Test thumbnail contrast, color balance, readability, and YouTube timestamp badge overlap before publishing.
Try 1-click sample thumbnails or upload your own to test real CTR metrics
Click to upload your 16:9 thumbnail
Supports PNG, JPG, and WEBP (1280x720 recommended)
Predicted browse feed pop
How viewers see your video
TechCreator•142K views•2 days ago
Inspect an uploaded thumbnail in desktop and mobile feed mockups. Check contrast, color, brightness, dimensions, and possible timestamp overlap, with grayscale and composition overlays to help your review.
Fast and easy from start to finish
Select a thumbnail or a sample image.
Inspect the score, measurements, and suggested improvements.
Switch preview modes and overlays, then revise the image in an editor if needed.
What you can do with this tool
Image measurements: Estimate contrast, saturation, brightness, and proportions.
Feed previews: Try desktop and mobile views with a sample title and channel.
Visual overlays: Show the timestamp region or rule-of-thirds guide.
Grayscale check: Inspect the image without color.
File requirements, capabilities, and system limits
The tool reviews rather than edits the thumbnail. Automated recommendations are visual estimates.
Answers to common questions about YouTube Thumbnail Analyzer
No. It is a heuristic based on image properties. The workspace does not access YouTube analytics or predict a verified click-through rate.
No. Pixel-based measurements cannot reliably identify semantic importance. Inspect the subject, lettering, and timestamp area yourself.
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