YouThumb: YouTube Thumbnail Tester & Generator

Test thumbnails in the real YouTube feed and generate new ones. Preview, score, enhance and improve your CTR before you publish.

Whether you need to test a thumbnail you already made or generate a completely new design from scratch, YouThumb puts your video next to live competitors to see exactly what wins the click. 🚀 WHY YOUTHUMB WORKS • Competitor Comparison: See your thumbnail next to real competing videos. • Stand Out: Understand if your design actually catches the viewer's eye. • Optimize and Enhance: Fix weak spots and improve CTR before publishing. • Thumbnail Generator: Create new options instantly when yours isn't working. • Data-Driven Success: Make decisions based on live feed data, not guesswork. 📱 REAL YOUTUBE FEED PREVIEW • Test across Home, Search, and Watch Sidebar pages. • Perfect simulation for Mobile and Desktop layouts. • Check visibility in both Dark Mode and Light Mode. • Full control over your thumbnail's position in the feed. 🔍 CTR STRESS TESTS • Blur Test: Check for instant visual recognition. • Grayscale Test: Analyze contrast, clarity, and readability. • Mobile View: Ensure perfect small-screen performance. 📊 LIVE FEED SCAN & RANKING • Compare your video against 5 live competitors pulled straight from YouTube search. • Get a clear Feed Rank score to predict performance. • Receive actionable suggestions to improve your YouTube click-through rate. 🎨 THUMBNAIL STUDIO (NEW) • Generate brand-new thumbnails tailored to any YouTube search query. • Enhance your existing design — refine and perfect instead of starting from scratch. • Send Studio outputs straight into the Preview Tester to see them in the live feed. • Built on live Feed Scan signals, ensuring your generations target what is actually winning clicks today. 🆓 FREE TO USE & EASY TO START • No sign-up required for Thumbnail Previews and Stress Tests. • Get 50 FREE tokens upon sign-up for Feed Scans and Studio generation. • Seamless integration: Works directly inside the YouTube interface. • Privacy first: No YouTube channel connection or account linking required. Perfect for YouTube creators, video editors, marketers, and thumbnail designers who want to dominate the algorithm, get more clicks, and maximize their YouTube views. Test before publishing. Generate when you're stuck. Get the clicks your channel deserves. Install YouThumb today!