YouThumb Tester

Preview and test your thumbnails and titles directly on the YouTube homepage to maximize your CTR before you hit publish.

The Ultimate YouTube Thumbnail Tester & Preview Tool Test your design in the wild. See your thumbnail like a viewer before you hit publish. Stop guessing if your thumbnail works. A "good" design in your editor often fails in the crowded YouTube feed. This suite allows you to simulate the real viewer experience, giving you the power to test and compare your visuals against the top-performing videos in your niche. ✅ Comprehensive Thumbnail Testing Suite Preview and validate your designs across every critical YouTube touchpoint: Home Feed Tester: See how your thumbnail stands out (or blends in) against the algorithm’s top recommendations. Search Results Preview: Test your thumbnail directly next to competitors to ensure you own the search page. Suggested Sidebar Test: Ensure your focal point and text remain crystal clear even at the smallest sidebar scales. Dark & Light Mode Toggle: Test visibility across both YouTube themes to ensure your colors pop in any environment. 🔥 NEW: PRO Features for Maximum Growth A/B Testing Simulator: Don't flip a coin. Upload two designs and let our AI compare them head-to-head. Get a data-backed verdict on which version has a higher "Curiosity Gap" and better click potential. Live Feed Scan: Our most advanced tool yet. Upload your thumbnail and "scan" it against a live grid of real-time trending videos. See exactly where the eye goes first (Saliency Map) and if you can beat the current competition. 🤖 AI-Driven Thumbnail Analysis Our thumbnail test engine doesn't just show you the image—it analyzes it for maximum impact. Visual Clarity Scan: Instantly flags "mushy" textures or low-contrast text that ruins thumbnail performance. Psychology-Based Scoring: Get a "Click-Ability" score based on proven visual triggers used by top creators. Iterative Feedback: Receive direct, simple suggestions to improve your thumbnail test results in seconds. 🎯 Why Creators Use This Thumbnail Tester Successful creators know that thumbnail testing is the most important part of the upload process. Mobile vs. Desktop: View how your design scales across different devices. Overlay Protection: Never let the "Time Overlay" block your most important text or face again. Competitive Edge: Use the preview tool to ensure your design is more vibrant and clickable than the videos surrounding it. Test your thumbnails. Optimize your design. Earn the click.