🎯 AI-Powered

Thumbnail Analyzer: Score Your CTR

Get an AI-powered click-through rate score for any YouTube thumbnail. Detects faces, text, colors, composition, and emotional hooks. Free 3/day, no signup.

✓Computer vision✓CTR prediction✓3 free / day

// Analyze Thumbnail...

✓ AI-powered✓ CTR score✓ Actionable insights

⚠ Score below 6.0: boost it now

Your thumbnail scored 4.2/10. Fix it with AI.

Below-average thumbnails kill watch hours. ThumbnailDev generates 6 high-CTR variants from your video idea: trained on millions of thumbnails that actually convert.

GENERATE 6 AI ALTERNATIVES →

YOUR THUMBNAIL

CTR 2.1%

→

AI-GENERATED

CTR 8.7%

WHAT WE CHECK

What the analyzer measures

😮

Face emotion

Detects expressions. Strong emotions (surprise, joy, anger) outperform neutral by 2-3x CTR.

🔤

Text readability

Font size, contrast, word count. Under 4 words is optimal for mobile thumbnails.

🎨

Color contrast

Distinct subject vs background. High contrast wins in YouTube's grid view.

📐

Composition

Rule of thirds, focal point clarity, mobile-safe area utilization.

🎯

Pattern interrupt

Does it stand out vs typical thumbnails in this niche?

📊

CTR prediction

Composite score 0-10 estimating relative click-through performance.

DAILY LIMIT

Analyze unlimited thumbnails?

Free account gets 100 analyses/month plus bulk channel-wide thumbnail scoring.

CREATE FREE ACCOUNT →

✓ 100/month✓ Channel-wide scoring✓ No card

FAQ

How does the thumbnail analyzer work?

A computer vision model analyzes faces, text, color contrast, composition, and pattern interrupts. We then produce a CTR potential score from 0-10 based on patterns from high-performing thumbnails.

What makes a good YouTube thumbnail?

High contrast, expressive faces (surprise/anger/joy outperform neutral), readable text under 4 words, distinct subject vs background, and a clear emotional hook that creates curiosity.

Is the CTR score accurate?

It's a relative score, not an absolute prediction. A 7/10 thumbnail likely outperforms a 4/10 in the same niche, but actual CTR depends on title, audience, and YouTube's algorithm.

Can I analyze a competitor's thumbnail?

Yes: paste any YouTube URL. This is a popular use case for studying what works in your niche.

Can I upload my own image instead of a URL?

Yes: drag & drop or upload a JPG/PNG. Great for analyzing thumbnails before publishing.

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