A/B Test Your YouTube Thumbnails — Automatically
Stop guessing which thumbnail wins. ThumbnailAB rotates your variants on a schedule and tracks CTR, views, and engagement so you always publish the best one.
Start for $11/moCancel anytime. No contracts.
Pro Plan
$11/mo
Everything you need to grow faster
- ✓Unlimited A/B thumbnail tests
- ✓Automated rotation schedules
- ✓Real-time CTR & view analytics
- ✓YouTube Data API integration
- ✓Email alerts on winner detection
- ✓Up to 50 videos tracked
Frequently Asked Questions
How does thumbnail rotation work?
ThumbnailAB connects to your YouTube channel via the YouTube Data API. You upload 2–4 thumbnail variants per video, set a rotation interval (e.g. every 48 hours), and we automatically swap them while recording performance data for each variant.
What metrics are tracked?
We pull Click-Through Rate (CTR), impressions, views, average view duration, and likes for each thumbnail variant directly from YouTube Analytics. The dashboard shows a clear side-by-side comparison so you can pick the winner with confidence.
Will this violate YouTube's Terms of Service?
No. ThumbnailAB uses the official YouTube Data API v3 with OAuth 2.0 authorization. Changing thumbnails is a standard, permitted API operation — the same thing you do manually in YouTube Studio, just automated.