The Hero Spell
Conjure a hero section that converts on first scroll.
A training ground for CRO developers — dressed in witchcraft.
Hand-picked from the grimoire.
Conjure a hero section that converts on first scroll.
Watch the DOM. Strike when the node appears.
Split your audience. Speak to each segment in turn.
Every button, badge and card on this site carries a stable data-test attribute. The shop is intentionally testable — bring your A/B tool and start writing variants.
The Lab walks you through CRO development from your first selector to reading results. Each lesson points back to a real surface on this shop you can practise on.
Three lessons to begin with.
A practical introduction to the role of a CRO developer — what we build, why it differs from product engineering, and how experiments earn their keep.
Read lesson →Beginner · 8 minFrom hypothesis to readout: every test has the same skeleton. Learn it once and you can run them anywhere.
Read lesson →Beginner · 9 minHow the WTO snippet works, where it goes, and why placement matters for performance and flicker.
Read lesson →