YouTube Thumbnail Tester Features
Stop guessing. Preview and test your YouTube thumbnails through the eyes of your viewers before you hit publish.
Powerful Thumbnail Preview & Testing Tools
Everything you need to test, preview, and optimize YouTube thumbnails that drive clicks and boost your CTR.
Real-Time Feed Preview
Simulate your thumbnail in the Home Feed, Search Results, and Suggested Sidebar. See exactly how your design appears to viewers before publishing.
Visual Accessibility Lab
Toggles for Blur (focus check), Grayscale (contrast check), Border (framing check), Mobile View (size check), and Dark/Light mode testing. Ensure your thumbnail works in all viewing conditions.
Competitor Scan
Rank and compare your design against top-performing videos in any niche. Learn what works and optimize your thumbnails accordingly.
Package Test
Test how your title and thumbnail work together as a single "click-package". See the full viewer experience before publishing.
AI A/B Simulator
Compare 3 different designs to find the one with the highest "Curiosity Gap". Data-driven decisions for maximum CTR.
Ready to Test Your YouTube Thumbnails?
Start previewing and testing your YouTube thumbnails today and boost your CTR
Install from store for free