Free Thumbnail Analyzer
Upload your thumbnail. The AI reads composition, text, faces & colors — scores labelled as its estimate — and tells you what to fix.
Drop your thumbnail here
or click to upload · JPG, PNG, WebP · Max 4MB
What we analyze
Face + Expression
A clear, expressive face reads even at feed size
Bold Text
2-5 words, high contrast, readable at small sizes
Color Contrast
Bright colors against dark backgrounds stand out
Rule of Thirds
Place key elements at intersection points
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Frequently Asked Questions
What makes a good YouTube thumbnail?
Great thumbnails combine an expressive face, bold contrasting text (2-5 words), vibrant colors, and a clear focal point. They should be instantly readable at mobile sizes (320px wide) and create curiosity.
How does the thumbnail analyzer work?
Upload your thumbnail image (JPG, PNG, or WebP, max 4MB). The AI vision model reads composition, text readability, facial expressions, color usage, and overall click appeal, then gives an overall score labelled as its estimate, with specific fixes.
Is the thumbnail analyzer free?
Yes: one free analysis a day, with no account required. A free account adds 700 tokens a month.
What size should my thumbnail be?
YouTube recommends 1280x720 pixels (16:9 ratio). Many viewers see thumbnails much smaller on mobile, so the analyzer checks whether the text stays legible at feed size.
How important are thumbnails for views?
The thumbnail and the title are what people see before deciding to click, so they carry the click-through rate. The analyzer gives a second read before you publish; the real answer is your click-through rate afterwards, which is why YouTube's own thumbnail test compares results rather than opinions.