Judged against outliers
The 11 thumbnails beside yours are real top outliers, the highest-multiplier videos in our dataset. If yours pulls the eye here, it can compete anywhere.
Thumbnail testing/tools/thumbnail-preview
Preview your thumbnail against real YouTube outliers
Drop in your thumbnail and see it in the 2nd slot of a pixel-faithful YouTube feed, next to 11 real top outliers, so you judge your packaging against proven winners before you publish.
Free plan · Included free, no credit card required.
Test before you publish
Drag, click, or paste a PNG, JPG, or WebP and see it in the feed instantly, spot a weak thumbnail while you can still change it.
Every surface and theme
Preview yours on the home grid, search results, watch-page sidebar, and mobile, each in YouTube's real light and dark themes.
How it works
Three steps, start to finish
- 01
Drop it in
Drag your thumbnail in, click to browse, or paste it straight from your clipboard, PNG, JPG, or WebP all work.
- 02
Set the packaging
Type in your video title and channel name so the mock reads exactly like a real YouTube card.
- 03
Compare and judge
See yours in the 2nd slot beside 11 real outliers across home, search, sidebar, and mobile, then fix what looks weak.
Questions
Where do the competing thumbnails come from?
They're the highest-multiplier longform outliers in vidfora's dataset, videos that genuinely beat their own channel's median, not just high-view uploads. You're stress-testing your packaging against proven winners.
How do I add my thumbnail, and what formats work?
Drag and drop it, click to browse, or paste an image straight from your clipboard. PNG, JPG, and WebP are all supported.
Which YouTube layouts and themes can I preview?
Home feed, search results, the watch-page sidebar, and mobile, each rendered in YouTube's real light and dark themes.
Explore next
Start
Find your next video in the data.
Join creators using vidfora to research outliers and package videos that win the click.
No credit card required