Tools / Thumbnail Tester
YouTube Thumbnail Tester
Upload a thumbnail and a title — see how it looks in YouTube's actual interface.
Upload a thumbnail to see the previews.
Search / home page
Suggestions / sidebar
Mobile feed
What to look for
- Is the text still readable at small size — most views come from mobile.
- Does the sidebar's narrower crop cut off anything important in the composition.
- Does it stand out next to other cards — contrast matters more than detail.
The image is processed entirely in your browser and is never uploaded anywhere.
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