Product page A/B testing that keeps pages fast.
Test headlines, images, price presentation, and add‑to‑cart on any product page. Stellar is 5.4KB, cookieless by default, and measures revenue in GA4.
Product page testing without the usual tradeoffs.
Visual editor on live PDPs, GA4 revenue measurement, and a 5.4KB snippet designed to protect speed.
No‑code visual editor
Change copy, images, and buy‑box elements on live product pages.
5.4KB script
Async, CDN‑served tag that keeps Core Web Vitals intact on PDPs.
GA4 & revenue
Attribute add‑to‑cart, checkout steps, and purchases to variants.
Cookieless by default
Privacy‑conscious testing with simple install and targeting.
Create PDP variants without developer tickets.
Open the editor on your live product page, adjust titles, badges, images, and buy‑box UI, then launch with traffic allocation rules.
Target by template or URL
Roll a winning variant across SKUs with template or path targeting.
Custom JavaScript & CSS
Use custom code when your experiment needs deeper control.
Real‑time results. Native GA4.
Track PDP conversions the moment visitors arrive. Attribute add‑to‑cart, checkout steps, and purchase value to the variant each visitor saw.
Built for ecommerce product pages, not only landers.
PDP tests often run on reusable templates and focus on commerce goals. Use URL rules and device targeting to keep experiments scoped correctly.
Common first tests: gallery order, price presentation, sticky add‑to‑cart, reviews placement, shipping messaging, and mobile buy box.
The lightest A/B testing script in the market.
At just 5.4KB and served on a CDN, Stellar protects page speed and Core Web Vitals while you test product pages.
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.
Frequently Asked Questions
Ready to test your product pages?
Free sandbox. Install one snippet and launch your first PDP test in minutes.