🖼️

Video Thumbnail Tester

videoapi-pushweekly cycle

A/B test video thumbnails — face close-ups, text overlays, curiosity gaps, bright colors — to maximize impression-to-click CTR on YouTube.

Primary Metric

Impression CTR

↑ Higher is better

Experiment Settings

Variants per round: 3

Max rounds: 6

Min sample size: 2,000

Guard Rails

Experiments auto-pause if these thresholds are breached

Minimum 2% impression CTRFloor: 2.0%