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Why Choose ThumbnailTester?

Real Device Previews

Test thumbnails on 15+ device mockups including smartphones, tablets, and desktop views

Analytics Integration

Get CTR predictions based on historical YouTube performance data

A/B Testing

Compare multiple thumbnail versions side-by-side

How It Works

  1. Upload your thumbnail image (JPG/PNG)
  2. Choose device mockups for preview
  3. Analyze visibility at different screen sizes
  4. Download optimized versions

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