How to Make a YouTube Thumbnail That Gets the Click
The thumbnail is read at about 100 pixels wide on a phone. The design that works at full size is usually too busy at that size.
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Thumbnails
YouTube Thumbnail Size: The 2026 Spec and the Design Rules
The YouTube thumbnail is 1280 by 720 pixels, under 2 megabytes. The spec is easy; the design is where most uploads fail.
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