Does your thumbnail earn the click?
Upload a thumbnail — PNG, JPG, or WEBP — and get an instant six-dimension CTR score plus concrete suggestions. Runs entirely in your browser.
CONTRAST · BRIGHTNESS · SATURATION · WARM PALETTE · ASPECT · HUE
All analysis runs in your browser — no uploads leave your device.
HOW IT WORKS
Six dimensions. One private analysis.
Six-dimension score
Contrast, brightness, saturation, warm palette, aspect ratio, and dominant hue — each scored individually so you know which lever to pull.
Actionable suggestions
Every low score comes with a concrete suggestion — deepen shadows, add warm accents, hit 1280×720. Not just a verdict.
Your image stays local
Analysis runs 100% in your browser via canvas APIs. Nothing is uploaded to our servers — drafts stay private.
SCORING IS HALF THE JOB
A score tells you it's weak.
Thumbnail Concepts tells you the fix.
Inside VANTAGEVID, the Thumbnail Concepts module generates 3 new thumbnail directions tuned to your topic — with exact composition, copy, colour, and face / subject prescriptions. It's a creative partner, not a critic.
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Frequently asked
How does this predict CTR without real data?
It doesn't — it estimates. The score is a heuristic weighted composite of six visual factors that correlate with CTR in published research: contrast, brightness, saturation, warm palette share, proper aspect, and dominant hue. It flags which levers are weak. Real CTR comes from A/B testing.
Why is warm palette weighted so heavily?
Statistically, red / orange / yellow out-click cool palettes on YouTube's suggested feed. It's not the only factor — but if you've got a dominant blue or green thumbnail and your CTR is below 5%, this is the first thing to change.
Doesn't size / resolution just matter for YouTube accepting the upload?
Partly — YouTube requires 1280×720 minimum for monetization. But the bigger reason is that lower-resolution thumbnails get up-scaled by YouTube's player, which softens text and weakens the hook at small feed sizes.
Is this a replacement for Thumbnail Concepts?
No — this scores a thumbnail you already made. VANTAGEVID's Thumbnail Concepts generates 3 brand-new directions for your topic, with exact composition, copy, and colour prescriptions. Different tool, different job.