A/B Testing for WordPress
Stellar makes it easy to run A/B tests on any WordPress site without plugins, coding, or performance issues. Our lightweight 5.4KB script works with any WordPress theme or plugin, helping you optimize conversions without slowing down your site.
Works with your WordPress setup
Our script won't slow down your WordPress site
WordPress sites are often slowed down by heavy plugins. Stellar's script is just 5.4KB - at least 10 times smaller than other A/B testing solutions. It loads instantly without affecting your site performance, SEO ranking, or Core Web Vitals.
At just 5.4KB and served on a CDN, Stellar's pure JS script is 25x smaller than competitors like VWO or AB Tasty. With minimal dependencies and a fixed size regardless of test count, it preserves your website's speed, Core Web Vitals, user experience, and SEO performance.
Test WordPress pages without plugins or coding
Perfect for WordPress site owners and marketers who want to optimize their sites without developer help. Create variations of any page using our visual editor - no WordPress knowledge required.
Works with any WordPress theme
Whether you're using Divi, Elementor, Avada, or any other WordPress theme, Stellar works seamlessly without conflicts.
WooCommerce compatible
Test product pages, checkout flows, and cart experiences to increase your e-commerce conversion rates without breaking your store functionality.
No plugin required
Simply add our lightweight script to your WordPress site - no plugin installation needed, which means no compatibility issues or security concerns.
Easy WordPress Goal Setup
Track form submissions, button clicks, page visits, or custom events on your WordPress site without touching your theme files or adding complex code.
WooCommerce Conversion Tracking
Easily track add-to-carts, checkouts, and purchases to see which variations drive more sales on your WooCommerce store.
Track WordPress conversions, effortlessly
Set up conversion tracking for your WordPress site in seconds with our intuitive interface. No need to edit theme files or add complex code.
Why choose Stellar for WordPress A/B testing?
How to add Stellar to your WordPress site
Sign up for Stellar
Create your free Stellar account - no credit card required to get started.
Add the script to your WordPress site
Copy your unique Stellar script and add it to your WordPress site using a header/footer plugin or by editing your theme.
Create your first A/B test
Use our visual editor to create variations of any page on your WordPress site without coding.
Set up conversion goals
Define what success looks like - form submissions, clicks, page visits, or custom events.
A solid product, but don't take our word for it
Jake M. — Performance Marketer
⭐️⭐️⭐️⭐️⭐️
Other testing tools have a million features I don't need. Stellar focuses on what actually matters: speed, ease of use, and great analytics.
Richard R. — E-commerce Owner
⭐️⭐️⭐️⭐️⭐️
Stellar is the real deal. No unnecessary features, no steep learning curve. Just quick tests that actually improve our store.
Ben C. — Growth Hacker
⭐️⭐️⭐️⭐️⭐️
It does the job without slowing down our pages. If you're running tests and care about performance, this is the tool to use.
Mike T. — Founder @ DTC Brand
⭐️⭐️⭐️⭐️⭐️
Stellar is refreshingly lightweight and ridiculously easy to use. My team got experiments running without having to call in developers. Game changer!
Lauren K. — Growth Marketer
⭐️⭐️⭐️⭐️⭐️
Setting up my first test took no more than 5 minutes. Easily the best testing tool I've used.
Jason B. — CRO Specialist
⭐️⭐️⭐️⭐️⭐️
We were looking for a Google Optimize alternative. Stellar is so simple yet incredibly powerful. And their usage based pricing makes us save a TON compared to our previous contract with VWO.
Sarah J. — Marketing Lead
⭐️⭐️⭐️⭐️⭐️
Stellar keeps it simple but does everything you need. Fast, lightweight, and no unnecessary complexity. Also, their support team are absolute legends.
David R. — SaaS Product Manager
⭐️⭐️⭐️⭐️⭐️
Switched to Stellar after dealing with slow, clunky testing platforms. The difference is night and day. Setup is fast, the script is tiny, and our site loads just as fast as before. Highly recommend.
Tom G. — Lead Designer
⭐️⭐️⭐️⭐️⭐️
Ran my first test in five minutes and without a developer. Reporting is clear, setup is easy, and it just works.
Emily W. — Conversion Specialist
⭐️⭐️⭐️⭐️⭐️
The perfect alternative to all those bloated testing tools. Their support team actually knows A/B testing and helps when you need it.
Common WordPress A/B testing use cases
WooCommerce Product Pages
Test different product descriptions, images, pricing displays, and buy buttons to increase add-to-cart rates.
Lead Generation Forms
Optimize form fields, button text, and surrounding content to boost form completions and lead quality.
Homepage Layouts
Test different hero sections, CTAs, and content arrangements to improve engagement and conversion rates.
Mobile Experiences
Create mobile-specific variations to ensure your WordPress site converts well across all devices.
Checkout Process
Test different checkout layouts, trust signals, and upsell opportunities to reduce cart abandonment.
Landing Pages
Optimize your WordPress landing pages for PPC campaigns to maximize ROI and conversion rates.
Pricing
Free
Up to 25k MTU
Built-in analytics
Visual web editor
Custom CSS & JS editor
AI editor assistant
Basic A/B testing
Limited variants & goals
Limited concurrent experiments
Pro
50k MTU included
Unlimited variants
Unlimited concurrent experiments
Advanced targeting rules
Dynamic keyword insertion
Priority support
Enterprise
Custom MTU volume
Custom solutions
Integrations support
Unlike competitors who charge in fixed large blocks, we dynamically bill in small increments of 1k MTU, ensuring you never overpay
Compared to average competitors like VWO's $4,700/year for 50k MTU, our equivalent annual cost is just $1,118
We only count users who actually see experiments. Multiple experiment views from the same user count as just 1 MTU