A/B Test YouTube Thumbnails Automatically
Rotate thumbnail variants on your videos, track real CTR data from YouTube Analytics, and let the winner take over — hands-free.
Start Optimizing — $13/moCancel anytime. No contracts.
Auto-Rotation
Cycles thumbnails at optimal intervals
CTR Tracking
Real data from YouTube Data API
Auto-Winner
Sets the best thumbnail automatically
Pro Plan
$13
per month
- ✓Connect unlimited YouTube channels
- ✓Up to 5 thumbnail variants per video
- ✓Automated rotation every 24–48 hrs
- ✓CTR analytics dashboard
- ✓Auto-set winning thumbnail
- ✓Email performance reports
Frequently Asked Questions
How does thumbnail rotation work?
After connecting your YouTube channel via OAuth, you upload multiple thumbnail variants for a video. ThumbnailAB automatically swaps them at set intervals using the YouTube Data API and records the CTR for each variant.
Do I need a YouTube API key?
No. We handle the YouTube Data API connection through our secure OAuth flow. Just authorize your channel and we take care of the rest.
What happens after the test ends?
Once enough data is collected, ThumbnailAB automatically sets the highest-CTR thumbnail as the permanent one and sends you a summary report.