UX, Conversion & Accessibility

Split URL Testing

Split URL testing is an experiment that sends comparable visitor groups to different URLs or page versions to measure how a change affects outcomes.

Split URL testing is often used when two page variants differ enough that maintaining them at separate addresses is practical. Traffic is randomly assigned to a control or alternative, and the team compares a primary conversion measure over an appropriate test period. The method resembles A/B testing; the distinguishing feature is that a URL-level routing setup serves the variants.

Experiment design must account for audience balance, repeat-visitor consistency, analytics attribution and search-engine access. A test can be misleading if visitors switch variants on return visits, if one version is shown only on slower devices, or if conversion events are missing from one page. When experiments involve duplicate pages, canonical and redirect handling should be reviewed to avoid unintended long-lived duplicate URLs.

A win is not simply the variant with the most clicks in a small early sample. The team should define success beforehand and consider revenue quality, mobile usability and accessibility. Split URL testing is a delivery pattern for controlled experiments, not a guarantee of greater statistical rigor than ordinary A/B testing.