses a lightweight client-side script (< 1kb) to randomize variations, guaranteeing it works perfectly with WP Rocket, LiteSpeed Cache, W3 Total Cache, and any host-level page caching. 
* Zero Performance Hit: The tracking REST API endpoint is asynchronously called, ensuring your page load speed is never affected. 
* Clean Analytics: View a beautifully designed, minimal dashboard right in your WordPress admin to see Views, Clicks, and Click-Through Rates (CTR). 
* Smart Winner Declaration: Set a custom “Minimum Views” threshold (e.g., 50 or 100 views) before the plugin automatically highlights the statistically winning variation, preventing false positives. 
* Privacy Focused: Stores data securely in your own database. No tracking pixels, no third-party data sharing.
<h3>Common Use Cases</h3>
Not sure what to test? Here are a few ways VariantFlow can instantly increase your conversions: 
* Call-to-Action (CTA) Buttons: Test “Buy Now” vs. “Add to Cart” or “Get Started” vs. “Learn More”. See which text generates more clicks. 
* Pricing Pages: Test displaying a monthly pricing table vs. an annual pricing table to see which yields a higher click-through rate to your checkout. 
* Landing Page Headlines: Write two drastically different H1 headlines for your sales page to see which hooks more readers into clicking your links. 
* Lead Generation Forms: Test a short, simple form against a longer form with more details to find the sweet spot for email signups.

VariantFlow – Lightweight A/B Testing Block


I think this is a great idea and a really solid start. I like that you're keeping a simple, native Gutenberg feel.


Great Start for Native Gutenberg A/B Testing

A lightweight, native Gutenberg block A/B tester with zero bloat. 100% compatible with page caching.

Gaya Kessler

Easiest way to create split tests on your WordPress sites, right from the content editor!
Improve your website and start measuring your audience now.
Create A/B tests right in the content editor. Test which button colour works best, what content drives people to engage, anything you can imagine!
<h4>Add A/B Tests from Anywhere in the Content Editor</h4>
A/B Testing for WordPress allows you to create split tests right from the visual content editor. Measures the results of your tests and shows you which variant is the most popular choice.
You add a block to your content which you can fill with anything you want to, and switch between variants instantaneously to preview what visitors will see. Define distribution weight, pick the goal of the test, and off you go!
Place tests inside posts, pages, custom post-types, or any part of your template using shortcodes.
<h4>Safe for SEO</h4>
Everything has been implemented with SEO in the back of the mind, which means the plugin will do nothing to affect your SEO. It works just like most A/B testing tools out there, but natively from your own WordPress site without the use of 3th-party services.
<h4>Measure Results</h4>
A/B Testing for WordPress provides an overview of running tests and the measured results. It also shows the statistical significance of the test results so you can be confident a test is successful or not.
When you are done running your tests and can come to a conclusion you can break the winning variant out of the test and remove the test from the content with just one click.
<h4>Integrates with Other Plugins</h4>
A/B Testing for WordPress integrates with other WordPress plugins. This provides a streamlined experience to test variations of what the integrated plugin has to offer. Think form submissions, sign ups, product sales.
Integrates with <a href="https://wordpress.org/plugins/mailchimp-for-wp/" rel="ugc">Mailchimp for WordPress</a>, <a href="https://wordpress.org/plugins/html-forms/" rel="ugc">HTML Forms</a>, <a href="https://wordpress.org/plugins/contact-form-7/" rel="ugc">Contact Form 7</a>, <a href="https://wordpress.org/plugins/wpforms-lite/" rel="ugc">WPForms</a>, Gravity Forms, <a href="https://wordpress.org/plugins/ninja-forms/" rel="ugc">Ninja Forms</a>, <a href="https://wordpress.org/plugins/formidable/" rel="ugc">Formidable</a>
<h4>Test Your Visitors Right Now!</h4>
Start measuring what works best on your site without all the hassle!

A/B Testing for WordPress

I've had the idea for an A/B testing plugin for WordPress for years and shared it with Gaya a few weeks ago. Not saying he got the idea from me, he may have already been thinking along the same lines. Given his experience with A/B testing tools in other website builders, he had a first prototype ready just a few days later. 

And it's good! This is already a great tool to test variations of your content to see what drives the result you're looking for. And it's been improving steadily over the last few weeks.

Knowing Gaya and his iterative approach to building great and usable software (e.g. Thyme), I can't see how this will not be a success.

Finally

Easiest way to create split tests on your WordPress sites, right from the content editor!

VariantFlow – Lightweight A/B Testing Block vs A/B Testing for WordPress