YouTube Thumbnail Analyzer
Measure technical readiness, contrast, complexity, safe-area pressure, and small-screen visibility without relying on AI or claiming to predict CTR.
Check technical and visual readiness
A practical readiness check, not a click forecast
The score combines resolution, aspect ratio, file size, luminance contrast, edge density, small-scale clarity, and outer-edge activity. Every recommendation is triggered by a measured threshold.
Use the previews to make your own creative judgment. Audience fit, topic, timing, and storytelling cannot be reduced to image pixels alone.
About thumbnail analysis
Does the analyzer predict YouTube CTR?
No. The readiness score summarizes measurable technical and visual properties. It does not predict clicks, views, or audience behavior.
Is AI required for the thumbnail analyzer?
No. The current analyzer uses deterministic browser-based image measurements and remains useful without an AI provider.
Is my uploaded thumbnail stored?
Not by the deterministic analyzer or with saved work. Only when you explicitly request AI creative feedback is a resized copy sent securely to the configured AI provider for that request.