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212K views · 4 days ago
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Frequently asked
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Your image, dropped into a real YouTube feed (home, search, and the up-next sidebar) at the exact sizes viewers see on desktop and mobile.
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1280×720 pixels, 16:9, under 2 MB, as JPG, PNG, or GIF. That's the exact spec the preview renders, so what you see is what you ship.
Why does my thumbnail look different on mobile?
Phones shrink and crop thumbnails harder than desktop, so faces and text that read on a monitor can vanish. Flip the device toggle to catch it early.
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