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404 / Error Page Optimizer

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A/B test error page designs — messaging, recovery paths, search boxes, and popular links — to maximize recovery rate (user navigates to valid page vs bounces).

Primary Metric

Recovery Rate

↑ Higher is better

Experiment Settings

Variants per round: 3

Max rounds: 6

Min sample size: 500

Guard Rails

Experiments auto-pause if these thresholds are breached

Minimum 10% recovery rateFloor: 10.0%

Start Experiment →