Thumbnail Lab
CTR-optimized thumbnail design system
High-CTR Thumbnail Formulas
Face + Text Overlay
8.4% CTRExpressive face, bold contrasting text, clean background
Before / After Split
7.9% CTRTwo-panel comparison, dramatic visual contrast
Number List Style
7.2% CTRLarge number, short hook text, minimal design
Curiosity Gap
6.8% CTRBlurred element or arrow pointing off-screen
Color Psychology
RedUrgency, attention, excitement
BlueTrust, authority, calm
YellowEnergy, optimism, curiosity
GreenGrowth, success, money
PurplePremium, creativity, wisdom
Thumbnail Checklist
Face shows clear emotion
Text is readable at 100px wide
High contrast between elements
Brand colors consistent
No more than 3–4 words of text
Arrow or visual pointer included
Optimization Score4/6 passed